Frequently Asked Questions (FAQ)
Do you have a question about the Dlubal programs? The FAQ page provides answers to frequently asked questions and commonly encountered problems. The solution is only a few clicks away! No need to wait with immediate access to hundreds of FAQ. The category filters and keyword search help you to quickly find the relevant question and answer.
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Option – Independent FE Mesh Preferred
What is the effect of the "Independent FE Mesh Ppreferred" option in the mesh settings?
Plastic Hinges
How do I define a plastic hinge in RFEM 6?
Importing Surfaces from Rhino into RFEM 6
Why are not all surfaces transferred when importing surfaces from Rhino into RFEM 6?
Interface RFEM 6 / RSTAB 9 – IDEA StatiCa
How can I exchange data between RFEM 6 / RSTAB 9 and IDEA StatiCa?
Inactive Object Intensity
How can I adjust the brightness of inactive objects?
Advantages of CFD Simulation
What are the advantages of CFD simulation compared to conventional experimental tests?
Add-ons for Concrete Structures
Which products do you recommend for the structural analysis and design of reinforced concrete structures?
Add-ons for Steel Structures
I process steel structures. Which products do you recommend for this area?
Direct vs. Iterative Solver
The calculation in RFEM 6 takes a very long time, but the processor utilization of my system is low. Why is this?
State of Development of Beam Panel
What is the current state of development of the "beam panel" element for modeling timber frame walls?
Not Valid/Deactivated Punching Nodes
In the table of the objects to be designed in the Concrete Design add-on, punching nodes are listed in the not valid/deactivated column, although I have defined them as punching nodes. How can I fix this?
Area Loads on Members via Cells
How can I generate an area load on members via cells in RFEM 6 or RSTAB 9?
Changing Mia's Shortcut
The keyboard shortcut of the AI assistant Mia conflicts with another shortcut that I use in the system. How can I change the Mia shortcut?
Setting of I-Beam Flange Support for Design in Structure Stability Add-on
In the Steel Design add-on, I have set the boundary conditions in such a way that the I-beam flange is restrained against the horizontal displacement. I then calculated the critical load factors using the Structure Stability add-on, but with no effect on the critical load factor value. What is the reason for this?
Download Student Version
I have installed a trial version of RFEM 6 on my computer and now I want to use the student version. Where can I download the student license?
Remote Desktop and OpenGL
I would like to access another computer via Remote Desktop and run RFEM 6 there. However, RFEM crashes directly after the registration. How can I solve this problem?
Inactive Objects in Visibilities
How can I only display objects that are selected as a "visibility"? The inactive objects are displayed transparently. However, I want to hide them completely.
Graphic Templates for Printing Reinforcement Layout
How can I use graphic templates for multi printing of a reinforcement?
Load Transfer Surfaces
The loads from the load transfer surfaces are not displayed. Where are they?
Saving Toolbars
I have customized my toolbars. How can I save these settings to use them on another computer?
Design Cases
Can I use design cases in RFEM 6 in the same way as in RFEM 5?
Where can I find my customer number in RFEM or RSTAB?
Where can I find my customer number in RFEM or RSTAB?
Error Message when Accessing Template in Revit or Rhino/Grasshopper
I use a template for the data exchange with Revit or Rhino/Grasshopper, and get an error message.
3D View Home Button
Is there a way to reset the 3D view to the original perspective if I have adjusted it using the 3D cube?
Activating Steel Fiber Concrete Design in "Concrete Design" Add-on
How can I activate the design with steel fiber-reinforced concrete in the "Concrete Design" add-on for RFEM 6?
How can I define temporary supports for a form-finding process in RFEM& 6?
How can I define temporary supports for a form-finding process in RFEM& 6?
Imperfection Case
There is no "Imperfection" action category. How can I create an imperfection load case?
Design properties
Where can I specify various properties for the design (for example, effective lengths)?
Unit Stresses
Can I estimate which minimum cross-sections I should use before starting to design my model?
User-Defined Material
How can I create and edit a user-defined material from an existing material?
Member Nonlinearity
Is it possible to define member nonlinearities for beam members?
For example, can I define a member that absorbs all internal forces, except for the compressive axial forces?
Pipe as Shear Key in RF-/JOINTS Steel – Column Base Add-on Module
How do I define a pipe as a shear key in RF‑/JOINTS Steel – Column Base add-on module?
Are the solids with a common surface automatically connected rigidly to each other?
Are the solids with a common surface automatically connected rigidly to each other?
Exporting Parametric Cross-Sections from Grasshopper
I get an error when entering the name of a parametric section (for example, R_M1 500/1000) in Grasshopper.
When exporting from Rhino 8, no data are transferred to RFEM 6.
When exporting from Rhino 8, no data are transferred to RFEM 6.
Is it possible to avoid the login when starting the programs RFEM 6 and RSTAB 9?
Is it possible to avoid the login when starting the programs RFEM 6 and RSTAB 9?
RWIND Calculation Error E315
When performing high-quality transient simulations with a high number of mesh cells, I get this error: "Calculation failed! RWindSolverTransient failed, E315." After that, RWIND stops without results. What can I do?
Incorrect Material or Cross-Section Conversion in Revit or Tekla
I get an incorrect conversion in Tekla/Revit when using regular expressions in the conversion table.
Steady-State or Transient Simulation for Parapet in RWIND
What is the most accurate CFD method for the wind simulation of parapets?
Effective Section
Can I calculate the effective section properties of a cross-section using RSECTION?
- 005450
- RFEM 6
- RSTAB 9
-
- Steel Design for RFEM 6
- Steel Design for RSTAB 9
- Aluminum Design for RFEM 6
- Aluminum Design for RSTAB 9
- Form-Finding for RFEM 6
- Steel Structures
- Aluminum and Lightweight Structures
- Temporary Structures
- Tensile Membrane Structures
- Structural Analysis & Design
- Form-Finding and Cutting Patterns
- Dynamic and Seismic Analysis
- Eurocode 3
- Eurocode 9
- ANSI/AISC 360
- ADM
Temporary Structures
I would like to analyze temporary structures. Which programs do you recommend?
Viewer Mode
I would like to send my model to a partner. How can I use the program as a "viewer" to view the model?
Power Plants and Conveyor Structures
Which programs can I use to design power plants and conveyor structures?
Scaffolding and Rack Structures
We are looking for a program for scaffolding and rack structures. Is Dlubal Software suitable for this?
Tensile Membrane Structures
Which Dlubal programs do I need for tensile membrane structures?
Aluminum and Lightweight Structures
I would like to design an aluminum structure. Is it possible to use RFEM or RSTAB for this?
Cable and Tensile Structures
I would like to analyze cable and tensile structures. Is it possible to use RFEM or RSTAB for this?
Programs for Laminate and CLT Structures
Which programs do I need for laminate and sandwich structures, or cross-laminated timber (CLT)?
Programs for Timber Structures
Which Dlubal Software programs can I use to calculate and design timber structures?
Fast Support via Mia Chatbot
Where can I find the support chat for quick assistance on the Dlubal website?
Design of Hydraulic Steel Structures
Can I analyze and design hydraulic steel structures with the Dlubal programs?
- 005437
- RFEM 6
- RSTAB 9
-
- Steel Design for RFEM 6
- Steel Design for RSTAB 9
- Steel Joints for RFEM 6
- Torsional Warping (7 DOF) for RFEM 6
- Torsional Warping (7 DOF) for RSTAB 9
- Steel Structures
- Structural Analysis & Design
- Stress Analysis
- Stability Analysis
- Warping Torsion Analysis
- Steel Connections
- Cold-Formed Sections
- Eurocode 3
- ANSI/AISC 360
- CSA S16
- IS 800
- GB 50017
- SP 63.13330
- BS 5950-1
- AS 4100
- SIA 263
Programs for Steel Structures
Which programs and add-ons are suitable for the structural analysis and design of steel structures?
Programs for Concrete Structures
Which programs and add-ons are suitable for concrete structures?
Member Internal Forces – Units of Strain – RFEM 6
What does the unit symbol for axial and shear strain represent in RFEM 6?
Surface Result Points
How can I set user-defined points for result values on surfaces in RFEM 6?
The applied free additional reinforcement is not considered in the punching shear design.
The applied free additional reinforcement (free rectangle, free circular, or free polygon) is not considered in the punching shear design or calculation.
Isotropic Load Transfer Surface
How does the "Isotropic-FEA" load transfer surface work?
Dlubal Material and Section Names for Conversion in Revit, Tekla, Grasshopper
Where can I find the complete Dlubal material and section denotation? I need it for the conversion when exchanging data with other programs.
AISC 341 Limit State Types
Which Limit State Types are applicable for the AISC 341 seismic design?
Colored Scale of Tables and Report
Is it possible to hide the color scale in blue/red in tables and in a printout report?
Numbering of Nodes with Supports
How can I quickly isolate the nodes that are used as nodal supports in order to display their numbers?
Area Load on Open Structures
How can I apply area loads to an open structure in RFEM 6?
Data Exchange Between RFEM 5 / RSTAB 8 and Tekla Structures 2023
How can I exchange data between RFEM 5 / RSTAB 8 and Tekla Structures 2023?
Virus Warning
I get a warning that a file created with RFEM, RSTAB, or RSECTION contains a virus or a Trojan horse. What should I do?
Cloud Calculation - SSL Handshake Failed
When trying to start a cloud calculation, I get the error message SSL handshake failed. What should I do?
Excluding COs from Design
How do I exclude specific load combinations (COs) in the design add-on?
CSA S16 Class 4 Sections
Can I design members with Class 4 sections according to CSA S16 in the Steel Design add-on?
Is it possible to display the wind simulation results, calculated in RWIND, in RFEM?
Is it possible to display the results, calculated in RWIND, in RFEM?
How can I create a model template in RFEM 6?
How can I create a model template in RFEM 6?
How can I enable model add-ons when using WebService?
How can I enable model add-ons when using WebService?
How can I create a new model with add-ons enabled?
How can I model a corrugated web beam in RFEM 6?
How can I model a corrugated web beam in RFEM 6?
How can I use a template when exporting data from Rhino Grasshopper to RFEM 6?
How can I use a template when exporting data from Rhino Grasshopper to RFEM 6?
How can I create a new model with add-ons enabled?
How can I create a contact solid between two surfaces in RFEM?
How can I create a contact solid between two surfaces in RFEM?
How can I connect surfaces to other surfaces or members in a hinged/semi-rigid way in RFEM 6?
How can I connect surfaces to other surfaces or members in a hinged/semi-rigid way?
What are Line Hinges and Line Releases?
Adding New Load Case to Automatically Generated Combination
I design pipelines using the RF-PIPING Design add-on module. I have created a new prestress load case and loaded the piping with longitudinal displacement.
Is it possible to add this new load case to combinations that are generated automatically?
Surface Reinforcement in Rib Design
How do I consider the surface (slab) reinforcement in my rib member (T-beam) design?
Equivalent Round Section Dimension
How is the dimension for an equivalent round section calculated in the Timber Design add-on?
Online Training
I have registered for an online training session. Do I need a dongle?
Automatic Generation of Zones
Is it possible to automatically generate zones in RWIND 2?
Member Hinge Graphical Assignment
How can a member hinge be assigned to members graphically in RFEM 6 / RSTAB 9?
Coupling or Rigid Member Result Display
How can I display the internal forces of a coupling member or rigid member in RFEM 6 / RSTAB 9?
Warning on Corrupted Database
When opening a model file, I get the warning message saying that "dangling pointers have been fixed." What does this message mean?
Using Load Wizard "Import Support Reactions"
How do I use the "Import Support Reactions" load wizard?
Precamber
I have entered the Precamber load type into my model, but it doesn't seem to work. The results show no deformation.
Section Moduli About Axes y, z
How are the section moduli about the y- and z-axis calculated in RSECTION 1, SHAPE‑THIN, and SHAPE‑MASSIVE?
Blocks with JavaScript
How can I create and save a block using JavaScript?
Stability Analysis with Incrementally Increasing Loading
Can I incrementally increase the load in RFEM 6 or RSTAB 9?
Dlubal Software on Citrix Server
Is it possible to operate RFEM 6, RSTAB 9, and RSECTION 1 on a Citrix server?
PC Recognized as Virtual Machine
My Surface Book is recognized as a "Hyper V" virtual machine, so my local license does not work. What can I do?
Import RSECTION Cross-Section
How can I import my RSECTION cross-section into RFEM 6/RSTAB 9?
Bolt Holes in Thin-Walled Cross-Sections
How can I model bolt holes in thin-walled cross-sections?
Hardware and System Requirements
What are the minimum requirements for RFEM 6 and RSTAB 9?
Setting Deformations to 0
How can I set the deformations from an LC/CO or a construction stage to 0?
Connecting Elements
When are elements mutually connected in RSECTION 1? How can I connect the unconnected elements with each other?
Calculation Time in RFEM 6
How can I determine the calculation time in RFEM 6?
Instability when Using Building Model with "Rigid Diaphragm"
I have a 3D model and try to split it up into "walls" and "surfaces" with the Building Model and to calculate them separately. However, my structural system becomes unstable then. What can be the reason?
Curved Beam in RSTAB 9 with Block Manager
How can I enter a curved beam in RSTAB 9?
Drawing Vertical Line Support Results in XY Plane
For the result documentation, I would like to display the vertical line support results clearly in the top view. Which setting do I have to use for this?
Splice Connection
How do I create a splice connection in the Steel Joints add-on?
Question
How can I edit multiple models in one script using Python?
How can I use RFEM 6 / RSTAB 9 on an Apple Macintosh?
How can I use RFEM 6 / RSTAB 9 on an Apple Macintosh?
Graphics in Parallels Desktop
I am using RFEM 6 on an Apple Macintosh and I use Parallels Desktop for this. The axes are not displayed correctly in the graphics. How can I fix that?
Working Directory
Where can I find the working directory of RFEM 6, RSTAB 9, and RSECTION 1?
Moving Loads in RFEM 6 via Script
I would like to apply moving loads to members in my model, but I cannot find the RF‑MOVE add-on module. What can I do?
Standardized Sections for AISI Design
Which standardized sections are valid for AISI cold-formed steel design in RFEM 6?
Custom Sections for AISI Design
Can I design user-defined (parametric) sections according to AISI S100 or CSA S136?
AISI Table B4.1-1 Applicability Limits
Does RFEM check the applicability limits of AISI Table B4.1‑1?
Installation of Tekla Add-ins for RFEM 6
Is the Tekla add-in installed automatically in RFEM 6?
AISC 360-16 Shear Plane in Thread Option
Can I exclude bolt threads from the shear planes according to AISC 360-16 in the Steel Joints Add-on?
RFEM 6 / RSTAB 9 - IFC Export/Import
How can I export or import an IFC file in RFEM 6 / RSTAB 9?
Geotechnical Analysis and Load Cases
I want to consider the soil-structure interaction using one of the nonlinear soil material models. Why is it not reasonable to calculate the individual load cases with this model?
RFEM 6 / RSTAB 9 and Virtual Machines
Is RFEM 6 / RSTAB 9 able to run on a virtual machine?
Parametric Cross-Sections with Python
How can I create parametric cross-sections using Python?
Multilayer Composition with Python
How can I create a multilayer composition using the Python program?
Orthotropic Material with Python
How can I create an orthotropic material using the Python program?
Elastic Nodal Support with Python
How can I create an elastic nodal support using the Python program?
Reading out Nodal Deformation with Python
How can I read out the deformation at a certain node using the Python program?
Creating Nonlinear Line Hinge with Python
How can I create a nonlinear line hinge with the Python program?
User-Defined Parameters for Methods of Python High Level Library
I have to use custom parameters for the Python High Level Library methods for RFEM in my Python program. How can I determine the necessary parameters?
Where can I display or adjust the local axis systems in RFEM 6?
Where can I display or adjust the local axis systems in RFEM 6?
How can I define a scissor hinge in RFEM 6?
How can I define a scissor hinge in RFEM 6?
Using Feature "Transfer of Support Forces from Other Model"
How do I use the "Transfer of Support Forces from Other Model" feature?
Too Large Member Loads and Supports
The model loads, supports, and so on, are scaled extremely large even if I set the scaling to the minimum. How can I decrease the size?
ASD Strength Design in RFEM 6
How can I design my structure according to ASD strength design (such as AISC, ADM, NDS, and so on)?
Support Forces vs. Support Reactions
Why are the support reaction orientations shown graphically opposite of what I expect based on the table result output?
Definition of Rib Element in RFEM 6
How can I model a rib element in RFEM 6?
Hiding Surface Results via Gray Area
I want to hide my surface results for a certain range close to the zero value. How can I easily do this in RFEM 6?
Calculation Diagrams in RFEM 6 and RSTAB 9
How can I open calculation diagrams in RFEM 6 or RSTAB 9 after the calculation?
Selecting Dedicated GPU in Windows for RFEM 6 or RSTAB 9
How can I make sure RFEM 6 and RSTAB 9 are using the dedicated graphics card in my computer?
Sum of Drag Forces of Zones with ParaView and Excel
Is there an option to export the results of drag forces of all zones from RWIND in a table?
Optimize RFEM 6 and RSTAB 9 Models
What can I do to increase the performance when the model is very large?
Geo-Zone Tool – Cookies
The Geo-Zone Tool is not loading. What can I do?
Instability
My model is unstable. What could be the reason?
IFC Cross-Sections Not Converted Correctly
The cross-sections from my imported IFC file are not converted correctly.
Silent Installation RWIND
I am looking for a way to roll out RWIND using software deployment. Unfortunately, I cannot find an MSI file.
Importing Cross-Section from RSECTION 1
When importing a cross-section from RSECTION 1, I get an error message regarding the version. What can I do?
Automatic Load Combinations Not Generated
There are no automatic load combinations created. What can I do?
Unstable Model as of RFEM 5.27
My old model is suddenly unstable. What can be the reason?
Displaying Max/Min Information
The result of extreme values is not displayed. Where can I activate the max/min information?
Error 1327: Calculation Failed
I get Error 1327: Calculation failed. What can I do?
Error Message 7731 when Exporting RFEM Model to RWIND
When exporting my model from RFEM to RWIND, I get the message "Warning No. 7731 | Reading of logger file failed." What can I do to start the simulation in RWIND?
Line Supports | Stiffness via Fictitious Wall
I would like to determine and consider the stiffness of a line support using a fictitious wall. Why is this option grayed out?
RWIND 2 Basic vs. Pro
What is the difference between RWIND 2 Basic vs. Pro?
Load Transfer vs. Load Wizards
The load distribution on my members looks different when using the Load Transfer surface vs. the Load Wizards. What is the reason?
Different Nodal Mesh Refinement
How do the various options for the nodal mesh refinement differ?
Setting License
Where can I change my license?
Animation of Load Increase or Construction Process
How can I animate a load increase or a construction process?
How can I delete the connection to a project folder in the Dlubal Center?
How can I delete the connection to a project folder in the Dlubal Center?
Earthquake Data in Geo-Zone Tool According to DIN EN 1998
How does the Geo-zone tool determine the earthquake data according to DIN EN 1998‑1?
Surface Type Error
I received an error message “Surface of incompatible type... (Surface in upper plane of building story must be of ‘Load transfer’ type)” when running the calculation. What is the reason?
Exclude Lateral Torsional Buckling Check
My beam has a continuous lateral support and therefore lateral torsional buckling (LTB) is not a concern. How do I define the effective length?
Opening Printout Report in Another PDF Reader
Can I open the printout report in another PDF reader?
Line Hinges on Several Surfaces
How can I efficiently define line hinges on several surfaces?
Orthotropy Direction for Layers
Why cannot I define a rotation when defining layers?
Displaying / Adjusting Other Settings of Printout Report
Is it possible to adjust the layout (for example, the header) in the printout report in RFEM 6 / RSTAB 9?
AutoCAD Import into RFEM 6 with Cross Section and Material
How can I import my AutoCAD model into RFEM 6 and have the cross section and material information transfer over?
RFEM and RSTAB Not Starting with 3D Mouse
RFEM and RSTAB crash at the moment of starting the program. I work with a 3D mouse. Where is the problem?
Effects of Precision Setting
What effects does the precision setting have on the model?
Generated Seismic Load Combinations
My ASCE 7 generated seismic load combinations combine the X and Y directions in the same CO. How do I change this to independent directions only?
Overstrength Factors
How do I include the overstrength factor(s) Ωo in the ASCE 7 load combinations?
Exact Cross-Section Search
When using the search function of the cross-section library, a lot of similar cross-section series are displayed. How can I limit the search results to the exact cross-section description?
Creating User-Defined Fabric
How do I create a user-defined fabric?
ASCE 7 Reduced Live Load Factor
My live load is less than or equal to 100 psf. How do I consider the reduced load factor in the ASCE 7 load combinations?
Redundancy Factors
How do I include the redundancy factor(s) ρ in the ASCE 7 load combinations?
Activating and Deactivating "Drag and Drop"
How can I activate or deactivate the "Drag and Drop" function?
Auto Connect Lines/Members
When modeling, I use the "Auto connect lines/members" function. However, RFEM 6 always creates a connection node of the "on member" type. How do I proceed to automatically divide the members?
Limiting Value Scale to Positive Values
How can I limit the value scale in RFEM 6 and RSTAB 9 to only display the positive values?
ASCE 7 Seismic Load Combinations
I do not see the seismic load cases in my generated ASCE 7 load combinations (COs). How do I add them?
Cross-Section Parameter Modifications
How can I edit the parameters of an existing cross-section in the RFEM 6/RSTAB 9 library?
Load Increments and Nonlinear Materials
Is it possible to set load increments, save the results of each step, and view at which load increment the material is yielding?
Creating Response Spectrum ASCE 7-22
How can I create a response spectrum according to ASCE 7‑22?
Imperfection from Mode Shape
How do I create an imperfection based on a mode shape in RFEM 6?
Installation of Revit Add-in for RFEM 6
Is Revit Add-in installed automatically in RFEM 6?
Borrowing of Online Licenses
Is it possible to borrow an online license of RFEM 6/RSTAB 9 over an extended period of time?
Error Message Import Python
When trying to import an IFC File to RFEM, an error message appears. How can I solve the problem?
Result Diagram with Smooth Range in RFEM 6
How can I insert a smooth range / a smooth line in a result diagram of RFEM 6?
Nodal Supports with Nonlinearity "Partial Activity"
How can I create a nodal support with the "Partial Activity" nonlinearity via the COM interface?
Time Recording of License Sessions
I signed in with my Dlubal online license at 12:39 AM (Central European Summer Time). I would like to reserve the license for 24 hours. However, my account shows me that my session will end at 10:39 AM. What has caused this difference?
Wind Zone 2*
Where does the information about the port of Hamburg come from? How far do the boundaries of the port of Hamburg extend?
Strength of Weld-Affected Zone for Aluminum
How do I consider the strength of weld-affected zone for aluminum?
ASCE 7 Orthogonal Directional Combination Procedure
How do I apply the ASCE 7 Orthogonal Directional Combination procedure (100% + 30% rule) to my seismic load in a static analysis?
SLS Rotational Deformations of Crane Runway Girder
Is it possible in the CRANEWAY software to obtain the SLS rotational deformations of a continuous beam at the supports for an isostatic beam in the web plane?
Why does the eHORA map of Austria give different snow loads than your Geo-Zone tool?
Why does the eHORA map of Austria give different snow loads than your Geo-Zone tool?
Why does the load wizard "Member Load from Area Load" give unnecessary concentrated loads?
Why does the load wizard "Member Load from Area Load" give unnecessary concentrated loads?
MESA Software Renderer
I have display problems in RFEM 6, RSTAB 9, and RSECTION 1, or the program crashes immediately after starting it. What options do I have to improve this?
Font Size
How can I adjust font sizes in RFEM 6 and RSTAB 9 for a screen view and a printout report?
Various Wind Profiles by Wind Direction
How can I consider various wind profiles for various wind directions?
Welds in RFEM 6
In the case of stairs with a complicated geometry, it is often difficult to design welds by using the analytical methods. How can I do this with RFEM?
Weekly Release of New Versions
Why does Dlubal Software release new versions of RFEM 6, RSTAB 9, and RSECTION every week?
Printout Report Navigator
How can I show or hide the printout report navigator?
Importing Member Properties
How can I import properties of another member?
Case-Related Design with Different Load Situations
How can I carry out case-related design for different load situations?
Implausible Results – Torsional Warping
My results of the calculation with Torsional Warping are implausible. What could be the reason?
Displaying Purchased Products in Customer Account
Not all programs are displayed in our customer account on the website. I would also like to know where I can find the respective licenses.
How can I check the way RFEM 6 determines the required reinforcement?
How can I check the way RFEM 6 determines the required reinforcement?
Not Covered Reinforcement on Members | Concrete Design in RFEM 6 and RSTAB 9
Although all the member design checks have been fulfilled, I get the "Not Covered Reinforcement" result. What is the reason?
Installation: Error Message R6025
During the installation, I get error message R6025. What should I do?
Deleting Unassigned Loads
How can I delete all unassigned loads?
User-Defined Material
Can I also use a user-defined material in RF‑/PLATE‑BUCKLING?
Internal Forces by Cross-Section
How can I clearly print the internal forces in the printout report?
Change of Font Size for Design Formulas
Can I display the design formulas in the printout report in a slightly larger font?
Adjusting Lamellas for Glulam Sections in RFEM 6
How can I modify the lamella thickness for a glulam section in RFEM 6?
Opening RFEM 5 and RSTAB 8 Models in Previous Program Versions
Is it possible to open an RFEM 5 or RSTAB 8 file in a previous program version?
Display Properties as Template
How can I save my preferred settings as a template in the display properties?
Importing Support Reaction as Load
Is it possible to transfer "foundation loads" (support loads from hall columns, for example) to another RFEM model and combine them as new loads for the foundation slab?
Displaying MAX/MIN Info
The output of extreme values is not displayed. Where can I activate the MAX/MIN info?
Mode Shapes - Limiting Selection of Shapes
I need many mode shapes to achieve a sum of 90% effective modal mass. Can I limit the number of mode shapes for generating equivalent loads?
University License for RFEM 6 and RSTAB 9
What information is needed for a university license?
Calculating Selected Load Cases, Load Combinations, and Result Combinations
Can I calculate a selection of load cases, load combinations, and result combinations? In the case of complex models in particular, I do not always want to have all load cases calculated.
Displaying VEd in Surface Calculation
How can I display the result value for VEd in the results of a static analysis?
Block Manager
I downloaded RFEM 6, but I cannot find the "Generate Model - Members" option like we have in RFEM 5. Can you tell me where I can find this option?
Warping Release
How do I set a release for warping?
Online License Data Requirement
I am currently working abroad and sometimes I have to log in to the program using mobile data, which costs a lot. What is the data consumption of the RFEM operation?
Export/Import of Printout Report Templates
How can I import printout report templates from other computers?
Tangent to Circle
Is there an easy way to generate a tangent to a circle in RFEM 6?
Small Cohesion for Non-Cohesive Soils
What value can I use for cohesion in order to avoid singularities?
Uneven Terrain
The terrain surface of my soil to be analyzed is uneven. How can I edit the geometry of my soil massif for the modeling?
Activating Geotechnical Analysis Add-on
I have a license for the Geotechnical Analysis add-on and it appears as available to me. However, I cannot activate it. What could be the reason?
Warping Spring and Warping Restraint
How can I define a warping spring or a warping restraint?
Supports and Loads for Calculation with Warping Torsion
At which point on a cross-section are the supports and loads assumed for the calculation with warping torsion?
Rotated Surface Error
I would like to create a rotationally symmetric surface in RFEM 6. However, the rotated surface is not created. Why?
Backup File
Where can I find the backup file in RFEM 6?
Communication of RFEM 6 / RSTAB 9 / RSECTION 1 with Dlubal Extranet
When having RFEM 6 / RSTAB 9 / RSECTION 1 installed, does the application communicate or coexist with the systems/data? Do you store the data or do we receive the data from you?
RWIND 2 on MAC
Does RWIND 2 also work on a MAC?
Stress Ratio
The limit stress is activated, but my stress ratio is “non-designable” in the Stress-Strain Analysis add-on. What could be the reason?
Silent Installation
How can I distribute installations for RFEM 6 and RSTAB 9 via the network?
Deactivating 7th Degree of Freedom by Member
How can I deactivate the 7th degree of freedom for only certain members or cross-sections?
Cross-Section Warping
How can I display the cross-section warping?
Effective Lengths for Steel Stability Design
How do I define effective lengths when designing steel members in RFEM 6?
Construction Stages - Modifying Properties
Is it possible to change the properties of members or surfaces, such as their location, in the individual construction stages?
DXF Import Scale
I am trying to import a DXF file. The file can be imported into the model, but it does not have the correct scale. Where is the problem?
Generating Nodes at Intersections Without Dividing Lines in RFEM 6
Is there a way to generate nodes at intersections of lines without dividing the line in RFEM 6?
In RFEM 6, is it possible to display a graphic with the distribution of the required reinforcement in the DIN A0 format?
In RFEM 6, is it possible to display a graphic with the distribution of the required reinforcement in the DIN A0 format?
Member Design Supports for Deflection Checks
How do I define a member as a cantilever and not as supported at both ends for serviceability or deflection design?
Why are new COs generated during the calculation in RF‑/FOUNDATION Pro?
Why are new COs generated during the calculation in RF‑/FOUNDATION Pro?
Editing Script
I get an error message when trying to edit a script. What can I do?
Torispherical Head
How can I quickly create a torispherical head with RFEM 6?
Main Objects to Activate
Why is it not possible to create surfaces in my RFEM model?
Creating Block
How can I create and open blocks in RFEM 6 / RSTAB 9?
Scissor Hinge
When calculating a file with several scissor hinges, an instability message appears. What can be the cause?
Import RFEM 5 Printout Report Templates into RFEM 6
Can I import RFEM 5 printout reports into RFEM 6?
Influence of Analysis Methods
Does the analysis method selected in RSECTION affect the cross-section design in RFEM/RSTAB?
Unsymmetrical Cross-Section (UPE)
I am having trouble with the design of a steel structure. For a singly symmetric cross-section (UPE), the program cannot perform the stability analysis. It reports that the Equivalent Member Method 6.3.3 is not applicable for an unsymmetrical cross-section. Is it possible to design such cross-sections in the program?
Tapered Member in RFEM 6 and RSTAB 9
I would like to model a frame beam with a tapered cross-section. For this, I have created a member with the cross-section distribution "Tapered at member start". However, the resulting cross-section is displayed incorrectly in the rendering. What is the problem here?
Results of Punching | Concrete design in RFEM 6
Where can I find the graphical results of punching shear in the concrete design? Especially the distribution of shear forces at the critical perimeter or the punching loads.
Geographic Coordinates by Longitude and Latitude
In which format should I enter the geographic coordinates by longitude and latitude in the online service?
Importing DXF as Background Layer
How can I insert a DXF file as a background layer in RFEM 6 or RSTAB 9?
Aligning Line Supports to Local Axis System
I do not get any local support reactions on line supports in RFEM 6. What should I do to get them?
Reinforcement Description
Is it possible to display the reinforcement description in RFEM 6?
Export Excel Table
I would like to export nodal support forces of several load cases, load combinations and result combinations into an Excel spreadsheet in RFEM 6. How should I proceed?
RSECTION Analysis Method
What is the difference between the "Finite Element Analysis" and the "Thin-Walled Analysis"?
Backward Compatibility
Will it be possible to open an RFEM 6 project in RFEM 5?
Invalid Punching Node
I would like to perform punching design of a reinforced concrete slab. I have selected a node and set it for the punching design. The node is classified as invalid. Why?
Punching Shear Reinforcement
RFEM 6 reports that the punching shear resistance design of a slab without shear reinforcement is not fulfilled. Can the program design this reinforcement?
Visibility - Shortcuts
When activating Visibility in the Views navigator, I cannot see or use the shortcuts, although they are active. Why?
Hiding Types
Where can find the option to hide the defined types (for example, design supports or effective lengths)?
Deleting Blocks
Can I delete user-defined blocks in the Dlubal Center?
MS Office Repair
When exporting to Excel, I get the error message "Microsoft Excel is not installed on this computer" although Excel is installed. Why?
Modify Loading by Multiplier Factor
Is it possible to apply a factor to the loads of one or more load cases that uniformly increases or decreases all loads in these load cases?
Modifying Partial Safety Factors and Combination Coefficients
How can I adjust the partial safety factors and combination coefficients in RFEM 6 and RSTAB 9?
Load Wizard - Member Loads from Area Loads | Display Separately
When displayed separately in my model, the loads from the load wizard disappear. What am I doing wrong?
User-Defined Design Situation
How do I create a user-defined Design Situation with my own chosen load combinations?
What is the function of the Object Properties table?
What is the function of the Object Properties table?
How can I graphically deselect elements in RFEM 6?
How can I graphically deselect elements in RFEM 6? It seems that I can only select them. But not deselect.
Adapted Method (Enable Double Bending)
I cannot analyze a UPN cross-section subjected to double bending in the program. Is it possible to do this in the program?
Where can I activate the reduction of load combinations in RFEM 6? And how does this reduction work?
Where can I activate the reduction of load combinations in RFEM 6? And how does this reduction work?
Design of Member Sets
I have activated Steel Design in my model and defined design types for the members. Why can I not design the superordinate member set?
Crash Report
Right after starting the program, I get the error message "Assertion failed!" What can I do to solve this problem?
Weld
Is it possible to calculate the weld stresses between surfaces with RFEM 6?
Member Stiffness Modification
How can I modify the stiffnesses of particular members using a factor in RFEM 6 and RSTAB 9?
Instability
My model is unstable. What could be the reason?
Importing Coordinates
Is it possible to import the coordinates of another point?
Favorable Permanent Actions
Where can I activate the "Favorable permanent actions" option in RFEM 6 and RSTAB 9 in order to combine the self-weight in the ultimate limit state with 1.0?
Neglecting Torsion
How can I neglect torsion in the steel and timber design?
Automatic Reinforcement Design
Can the RFEM 6 Concrete Design add-on automatically design member and surface reinforcement?
Nominal Reinforcement Bar Size
Can I define a different bar size in the RFEM 6 Concrete Design add-on other than the default bar sizes available in the drop-down?
Internet Connection License
Can I use RFEM 6 and RSTAB 9 without an Internet connection?
Model Tolerances
How can a model be regenerated, or where can I adjust the model tolerances?
Shear Stiffness
How can I deactivate the consideration of shear stiffness for a cross-section calculation?
Colors for Compression and Tension
What is the reason for changing the colors for compression and tension in RFEM 6 and RSTAB 9 with respect to previous program versions? Since that time, compression has been red and tension has been blue.
Static Analysis Settings
Where can I find the calculation parameters to be set?
Parallel Calculations
When analyzing the combinations using the geometric linear method, it seems that the parallel calculation works. However, when I change the method to the second-order analysis, it seems that the solver calculates the combinations one by one.
Web Service and API
Do I have to rewrite my own tools created with RF‑COM, for example, to enter models in RFEM 6?
Unstable Model - Troubleshooting
My model in RFEM 6 / RSTAB 9 is unstable. How can I fix it?
User-Defined Additional Reinforcement
Why is it not possible to select the user-defined additional reinforcement for the serviceability limit state design in RF‑CONCRETE Surfaces?
User-Defined Additional Reinforcement in Partial Areas
Is it possible to define only the user-defined additional reinforcement in certain areas of a surface in RF‑CONCRETE Surfaces, while the rest is determined automatically?
Viewer Mode
Do you provide a free viewer where I can open the RFEM 6 or RSTAB 9 files?
National Annex DIN EN 1998-1/NA:2021-07
Is the German National Annex 2021‑07 to Eurocode 8 available in RFEM 5 / RSTAB 8?
Interface with MS Excel
Is the import from Microsoft Excel still available in RFEM 6?
Units and Decimal Places
How can I permanently save the parameters in the "Units and Decimal Places" dialog box?
Effective Width of Rib
How can I remove or reduce the effective width of a rib in RFEM 6?
Generation of Surface Imperfections
How can I generate imperfections on surfaces in RFEM 6 on the basis of the governing buckling mode?
Export of Response Spectrum
Can I export a response spectrum from RFEM 6 and use it in RFEM 5, for example?
Page Break in Printout Report
Is it possible to create page breaks manually in a printout report?
Global Calculation Parameters: Modify Stiffness
I have deactivated objects by load case. Why are they still considered in the calculation in the corresponding load case?
What is the maximum number of reinforcement groups that can be created in RF‑CONCRETE Surfaces?
What is the maximum number of reinforcement groups that can be created in a design case in RF‑CONCRETE Surfaces?
Elastic Surface Foundation with High Spring Constant
I would like to enter a large spring constant. Is this possible?
Line Hinge of Slab-Wall Connection
I would like to connect my masonry wall to a reinforced concrete slab. What is the best way to create a line hinge?
Question
How can I update the graphics card driver, and where do I find the current driver versions?
System Diagnostics RFEM 6 / RSTAB 9
How can I carry out system diagnostics in RFEM 6 or RSTAB 9 and send it to customer support?
Results on couplings
How can I display the internal forces of a coupling member or rigid member?
Punching
I would like to perform punching design of a floor slab. I have selected nodes for the design, but they are marked as invalid. Where did I make a mistake?
Extranet - Deactivating User
How can I set a user as inactive in the extranet?
Extranet - Adding Users
How can I create a new user in the extranet?
Extranet - Password Change
How can I change my password for the extranet?
Display Options for Results
Where can I find the display options for results?
In RFEM 5 and RSTAB 8, they could be found in the Display navigator.
FE Mesh Refinement
How can I define an FE mesh refinement in RFEM 6? In RFEM 5, this was available in the Data navigator.
Clipping Plane
Is it possible to create different section planes for the visualization of results?
Fatigue Design
Where is the fatigue design activated in the CRANEWAY program?
Analyse de déformation
Is it possible to display the deformation analysis of a surface (limit 0.5‰)?
Object Selection: Add and Remove
How can I select objects one after the other or add them to a selection? And how does the deselection or removal of the objects from the selection work?
Online Licenses for RFEM 6 and RSTAB 9
Are there only online licenses for RFEM 6 and RSTAB 9?
Opening Load
How can the openings of surfaces be subjected to a load?
Clipping Box
Is it possible to focus on a particular area of a model and hide the rest?
Wind Simulation Setting in RFEM 6 / RSTAB 9
Where can I adjust the settings of my wind simulation in RFEM 6 / RSTAB 9?
Neglecting Masses in RFEM 6 / RSTAB 9
How can I neglect masses in my modal analysis in RFEM 6 / RSTAB 9?
Normalization of Mode Shape
Where can I adjust the normalization of a mode shape in RFEM 6 / RSTAB 9?
Values on Surfaces in Surface Grid
I have activated values on surfaces in grid points, but only get the extreme values displayed. How can I display all values in all grid points as desired?
Column Failure Modal Analysis
How can I analyze the failure of an object, such as a column, in my modal analysis?
Values on Surfaces: Details
I have activated values on surfaces. How can I display only the extreme values, for example?
Load Transfer Surface RWIND
Is it possible to use load transfer surfaces in RFEM 6 for wind load generation using RWIND?
Is the deformation analysis in state II included in the concrete design in RFEM 6?
Is the deformation analysis in state II included in the concrete design in RFEM 6?
How can I open the interaction diagram from Concrete Design?
How can I open the interaction diagram from Concrete Design?
Why are the members not valid for the Concrete Design add-on?
Why are the members not valid for the Concrete Design add-on?
Creep and Shrinkage of Concrete
Where can I activate creep or shrinkage for concrete design?
Member Representative
What does a member representative mean?
Is it possible to design single-layer reinforced surfaces with RFEM 6?
Is it possible to design single-layer reinforced surfaces with RFEM 6?
Log4j Vulnerability
As a Dlubal customer, am I affected by the Log4j security gap?
Update Report, Bugs, Features
Where can I find the update reports, information about problem solving, and new features in RFEM 6 and RSTAB 9?
Webservice
After starting a web service or an interface from RFEM 6 / RSTAB 9, I get an error message. What can I do?
Handling Nonlinearities in RSTAB 9
How is the nonlinearity handled in RSTAB 9?
Generating Parts Lists
How can I generate parts lists in RFEM 6 and RSTAB 9?
Rigid Link
How can I implement a rigid coupling between two surfaces in RFEM 6?
Deactivating Objects by Load
How can I deactivate certain objects, such as members, surfaces, or supports, by load case?
Installation of Dlubal Plugin for Rhino and Grasshopper
Is the Dlubal plugin for Rhino or Grasshopper installed automatically?
Combinations for Road Bridges According to EN 1991-2 in RFEM 6
Does RFEM 6 include the combinations for road bridges according to EN 1991‑2?
Importing Layers as Visibility
Is it possible to import layers as a visibility?
Online License - Damage or Loss
What happens to the online license if a computer is broken or stolen?
Moving Authorization
We have purchased several online licenses. How can I move the authorization from one license to another?
Structure Stability
How do I perform stability analysis to determine the critical load factor in RFEM 6?
Authorization File
How do I get the current authorization file for RFEM 5, RSTAB 8, and other stand-alone programs?
Trial Expired
Unfortunately, the trial period of my trial version of RFEM 6 / RSTAB 9 has already expired. How can I continue to test new Dlubal products?
Creating Member End Release with Diagram via COM Interface
How can I create a member end release with a "diagram" using the COM interface?
Contact Between Surfaces
What is the fastest way to create a contact between two surfaces?
Assigning Loads to New Load Case
How can I assign existing loads to another load case?
Assignment of Free Loads
Why are the free line loads not displayed completely at certain locations after copying them, for example?
RFEM 6 License Type
How do I change the license type from "Demo" to "Trial" or "Purchased" in RFEM 6?
Cross-Section Optimization
How can I optimize cross-sections within the steel design?
Factorize / Optimize Provided Reinforcement
What is the meaning of the terms "Factorize provided reinforcement" and "Optimize provided reinforcement" in concrete design?
RWIND 2 with RFEM 5 / RSTAB 8
Can I also use RWIND 2 with RFEM 5/RSTAB 8?
Link to Main Program
I cannot create a new file. The menu item is grayed out. What can I do?
Modal Analysis - Minimum Initial Strain
Why do the results in a modal analysis differ between the initial prestress and the surface load?
Switching Between Results in Grid Points and Mesh Nodes
Can I switch the required reinforcement in the result tables from "mesh nodes" to "grid points"?
Line Releases and Line Hinges in RFEM 6
In RFEM 6, I am looking for the line releases known from RFEM 5. Are they no longer available in RFEM 6?
RFEM 6 90-Day Trial Access Concurrent use with RFEM 5 License
Can I download a 90-day trial version of RFEM 6 to test it out even if I own RFEM 5 now?
Nodal Support with Friction
Is it also possible to consider friction at nodal support in RFEM or RSTAB?
Overview of Add-ons
Is it possible to use the add-ons that are grayed out in the overview?
Compatibility Between RFEM 5 → RFEM 6 and RSTAB 8 → RSTAB 9
Can I open my old RFEM 5 models in RFEM 6 without problems and edit them further?
Constant on Elements
Where in RFEM 6 can I set that the stresses within the elements should be displayed constantly?
Surface Results Adjustment in RFEM 6
Where can I enter average regions or surface result adjustments in RFEM 6?
Printout Report Template
How can I create standardized printout reports in RFEM 6 and RSTAB 9 and use them as a template on other computers?
Login - SSL Handshake Failed
When trying to log in, I get an error message: SSL handshake failed. What should I do?
Opening RWIND in RFEM 6 or RSTAB 9
How can I open RWIND using the load wizard in RFEM and RSTAB?
Modal Analysis
How can I display mode shapes in RFEM 6 and RSTAB 9?
Response Spectrum Analysis
How can I perform an earthquake analysis in RFEM 6 and RSTAB 9?
- 005113
- Timber Design for RFEM 6
- Timber Design for RSTAB 9
-
- Aluminum Design for RFEM 6
- Aluminum Design for RSTAB 9
- Steel Design for RFEM 6
- Steel Design for RSTAB 9
- Stress-Strain Analysis for RFEM 6
- Stress-Strain Analysis for RSTAB 9
- Steel Joints for RFEM 6
- Timber Structures
- Concrete Structures
- Steel Structures
- Structural Analysis & Design
- Eurocode 2
- Eurocode 3
- Eurocode 5
- Eurocode 9
Materials of National Annexes
Where can I find the materials for the corresponding National Annexes in RFEM 6 and RSTAB 9?
Requesting and Using Student License
How can I request and use a student license?
Working with Templates
How can I speed up my work in RFEM 6 and RSTAB 9 when creating a new file?
SHAPE-THIN Cross-Section in RFEM 6 or RSTAB 9
Can I import a SHAPE‑THIN cross-section into RFEM 6 or RSTAB 9?
Multi-Core Capability
How many cores can RFEM 6 activate for the calculation?
RFEM / RSTAB Download Links on Dlubal Website
Where can I find the download links to the latest RFEM / RSTAB program versions?
Distance of Load to Object
How can I change the distance of a load to an object in the graphic?
Authorization File Download in New Dlubal Extranet
Where on the Dlubal extranet can I download my RFEM/RSTAB authorization file?
Preselection
What can I set using the preselection?
Adding Taper
How can I add a taper on a member?
Slider
How can I quickly change the size of some objects, such as supports and loads?
Undo Function
Is it possible to undo the work steps up to a certain step?
RFEM 5 Access after RFEM 6 Upgrade
Will I lose access to RFEM 5 when I upgrade to RFEM 6?
RFEM 5 and Add-On Module Upgrade Options
If I have multiple RFEM 5 licenses including multiple add-on modules, do I have to upgrade them all at the same time?
RFEM 6 Add-On Standards and Codes
If I upgrade an RFEM 5 design add-on module, which codes or standards will I have access to in RFEM 6?
RFEM 6 Upgrade Timeline
Do I have to upgrade to RFEM 6 right away?
RFEM 5 Continued Support
I want to continue using RFEM 5. Are you going to stop supporting this version now?
RFEM 6 Service Contract Options
Will RFEM 6 have a separate Service Contract than what I’m paying now for RFEM 5?
RFEM 6 Licensing Configurations
Will there be either a network or standalone licensing configuration for RFEM 6?
RFEM 6 Add-On Sharing Capability
Can add-ons be shared with the main RFEM 6 program like it is now with an RFEM 5 network license (for example, (2) seats of RFEM share (1) seat of RF‑TIMBER AWC)?
RFEM 6 First Release Features vs. RFEM 5 Features
Are all features that I'm using now in RFEM 5 available in the first release of RFEM 6?
RFEM 6 New Features
What new features are offered in RFEM 6?
RFEM 6 User Interface vs. RFEM 5
Does the RFEM 6 user interface look the same as RFEM 5?
RFEM 5 Model Integration in RFEM 6
Can I open RFEM 5 models in RFEM 6 without losing any data?
RFEM 6 90-Day Trial Version User Access
Can every user in my company download their own RFEM 6 90-day trial version?
Load on Non Coplanar Structures
How do I apply load on members that are non coplanar in RFEM 6?
Load Distribution
What options are available in RFEM 6 and RSTAB 9 to distribute the surface loads on members of a planar member structure as member loads?
Separated Display of Member Loads
I have applied surface loads to the surfaces with the "Load Transfer" stiffness type. How do I get to the separate display to see the corresponding member loads?
Upgrade to RFEM 6 / RSTAB 9 with RFEM 5 Service Contract
Can I upgrade to RFEM 6 or RSTAB 9 for free with my current RFEM 5 or RSTAB 8 service contract?
RFEM 6 Upgrade Costs
How much does it cost to upgrade to RFEM 6 if I own a current license of RFEM 5?
Null Member
Are there no more null members in RFEM 6 and RSTAB 9? How can I exclude a member from the calculation?
Member Division
Where can I set the number of member divisions, for example, for result diagrams?
Disabling Combination Wizard
Is it possible to disable the combination wizard manually when activating an add-on?
Selecting Results from Load Cases, Load Combinations, and Result Combinations for Printout Report
Where in the printout report manager can I select the results that are of interest to me, such as the internal forces and the support forces from the load cases, load combinations, and result combinations?
Design Results
I have activated the design within General Data under "Add-ons" and calculated everything. How do I get the results of my design?
Overview of Add-ons
How can I find out which add-ons I have and which only run as a demo version?
Integrating Projects
How can I integrate my customer projects into the Project Navigator via Dlubal Center?
Setting of Axis Systems
Where in the program can I set whether the global Z-axis and the local axes should be directed downwards or upwards?
Model Parameters Location
What happens if I enter a location in the model parameters in the Base Data of the model?
Language and Region
How can I change the language and region of the graphical user interface?
Directions of Load Distribution
I have a girder grid with members in the X- and Y-directions. After applying a load using the "Load Distribution" surface type, the members are only loaded in one direction.
How can I load all the members?
Line Hinge
How can I assign a line hinge to a surface?
Percentages in Control Panel
What is the meaning of the percentages next to the colors in the control panel?
Load Eccentricity
How can I consider an eccentric load introduction?
Design Add-ons
How do I open an add-on module for steel, timber, or concrete design (and others)?
Model Type 2D/3D
What does model type 2D/XZ/3D or 2D/XY/3D mean?
Licensing
When opening a new model, all the add-ons I have licensed are only available as a demo. How do I get my licensed full version?
Activating RFEM 6 and RSTAB 9
How can I activate my newly purchased programs on my computer?
Member Hinge Descriptions
How can I display more information about member end hinges in a graphic?
Crossing Releases
I have a model with crossing line releases/line hinges, and I obtain implausible results.
Viewer Link
I have deleted a link to the RFEM 5 viewer. How can I restore it?
Selecting Objects
Can I create a visibility from objects even though the function is grayed out?
Wind Load on Open Structures
How do I apply wind load on members of open structures in RFEM 5?
TOWER Loading
Is it also possible to use RF‑/TOWER Loading without the other TOWER add-on modules?
Checksum of Drag Force
What is the meaning of the difference in the checksum of drag forces?
Result Diagram Result Combination Min/Max
Is it possible to switch off the minimum internal forces when displaying a result diagram so that only the maximum values are displayed?
Form-Finding Integrated Lines
Although I modeled two identical systems, I got a different shape. Why?
Rotation of Nodal Support Using COM Interface
How can I rotate a nodal support using the COM interface?
Removing Cross-Section from Design
I do not want to design a cross-section in the RF‑/STEEL EC3 add-on module. Can I quickly remove this cross-section from the selection?
Crane Library
In CRANEWAY, there is a crane library with templates. Why is it grayed out?
Member Results in XY Plane
I would like to evaluate member results in the plan view. Is it possible to get the results drawn in the XY plane?
Column Running Through Wall
I have a roof structure resting on a steel column that runs to the foundations. The column runs through a perimeter wall that supports the false ceiling. A considerable part of the load from the roof is transferred to the wall. I want the steel column to carry all the vertical loads from the roof. How can I do it?
Info Day Online 2018
Are the models and presentations from Info Day 2018 freely available, and can you send them to me?
Sharing Violation in SHAPE-THIN
I encountered a sharing violation while importing a dxf file into SHAPE‑THIN. What is the issue?
Question
In RF‑CONCRETE Surfaces, I obtain a high amount of reinforcement in relation to a lever arm that is almost zero. How is such a small lever arm of internal forces created?
RF-STEEL Surfaces - Membrane Stresses
How can I display membrane stresses in the results of RF‑STEEL Surfaces?
Question
For the settlement calculation in the RF‑SOILIN add-on module, the specific weight gamma and gamma,sat are required for the soil. What do I need the value gamma,sat for, and how is it assumed in the calculation?
Question
RF‑/DYNAM Pro - Forced Vibrations and RF‑/DYNAM Pro - Equivalent Loads perform the multi-modal response spectrum analysis. What are the differences?
Question
Is it possible to edit a printout report without opening it?
Question
How does the "Orthotropic Plastic" material model work in RFEM?
Question
What is the meaning of the superposition according to the CQC rule in a dynamic analysis??
Question
We recently received the following error message on a laptop. Can you tell me what we can do to fix the problem?
Results for RF-/DYNAM Pro Add-on Modules
There are two different add-on modules for a response spectrum analysis in RF‑/DYNAM Pro. What can be the reasons for the different results of both add-on modules?
Question
How is the automatic creation of c/t-parts carried out?
Question
How can I display the internal forces in the global coordinate system and not in the principal coordinate system of the cross-section?
Question
What is the meaning of the action of masses in RF‑/DYNAM Pro - Natural Vibrations?
Question
When converting from the manual definition of reinforcement areas to the automatic arrangement of reinforcement according to Window 1.4, the result of the deformation calculation differs, although the basic reinforcement has not been modified. What is the reason for this change?
Question
I am designing a set of members using the equivalent member method in RF‑/STEEL EC3, but the calculation fails. The system is unstable, delivering the message "Non-designable - ER055) Zero value of the critical moment on the segment".What could be the reason?
Question
Is it possible to import the files of the FEM-Design program by the StruSoft company into RFEM?
Question
I would like to define a line support with ineffective tension and apply the tension force on this line using a nodal support instead. Why does the line support still receive a tension force?
Question
Our company has a new name that will be used by all company locations (national and international). I know that the address is stored in author.ini. However, it cannot be changed. We would prefer an empty author.ini so that we can adjust it individually depending on the location.
Modification of Model Type
Why are certain model generators only displayed as inactive/grayed?
Question
A single-span beam consisting of several apparently straight members receives small torsional moments in the load case of "dead load". Why?
Question
Does the program check the lap length of the vertical stirrups of a block foundation with smooth bucket sides?
Question
Why do I get a discontinuous area in the distribution of internal forces? In the area of the supported line, the shear force VEd shows a jump, which does not seem plausible.
Question
When creating a new member, the existing member is divided into two members, or when adding a node on a member, a new perpendicular member is created.
Is there any option to prevent the members from being divided automatically?
Question
In RFEM, is there a way to define a global polar grid whose origin lies, for example, in the global zero point and which applies to multiple surfaces?
Question
The tables (or the navigator) are not displayed despite activating the table window (or the navigator). How can I make them visible again?
Question
When comparing RF‑CONCRETE Columns with another design software, I get different results. How can the differences be explained?
Question
I have problems with my printout report. The font is very large. In some cases, the columns overlap and the font is no longer legible.
Question
How is it possible to make factorized combinations of a dead load in the context of form‑finding?
Question
Is it possible to perform design without an additional reinforcement in RF‑CONCRETE Surfaces?
Question
I want to create a mapped mesh for a circular hole plate. Is it possible to generate such a mesh in RFEM?
Interface to Halfen HDB 13.60
I have installed Halfen HDB 13.60 on my PC. The version does not seem to be compatible with RF‑PUNCH Pro anymore. The interface does not work. I am using version 5.26.02 of RFEM.
Question
Do you have a list of FAQs in Excel, for example, to give us with an overview of the existing FAQ?
Settings - Decimal Places
How can I adjust the number of decimal places in the standardized table values of a mode shape?
RFEM Workspace
What is the size of the workspace in RFEM?
Orthotropy Direction of Plate
I have a trapezoidal roof structure supported by beams. However, the moments on the beams are smaller than they should be. What could be the reason for this?
RWIND Simulation Result Export
Is it possible to export RWIND Simulation results into a GIS software or any other external program?
Detailed Information About Orthotropy
Where can I find detailed information about orthotropy mentioned in the manual?
Consideration of Heat Affected Zone for Aluminum
Is it possible to consider the reduction of strength in the heat affected zone (HAZ) in the RF‑/ALUMINUM add-on module?
Contact Stress in RF-SOILIN
When designing a foundation slab under a circular tank, the contact stress in the middle of the surface is not displayed. What could be the reason?
Question
The import of internal forces from RFEM or RSTAB to SHAPE‑THIN requires administrator rights. Is it possible to carry out the transfer without administrator rights?
Question
I have a model with a segmented curved layout of the line. How can I create a single line from it?
Question
I have imported a DXF file to RFEM. Unfortunately, the scaling of the model is not correct and has to be reduced. How can I change the scale?
Question
In a section through a surface, the result diagrams are not displayed in the entire area of the section. What is the reason?
Question
Is it possible to open files created with SHAPE‑THIN in the previous program versions, such as SHAPE‑THIN 7?
Question
The design criterion for VEd/VRd,c is displayed as governing, although there should be a shear reinforcement designed. Also, the design of VEd/VRds is missing. Why?
Question
Which calculation method is the basis for the stability analysis in RF‑CONCRETE Columns?
Question
I obtain lifting support forces, even though the loads act in the opposite directions. How is this possible?
Question
I have imported a SHAPE‑THIN cross-section into RFEM/RSTAB. How can I update the cross-section in RFEM/RSTAB if the cross-section has been changed in the SHAPE‑THIN program?
Question
Is it possible to enter a curtailed reinforcement in RF‑CONCRETE Columns?
Question
How many divisions must a member have for the calculation in RFEM in order to obtain accurate results?
Question
How can I display the results of the RF‑/DYNAM Pro add-on module in the printout report?
Question
Is it possible to lock graphics in the printout report?
Question
The design ratio of the cross-section check is different for the RF‑/STEEL and RF‑/STEEL EC3 add-on modules. What is the reason?
Question
When opening a file of the RF‑/PLATE‑BUCKLING add-on module, the input data are not transferred and the default values are preset. What is the reason?
Authorizing RWIND 2 Trial Version on Single-User Computer
How can I authorize the trial version of RWIND 2 on a single‑user computer?
Question
What is the meaning of the warning message ER061) Minimum amplifier of design loads <1?
Question
The display scale of the generated loads is not correct.How can I solve this problem?
Question
How can I optimize the calculation time in CRANEWAY?
Question
I would like to define lateral supports along the axis of a structural component that sometimes act on the upper flange, sometimes on the lower flange. However, it is only possible to select one item for each member. How can I create the entry?
Question
When using RFEM, there is a problem that the fonts applied in the work window are extremely small.
Question
How can I determine the controlling internal forces at a node that several members frame into for connection design?
RFEM 5, RSTAB 8, and SHAPE-THIN
What do I have to consider when installing and starting programs by Dlubal Software?
Question
Is it possible to divide a free surface load by the existing lines in RFEM?
Question
In which directions do the member types "Spring" and "Dashpot" have stiffness?
Question
I was checking the cross-section properties of rolled cross-sections in SHAPE‑THIN and found out that there are discrepancies with the tables when determining the torsional constant It. How can this be explained?
Question
Is it possible to adjust the symbol size in the toolbar in RFEM/RSTAB?
Question
How can I display a load-deformation diagram for any node of the structure?
User-Defined Sections
Where are the user-defined cross-sections saved? How can I access them?
Question
Could you please explain where I increase the calculated forces in the work window? They are so small that I cannot recognize them.
Question
Rayleigh damping is available in RF‑/DYNAM Pro. How do I determine and use these factors?
Question
After running the program as a full version and working with it for a certain period of time, an error message appears when saving the file, saying that the authorization failed. What is the reason, and how can I save my file anyway?
Question
Two solving methods for a linear time history analysis are available in the RF‑/DYNAM Pro add-on module. What is the difference between them?
Question
How can I apply a load to only a partial area of a rotationally symmetric structural component ?
Question
I am designing a cross-section created in the SHAPE‑THIN program using the design add-on module, but the program shows the error message "ER006 Invalid type of c/t-part for cross-section of type General". What can I do?
Question
What method is applied in the RF‑/DYNAM Pro - Equivalent Loads add-on module?
Question
Which type of file is used for RFEM and RSTAB?
Question
I obtain different results when comparing the deformation analysis in the RF‑CONCRETE add-on modules and another calculation program. What could be the reason for this?
Question
For the design, I can only select the surrounding reinforcement for a rectangular cross-section. Why?
Question
How can I change the exponential display of the results to the display of integral numbers?
Question
I get an error message saying that there is no material assigned to one or more point elements. How can I solve the problem?
Question
During the plausibility check, I get an error message saying that the surface opposite the contact surface cannot be located. How can I fix this?
Steel Fiber-Reinforced Concrete
What is the best way to consider steel fiber concrete in the structural analysis software RFEM 5?
Question
In RF-/STEEL EC3, I get an error message saying that the node with a support does not exist in the set of members. What is the reason?
Question
Can I use RFEM to calculate a log house three-dimensionally?
Question
In the global calculation parameters, the "Exceptional handling" option for members is grayed out and cannot be activated. What is the reason?
Opening RSTAB File with RFEM
Is it possible to open an RSTAB file in RFEM and vice versa?
Question
How can I deactivate displaying symbols for the FE mesh refinement?
Question
After an update of RSTAB, my .rst files, which had been used by another program, are always opened with RSTAB. However, the .rst file does not belong to RSTAB, but to another program. How do I control the association of the file type?
Crack Formation in First 28 Days
What does the "Crack formation in the first 28 days" option mean?
Free Student License
Is there any way to get a free student version of Dlubal Software (such as RFEM, RSTAB, RWIND Simulation) if I am not attending a university or college, but a high school, for example?
Question
I recently purchased RSTAB with the CONCRETE add-on module. Can I use it to perform the stability analysis of reinforced concrete columns?
Question
How do I display some results of all load cases in the printout report, but other results of selected load cases only?
Question
Is it also possible to subsequently deactivate the symbols for the FE mesh refinement in an existing graphic in a printout report?
Difference Between SHAPE-THIN 9 and SHAPE-THIN 8
What is the difference between SHAPE‑THIN 9 and SHAPE‑THIN 8?
Creating Member Eccentricity via COM Interface
How can I create a member eccentricity using the COM interface?
Effective Lengths of Frame Columns
How are the effective lengths of frame columns determined in RFEM or RSTAB?
Transverse Spacing stmax of Shear Reinforcement
Why does Warning 155 appear as a result of the reinforced concrete design of members for the existing stirrup reinforcement?
Question
How do I model a conical tower?
Question
SHAPE‑THIN calculates a very small shear area. Why?
Question
For some time, I have had display problems in RFEM and RSTAB that make it difficult to work with the software. It mainly affects the result display. The lines are extended, dotted, or not displayed at all, depending on whether I zoom in or out.
Do you have any idea how to solve this problem?
Dlubal Key Number and License Number
When starting the program, I get warning message No. 47 "The Dlubal product key does not match your license." How can I use the full version?
Question
Why do RF‑CONCRETE Members and CONCRETE determine a significantly higher provided reinforcement than the required reinforcement?
Question
I would like to carry out the flexural buckling design for timber components with imperfections and internal forces according to the second-order analysis. Is it sufficient to activate this in Details of the RF‑/TIMBER Pro add-on module or is it necessary to make additional settings?
Question
I would like to divide a line very finely, but I can only define the minimum of 0.5 mm using the "Divide Line → Distance" function. How can I avoid this problem?
LVL
Can I design laminated veneer lumber with RFEM 5 or RSTAB 8?
Question
I have printed some graphics into my printout report. Now, I would like to adjust the colors in the panel. Is it possible to change or update the color scale for all images in the printout report at once?
Question
When calculating a connection using the FRAME‑JOINT Pro add-on module, a message appears saying that the value is out of the valid range (existing value: 108, minimum value 100, maximum value 100). What does this message mean?
Question
How is the rotational restraint stiffness calculated for a non-continuous rotational restraint (for example, purlins) in RF‑/STEEL EC3?
Question
I would like to activate my license (not necessary with USB dongles), but I do not receive the "Authorization dialog box" when starting the program. How can I activate this dialog box?
Question
How can I calculate a timber-concrete composite floor with cross-laminated timber?
Question
In my model, the coordinate systems of all lines are displayed. This makes the model very unclear. Is it possible to switch off the coordinate systems of the lines?
Question
How can I export the effective lengths from the STEEL EC3 add-on module to EXCEL?
Question
How can I export the effective lengths from the RF‑STABILITY add-on module to Excel?
Question
In the RF‑/STEEL EC3 add-on module, I have selected two bracings with the same size as the shear panel type in the "Parameters" window for a beam to be designed. Thus, the beam should be supported laterally in the middle. Why is the eigenvector arbitrary, anyway?
Question
What is the critical load factor and how is it possible to determine it?
Question
How is it possible to import background layers?
Question
The online service "Snow Load, Wind Speed, and Seismic Load Maps" displays the snow load zones 1*, 1a*, 2*, and 3* for Germany. Where are these snow load zones defined?
Question
Does it make any difference for the calculation of a load combination if I set the calculation for the included load case according to the geometrically linear analysis or the second-order analysis?
Load Cases Displayed in Red in STEEL EC3
Why are some load cases displayed in red in RF‑STEEL EC3?
Question
I am trying to design an open, unsymmetric aluminum cross-section in RF‑/ALUMINUM and I am get the warning "Non-designable - 1022) General cross-section — Check of stability is not available". What is the reason?
Question
Is it possible to move or copy guidelines to other work planes?
- 003573
- RFEM 5
- RSTAB 8
-
- DYNAM Pro | Natural Vibrations 8
- DYNAM Pro | Equivalent Loads 8
- DYNAM Pro | Nonlinear Time History 8
- RF-DYNAM Pro | Natural Vibrations 5
- RF-DYNAM Pro | Equivalent Loads 5
- RF-DYNAM Pro | Forced Vibrations 5
- RF-DYNAM Pro | Nonlinear Time History 5
- Steel Structures
- Dynamic and Seismic Analysis
- Nonlinear Dynamics
- Eurocode 3
Question
In RF‑/DYNAM Pro, the "From self-weight of structure" option is available in a mass case. Is it always necessary to activate this option in order to consider the dead load of the structure?
Question
How can I check whether the user has a valid COM license for the data exchange?
Question
How does the Material Model - Plastic 1D work?
Question
When opening a DXF file, I get a message saying that access to this file is denied. How can I open the file?
Question
For deformation analysis using RF‑CONCRETE Deflect, I have activated the consideration of creeping and shrinkage. Where can I see the creep coefficient and the coefficient of shrinkage applied for the calculation?
Question
Why are the equivalent member designs grayed out in the Stability tab when activating the plastic designs using the partial internal force method (RF‑/STEEL Plasticity)?
Drop Panel Design for Reinforced Concrete Slabs
How can I model a thickened area of my concrete slab in RFEM such as a drop panel?
Question
I bought a new computer. How can I use my softlock license on it?
Download Authorization File
I cannot download the authorization file, or it is blocked by a browser. How do I get the file?
List of Possible Diameters for Rebars
How can I select a diameter of rebars for the design of reinforced concrete beam structures that is not available in the list of possible diameters?
Question
Where can I find the determined support forces for the crane runway girder? At the bottom flange of the crane runway girder or in the shear center of the cross-section?
Data Exchange with cadwork
Is it possible to exchange models between cadwork and RFEM/RSTAB bidirectionally?
Using "End Prestress" Load Type
Can I display the load that is iteratively applied to a member for the "End Prestress" load type?
Question
A member that is obviously supported insufficiently does not lead to the instability of the entire structure. Why?
Question
In the graphic, neither the work window nor the printout report shows the information about the displayed result (for example, internal force My, LC1: Self-weight). How can I activate the output?
Add-on Module RF-/FOUNDATION Pro
Does RF‑/FOUNDATION Pro work independently, without the main program?
Question
How can I import an IGES or STEP file into RFEM?
Question
Is it possible to create a printout report in English?
Question
How can I check if my free variable load has been applied correctly?
Question
I use member end releases with slippage in the longitudinal direction of the member. However, the calculation is always aborted, displaying the instability message. How can I optimize the system accordingly?
Question
How do I create a frame joint with taper in JOINTS Steel - Rigid?
Question
Is it possible to save the structures of the manufacturer-specific cross-laminated timber plates in the RF‑LAMINATE add-on module?
Question
In my L‑section, there is no M-y or M-z moment when rotating the member 45°. Why?
Question
How is it possible to display the main support direction graphically in RF‑LAMINATE?
Question
I have modified the stiffnesses of members. However, this modification should only be considered for specific load combinations. What is the procedure?
Question
During the calculation, I get an error message in RFEM with Error No. 1639, or in RSTAB with Error No. 1640: "Member No. XY and | Member hinges No. YZ are freely rotatable about the x-axis. Please check this in Table 1.17 (or 1.7 in RSTAB) or another related table." How can I solve this problem?
Question
I have used the RF‑/DYNAM Pro add-on module to generate the governing result combinations of seismic loads. What is the next procedure to perform the design of the individual structural components?
Question
I have modeled a continuous beam. One of the supports should only act when the deformation is 10 mm or above. How can I set such a nonlinearity?
Cross-section Rotated when Import into RFEM
My member is oriented at the inclination of principal axis when I import from SHAPE-THIN to a 2D RFEM model. How do I fix this?
Question
When running the project manager according to FAQ 002927, all files are displayed by default. How can I set the option to display only RFEM files without having to click RFEM each time?
Question
When I open a 3D PDF with Adobe Reader or Adobe Acrobat, I only get a blank page without any content displayed. What is the reason?
Shrinkage as Load
Is it possible to specify shrinkage effects as loads?
Result Beam and Temperature Gradient
Why do I get Error No. 10203 for the result beam when performing a design with RF‑CONCRETE Members?
Question
When exporting to Excel, I get the error message "Microsoft Excel is not installed on this computer", or the export function to Excel is grayed out and cannot be selected, although Excel is installed. Why?
Question
Is it possible to model and structurally analyze solids in RFEM?
Is it possible to model a semi-rigid composite beam with a line release using members in RFEM?
Is it possible to model a semi-rigid composite beam with a line release using members in RFEM?
Calculation of Cable
When calculating a cable using the STEEL EC3 add‑on module, there is the error message "Incorrect characteristic stresses for material No. 1! Please correct this in Table 1.2."
Question
For the cross-section design of a flat steel, I obtain abnormally high shear stresses due to the torsion in the STEEL EC3 add-on module, which can be disproved by a simple manual calculation. What is the error?
Question
It seems that the members stay not deformed after my RF‑FORM‑FINDING calculation. What did I wrong?
Question
RF‑STEEL AISC add-module shows non-designable results for general cross-sections because of shear buckling checks according to Chapter G. How do I solve this?
Question
Which tensile strength of concrete is used for the transition from State I to State II? fctm or fct;0.05?
Question
Is it possible to define the damage parameter ζ manually for the calculation with RF‑CONCRETE Deflect? In such a way that it should always be at least 0.5?
Question
Is it possible to manually adjust detail categories or a stress cycle of the detail categories?
Question
How can I determine the post-critical load of a structural system with a post-critical analysis?
Modifying Provided Longitudinal Reinforcement
How can I retrospectively reduce the determined provided longitudinal reinforcement in RF‑CONCRETE Columns?
Question
When installing RFEM / RSTAB, the Material Library was not installed at all, or was installed in the wrong location. Error No. 1158 is being displayed. It is not possible to find the Materials.dbd file. Where can I find it?
Question
Is it also possible to graphically display the intermediate values or design details from the calculation in RF‑CONCRETE Surfaces?
Question
What defines the dimensions "Length of Reinforcement" and "Width of Reinforcement" of the longitudinal reinforcement in RF‑PUNCH Pro? Is the anchorage length included?
Question
Where in RF‑PUNCH Pro is the direction of the individual reinforcement layers displayed?
Question
Is it possible to create a second design case in RF‑LAMINATE?
Question
In a nonlinear structural system, some load cases do not converge. However, load combinations can be calculated without problems. Why?
Question
How can I obtain internal forces, calculated in CRANEWAY, for a special x-location?
Question
Is it possible to display the curvatures or the radius of a slab in the element nodes?
Question
How can I adjust the height and width of a graphic?
Model was not found
I cannot open a model. The program says that the model was not found.
Question
Where can I find the results of the contact stress (soil pressure) for the elastic surface foundation or the member elastic foundation displayed on the screen?
Question
Is it possible to use a contact solid or a layered FE mesh for a solid also in the case of curved surfaces? Because I get Error No. 848.
Utilization Ratio in RF-CONCRETE Members
How do I display the utilization ratio of a compression column in RF‑CONCRETE Members?
Unstable Model
I have a model of a timber building, which I have transferred from Scia Engineer and adapted into the RFEM program. The models should be the same; however, it can only be calculated in Scia Engineer, while RFEM reports singularity. How do I edit the model to analyze it in RFEM?
Modeling of Timber-Concrete Composite Floor
How can I model a timber-concrete composite floor?
Parameters of Loads
Is it possible to parameterize models and loads with RFEM and RSTAB?
Question
Is it possible to design a spherically curved glass pane in RF‑GLASS?
Changing Method of Analysis of Load Cases and Load Combinations
RFEM calculates all load combinations automatically according to the second-order analysis. Is it possible to deactivate this?
Modeling Slab Made of Trapezoidal Sheets
Is it possible to model a slab made of trapezoidal sheets?
Broken License
My license does not work, what can I do?
Question
Does RFEM recognize that a member is connected to a surface despite the eccentricity?
Evaluation of Member Foundation
Why is no support force displayed even though I have modeled the member foundation?
Display of Line Support Results
Is it possible to display the mean value of the line support results?
Effective Length Factors for Aluminum and Steel Design
Are effective length factors determined automatically from a model in the add-on modules for aluminum and steel design, or do I have to make adjustments?
Displaying Results of Support Reactions
Which units are specified in the result display of the support reactions (kN or kN/m)? A note about this is missing in the graphic.
When the support reactions are given in kN/m, for which distance does the value apply?
Changing Font Size of Dimensions
Is it possible to change the font size of dimensions?
Applying Imposed Loads on Multi-Span Beams
I would like to calculate a multi-span beam. Is it possible to automatically apply imposed loads by span (for the design of the largest supporting moment and moment in the span)?
Free Rectangular Load on Freely Definable Area of Surface
I would like to only apply a rectangular load to a part of the surface. How can I do it?
Overlapping Elements
How can I find overlapping elements and revise the modeling?
Calculation with American Steel Cross-Sections
Is it possible to calculate with American steel cross-sections?
Shear Deformation of Member
How can the shear deformation of a member be taken into account?
Setting Cross-Section Description in Panel
How can I display only cross-section names in the panel for cross-section colors, without the standard and steel grade?
Setting Sheet Size for Printout Report
How can I adjust the sheet size for a printout report?
Definition of Line Hinges for Ceiling Slab on Shear Wall
I have modeled a ceiling slab supported on a shear wall. The shear wall should only absorb axial forces. So I have inserted a line hinge between the surfaces and defined it in the way that the hinges are available for all internal forces except for those in the ux direction.Although there is no hinge defined for ux, the plate deforms without being supported by the shear wall. Where is the error?
Entering Sway Bracing in RFEM or RSTAB
How can I consider a sway bracing in CRANEWAY?
Distribution of Internal Forces/Stresses
Four surfaces have identical loads, but they show different negative moments at the support location. Is this an error?
Model Generator
Can I adjust a model retroactively after it has been created using the model generator?
Setting of Result Units
Where can I set the units of the results in RFEM/RSTAB?
Modeling of Tapered Member
In RFEM/RSTAB, I have defined a tapered member consisting of two different cross-sections. This is now displayed incorrectly in the rendering (see the "Incorrect Taper" graphic). What did I do wrong?
Setting of Wall or Slab
Where do I find the setting to specify the entered structural component as a "wall" or "slab"?
How can I quickly model a chimney with reinforcement rings and stiffeners?
How can I quickly model a chimney with reinforcement rings and stiffeners?
Fire Resistance in Printout Report
The information about the limit time for the fire resistance design R in the RF‑TIMBER Pro add-on module is missing in the printout report. Is it possible to add this information to the printout report?
Stability Analysis - Torsion Available
I get the message "Existing torsion -> no stability design possible". Why does this appear and what can I do?
Bolted Connections with Surface and Solid Elements
How can I model and design general bolted connections with the surface and solid elements in RFEM?
Modeling Straight and Spiral Staircases in RFEM 5 and RSTAB 8
How can I create straight and spiral staircases in RFEM 5 and RSTAB 8?
Creating Nodes at Connection Point
My system includes several intersecting members, but they are not connected yet. What is the easiest way to create a node at the connection point?
Display of Principal Stresses as Trajectories
Is it also possible to display principal stresses as trajectories or vectors?
Snow Load by ZIP Code
How do I calculate a snow load using a ZIP code (ZIP)?
- 002528
- RSTAB 8
- RFEM 5
-
- FRAME-JOINT Pro 8
- LIMITS 8
- RF-JOINTS Timber | Timber to Timber 5
- RF-JOINTS Timber | Steel to Timber 5
- RF-JOINTS Steel | Rigid 5
- RF-JOINTS Steel | DSTV 5
- RF-JOINTS Steel | Pinned 5
- RF-JOINTS Steel | Tower 5
- RF-JOINTS Steel | SIKLA 5
- RF-JOINTS Steel | Column Base 5
- RF-PIPING 5
- RF-PIPING Design 5
- RF-FRAME-JOINT Pro 5
- Cranes and Craneways
- Building Information Modeling (BIM)
- Eurocode 3
- Eurocode 9
- DIN 18800
Internal Forces at Certain Nodes in Printout Report
Where can I find the internal forces at certain nodes in the printout report?
Design of Asymmetric Cross-Section
I design an asymmetric cross-section and get the message: "Non-designable: ER051) Moment about z‑axis on asymmetric cross-section, taper or set of members." Why?
Export of Nodal Support Forces to Excel Spreadsheet
I would like to export nodal support forces of several load cases, load combinations, and result combinations into an Excel spreadsheet. How should I proceed?
Holes in Steel Members
How can I consider holes in steel members?
Graphical Display of Nodal Displacements and Rotations
I would like to display global deformation with values, ideally colored according to size. Is it possible to set this?
Entering Cross-Sections
In my model, I use members with the cross-section IPE 140. Why does the cross-section of the members change if I add new members as IPE 200? How can I enter different cross-sections?
Coupling of surfaces
How can I model a coupling of superimposed surfaces that only borders on one line?
Tapered Built-Up Sections with Holes for Design
Is it possible to model and design tapered castellated beams in RF-STEEL AISC?
Bending Design of Block Foundations
How is the static depth d calculated in the bending design of block foundations (calculation as equivalent beams)?
Considering Column/Support Settlement in Model
How can I consider a column/support settlement in the model?
Renumbering Cross-Sections and Materials
Is it possible to renumber cross-sections and materials in RFEM and RSTAB?
Design of Strip Foundation
Unfortunately, I cannot find any information about how to design a strip foundation in RFEM. Is this not possible? What would be the alternative option?
Generate truss
Is it possible to quickly generate a truss girder with RFEM and RSTAB?
Displaying Moved Project Navigator
The Project navigator has been moved to another screen and I cannot manage to display it again. What should I do?
Shrinkage and Creeping Parameters
Is it possible to set the parameters for the shrinkage and creeping calculation in RF‑CONCRETE Members?
Altitude Level of Model
I saw somewhere that it is possible to set the ground level for a model in RWIND (for example, for a model with a basement). Unfortunately, I cannot find where to set this.
Using Couplings in Model
I would like to use couplings in a model. What is the difference between the coupling, dummy rigid, and rigid members?
FAQ 003180
I would like to convert the load from a surface load to a line load; that is, to apply it to the individual beams. How can I do this without using an auxiliary area?
Stability Design in RF-STEEL AISC
Why are my steel members not being designed for stability in RF-STEEL AISC?
Invalid Material
Why do I get the message "Invalid material" in the RF‑/STEEL add-on module when using stainless steel?
CSA S16 Class 4 Section
My section is classified as Class 4 and non-designable in RF-/STEEL CSA. However, my manual calculation shows a different class. Why the difference?
Concentrated Loads on Curved Surface
How can I apply concentrated loads to a curved surface?
Temperature Loads on Composite Beam
How do I define temperature loads on a composite beam?
Defining Surfaces
Can I define surfaces with any number of boundary lines?
Imposed Loads with Stiffness Modifications
I have defined temperature loads, strain loads, or a precamber. Once I modify stiffnesses, the deformations are no longer plausible.
Importing Properties of Another Element
Is it possible to transfer properties, such as the cross-section, or the surface thickness as well as the material of a surface, of an existing element to a new element?
Question
I have created a very simple model to check the manual calculation. I cannot get the expected results. Could you please help me?
Question
Is it possible to deactivate the minimum internal forces for the graphical display of the result combinations, so that only maximum values are shown?
Question
How is it possible to add or remove tables in the printout report?
Question
When should the punching load be determined with the (un)smoothed distribution of the shear forces at the critical perimeter?
Question
How can I graphically display the determined load increasing factors ß from the RF‑PUNCH Pro calculation?
Question
I would like to perform punching shear design on a column with downstand beams as a wall corner or wall end. However, the module applies an internal column. Is it possible to adjust it?
Question
The display of result values is too inaccurate. Where can I adjust the settings so that more result values for member internal forces are visible?
Question
Are the result values in FE elements averaged, or do they refer to the nodal values? Where can I set this?
Question
How is the friction set on a member hinge via the COM interface?
Question
Is it possible to set user-defined values of the standard in RF‑GLASS?
Question
When using the "Import Support Reactions as Load" function, I get the message "No surface has been selected upon which the load is to be applied." What is the reason for this message?
Question
Can I also use the load generator for the members that do not rest in one plane?
Question
In my Dlubal Software programs, I have the problem that the umlauts and special characters cannot be displayed. How can I change this?
Question
I have numeric stiffnesses of my members. How can I assign the stiffnesses to a member without having to create a notional material and a cross-section?
Question
How do I apply prestress to tension members?
Question
How can I apply a linearly variable load in Z, such as earth pressure, to a hopper-shaped rotated surface that acts in the XY plane but is oriented towards the central axis of the rotated surface?
Question
Is it possible to design bidirectional ribbed plates, unidirectional ribbed plates, or hollow core slabs in RFEM?
Message | Material Does not Meet Requirements of Current Standard
I get a message saying that my material does not meet the requirements of the current standard. How can I correct it?
RWIND 2 Trial
Can I download a trial version of RWIND 2?
Question
The scale of my graphic is not displayed in the printout report. How can I change this?
Question
How do I model a suspended membrane roof structure with line supports?
Question
How can I change the calculation parameters of a load case using the COM interface?
Deformations of Craneway
I am trying to manually check the deformations from the CRANEWAY add-on module. However, I obtain large deviations. How to explain the differences?
Question
In the RF‑/STEEL add-on module, I am trying to design a cross-section created in SHAPE‑MASSIVE. However, the cross-section is classified as invalid. What is the reason?
Question
Why are the values of a column base, head, or center on the individual columns only displayed partially for the results from the calculation in RF‑CONCRETE Columns?
Question
How can I perform the stability analysis in RF‑/STEEL EC3 for a flat bar supported on edges, such as 100/5? Although the cross-section is rotated 90° in RFEM/RSTAB, it is displayed as lying flat in RF‑/STEEL EC3.
Question
Why do I get major differences for the design of a longitudinally stiffened buckling panel in comparison with the German and Austrian National Annexes?
Question
Why does the Geo-Zone Tool web service show more results than the graphical map display on the website?
Question
How do I model a tent roof with two cone tips?
Question
Is it possible to keep the results from RWIND Simulation when deleting the FE mesh if I only adjust materials or support conditions?
Question
Why does the vertical position of a result member in my model have no influence on the bending moment My of the member?
Question
How can I use the COM interface to delete all nodes or members in a model, for example?
Question
How is the entry of the turbulence intensity related to the profile of the turbulence intensity in the RWIND Simulation program?
Question
After installing RSTAB version 8.25, the cross-sections seem different than before - much darker. Is there anything I can do about it?
Question
Is it possible to set user-defined values when viewing solid stress results?
Question
How can I create a nodal support with a nonlinearity diagram via the COM interface?
Question
How do I enter the temperature difference for a T‑beam defined as a rib?
Question
When performing the fire resistance design with TIMBER Pro, I get Error 10001. How can I fix the error?
Question
When evaluating line supports in result combinations, it is possible to select an average for the "sum of result combination" and the "displayed mean values". What does the "Sum of Result Combinations" feature include?
Question
I have selected all the members available for design in RF‑/TIMBER Pro. Why are the tapered members not designed?
Question
How can I model and design a crane runway girder with Dlubal Software?
Question
In RF-/TIMBER AWC and RF-/TIMBER CSA, I receive the error that says torsion limit exceeded. How do I bypass this error message?
Question
How can I switch to full-screen mode on the Geo-Zone Tool website "Snow Load, Wind Speed, and Seismic Load Maps"?
Question
After installing SHAPE-THIN, I receive Error 1000: Error in Material Library. How do I resolve this?
Question
Do you also offer student versions of the programs RFEM and RSTAB?
Question
Why is the strength always reduced by the kmod value of 0.6 during the calculation in the RF‑LAMINATE add‑on module, although I have load combinations with variable loads?
Question
For design in FRAME‑JOINT Pro, I get Error No. 30011 "The selected nodes have different geometry [...]." How can I design my connection?
Question
Is it possible to display the load cases and load combinations related to a result combination that lead to the maximum/minimum result?
Question
Can I consider a reduction of the stiffness according to the German regulation NCI NA.5.9 in TIMBER Pro?
Question
How do I install the network license (NET softlock) on the server?
Question
What should be considered when using a failure of columns under tension in the RF‑/DYNAM Pro – Equivalent Loads add-on module?
Question
Why is no stability analysis displayed in the results despite the activation of the stability analysis in RF‑/STEEL EC3?
Question
The authorization fails when starting the program. It seems that the dongle is damaged. What can I do?
Question
I have generated a trapezoidal area load. When displaying the load separately, I can only see constant loads on members. How can I change it?
Question
How can I create a curved or arched section?
Question
How can I change the colors of the selection and preselection?
Question
How are the signs for the release results of a line release and line hinges interpreted?
Question
When opening a file, the following message appears: "The model '1' is not linked to a project. Would you like to create a new project for this folder?" Is it possible to deactivate this message?
Question
How can I obtain weld stresses between two surfaces?
Question
Where can I find the exact standard description for the "map" component of the Geo-Zone Tool web service query?
Question
How can I use the COM interface to read out the global or local deformations of members?
Question
Is it possible to make the generated member loads from area loads via plane act eccentrically on the member cross-section?
Question
After calculation in the RF‑/DYNAM Pro - Equivalent Loads add-on module, the size of my file has increased significantly. The performance has worsened enormously. What could be the reason for this?
Question
How are hot-dip galvanized components considered for fire resistance in the RF‑/STEEL EC3 add-on module?
Question
How is the rotational stiffness of a buckling stiffener determined in PLATE‑BUCKLING?
Question
Why are my imperfections displayed graphically in different ways, and can I adjust the display?
Question
What happens with the programs and add-on modules in the event of the timeout of a network license? And how can I increase the timeout?
Question
Is it possible to manually specify a longitudinal reinforcement for design in RF‑PUNCH Pro?
Question
Is it possible to analyze panes of insulated glass without climatic load for check purposes?
Question
Is it possible to design the support pressure or the compression perpendicular to the grain in RX‑TIMBER?
Question
After the design was performed using RF‑/TIMBER Pro, I optimized a cross-section. Why is the utilization of the optimized cross-section exceeded now?
Question
Can I simulate the cracked state of a concrete cross-section for a bending beam with the "Isotropic Nonlinear Elastic 1D" material model?
Question
Why is the deflection of a reinforced concrete floor sometimes greater when selecting a larger basic reinforcement?
Question
Why are the stresses of the 90° orientation not displayed for a layer with the orthotropy direction 90° for σb,90 in RF‑LAMINATE?
Design of Load Case
Why is it not possible to select a load case for design in the add-on module, although it is defined within loads?
Question
I have a question about message No. 47 in RFEM. What is the exact meaning of the word "integrate"? What is the resulting effect?
Question
Does load generation also work for curved members?
Question
If I do not specify a basic reinforcement in RF‑CONCRETE Surfaces, I obtain the value X as an additionally required reinforcement. If I enter this value X as the provided basic reinforcement, I correctly do not get any additional required reinforcement.However, if I enter a value lower than the determined required total reinforcement as the basic reinforcement, the additionally required reinforcement is increased in such a way that the originally required reinforcement content is exceeded. Why?
Question
When trying to create an FE mesh, I get an error message. I cannot find any mistakes. Something seems to be wrong with the surface axes.
Question
When calculating a cross-section in SHAPE‑THIN, I get the error message that Fy is not positive.
Data Exchange via ISM Interface
When trying to exchange data via the ISM interface, I get the error message that the Bentley Structural Synchronizer is not installed on my computer when importing into RFEM. However, I have both programs installed on my computer.
Question
Why does the RF‑CONCRETE Surfaces add-on module not increase the amount of reinforcement until the SLS design checks have a design ratio of 1.0?
Question
How can I apply a temperature load to a surface using the COM interface?
Question
Although the current authorization file has been loaded, the program runs as a demo version.
Question
How can I apply wind load distribution to a cylinder according to EN 1991‑4, Section 7.9?
Question
I can only undo one action in my model. Is there any setting for this?
Question
How can I increase the minimum shear reinforcement in RF‑CONCRETE Surfaces?
Question
What are the possible effects of renumbering elements on the printout report and the add-on modules?
Question
In RF‑/STEEL EC3, is the "Elastic design (also for Class 1 and Class 2 cross-sections)" option under "Details → Ultimate Limit State" considered for a stability analysis when activated?
Question
I am designing a tapered beam and I get the message "Non-designable: ER051 Moment about z-axis on asymmetric cross-section, taper, or set of members". Why?
Question
In my model, some surfaces are displayed in gray, while others are displayed in white without a gray filling. The "solid transparent" display type is selected for the graphics. How do I display all surfaces in gray?
Question
Is it possible to use an average region in the result from contact stress?
Question
Is it possible to run Dlubal Software programs on a Mac?
Question
After calculating the cross-section data, an ellipse is displayed in the cross-section. In addition, wide lines above the x- and y-axis can be seen next to the coordinate system. Which displays are we talking about here? How can I deactivate it?
Question
Why can I not change the concrete cover for different reinforcement directions independently?
Question
How can I get the member end forces to design the connections?
Question
What is the optimal wind tunnel size in RWIND Simulation?
Question
Is there the ability to apply the adjusted wind tunnel dimensions in RWIND Simulation for all wind load cases instead of making the revision manually for each load case?
Question
For a ceiling slab calculated in RFEM, I would like to display the resultant of the support forces in one specific line support considering a single load case. The aggregate resultant of all support forces in a load case can be displayed. How can I display the resultant of the selected line support?
Question
I cannot manage to correctly import the cross-section from a dxf file into the SHAPE‑THIN program; the imported cross-section is in the wrong plane. What can I do?
Question
In which drawing plane must a cross-section be drawn in a CAD application so that it can be imported into SHAPE‑THIN using the dxf import?
Question
How can I create a drilled beam in RFEM?
Question
How can I perform the design of the tension resistance of a smooth column in a smooth bucket column base; that is, the design against pulling out the column?
Question
I have installed Rhino 7. When trying to export the model to RFEM, the data are not transferred. What am I doing wrong?
Question
How can I find out in which version of RFEM/RSTAB the model was saved?
Question
What are the costs of Dlubal Software service and maintenance?
Question
How is an inflatable object simulated in RFEM?
Question
I design timber components. The deformations of the load combinations deviate from the manual calculation by exactly the coefficient of the material partial safety factor. Why?
Question
I often edit the reinforcement provided by the program. Adjusting the reinforcement using coordinates takes a lot of time and effort when I have several beams in the model. Is there any way to speed up the reinforcement editing?
Question
I have already divided my membrane roof into individual surfaces. Can I quickly create a cutting pattern from these surfaces?
Question
How do I display the load combination description according to an action category, such as "D, L, W" instead of "LC1, LC2, LC3"?
Question
I would like to import a large, curved surface from Rhino into RFEM, but I get the following error message: "Command: ExportToRFEM5. Nodes compare tolerance is set too low. You could adjust it by document units settings. Export error. Error to write data, message: Coordinate Z is out of range. Export to RFEM finished." How can I fix this error?
Question
How can I define a material allowance at the edge of a cutting pattern?
Question
How can I edit the list of parameters using the COM interface?
Question
I would like to perform seismic design of an irregular structure. Does RFEM automatically carry out the modal analysis (consideration of multiple vibration modes) on the spatial system, or do I have to use special settings for this?
Question
When defining my material, I get Warning No. 1136 and cannot continue working. How can I prevent this warning?
RF-/STEEL Warping Torsion
For which programs is the STEEL Warping Torsion add-on module available?
Question
In the RF‑/STEEL EC3 add-on module, I obtain an extremely high design ratio for a member in the case of "Biaxial bending, shear and axial force". Although the axial force is relatively high, the design ratio seems unrealistic. Why?
Question
I have entered a structural system with the "z-axis directed upwards". Some directions are now incorrect when defining upstand and downstand beams and displaying the required reinforcement.
Question
I have modeled a structure made of outer and inner cables as well as membranes, and get a message about instability or the error message "Jacobi matrix is not positive definite" in the RF‑FORM‑FINDING add-on module. What should I do?
Question
What are the options for unifying solids?
Question
How can I display the result diagram in a solid?
Question
I have defined ten load cases and would like to add two load cases – after the third load case. Is this possible?
Question
What is the easiest way to include the graphical results of several load cases in a printout report? Until now, I have just clicked every single load case and printed it into the graphic.
Question
How can I determine the deformation in the cracked state of concrete using the a) required minimum reinforcement, b) required calculated reinforcement?
Question
How do you define the descriptions of various reinforcement results, such as the required reinforcement?
Question
Does the Grasshopper plugin require a special license (for example, RS‑COM)?
Question
In my model, I have to consider construction stages with nonlinearities, so I have to work with load combinations already include the self-weight.I have several load combinations to analyze and evaluate for the first construction stage as well as the second construction stage.The load combinations from the first construction stage do not occur in the second construction stage.I am not sure how to assign the load combinations in the construction stages (permanent or temporary).
Question
Why do I get such a small amount of reinforcement for the upstand beam? The amount of reinforcement for the downstand beams is significantly larger.
Question
How are the creep and shrinkage for columns considered in RF‑CONCRETE Members?
Question
Why do I get low supporting moments for a single-span beam? There is an eccentricity assigned to the single-span beam.
Question
How can I run the RX‑TIMBER Frame plugin? I did not find it in the Add-on Modules menu or in Project Navigator - Data.
Question
How can I use the "Connect Lines or Members" function via the COM interface?
Question
I would like to import a dxf file with a long file name into RFEM/RSTAB. Unfortunately, I get the error message that the file cannot be found. What should I do?
Question
Which filter settings should be selected in the material library for concrete in order to perform design in RF‑CONCRETE according to the Swedish National Annex? In RFEM, no Swedish standard group is available for the selection.
Question
I noticed deviations from my sources in the online service "Snow Load, Wind Speed, and Seismic Load Maps". Where can I find information about the sources of your online service?
Question
I have analyzed two models of an inclined bored pile as a support with defined spring stiffness. A surface that can be moved horizontally (globally) is used for the force transmission. The bored pile in Model A is a support inclined by 15° with a spring stiffness of 2,000 kN/m in the axial direction. The bored pile of Model B is a support with the defined spring stiffnesses, divided into the respective horizontal and vertical components. The value of the spring stiffness is always the same (2,000 kN/m). In my opinion, both models are equivalent. Why are there different results in the deformation anyway?
Question
Warning 282449 appears: "Lines Nos. ... are equal". Do identical lines have an effect on the calculation? Do I have to delete identical lines?
Geo-zone tool
I noticed deviations from the map of DIN EN 1998‑1 or DIN 4149 in the online service "Geo-Zone Tool: Snow Load, Wind Speed, and Seismic Load Maps". Can you tell me which map is current and thus governing?
Question
I have just noticed that the STEEL EC3 add-on module also calculates with γM0 = 1.0 when designing a tension member, although it should actually be γM2 = 1.25. How can I perform the design correctly?
Question
How can I export the reinforcement results from RF‑CONCRETE Surfaces to Excel?
Question
Why does the FE mesh of my conical membrane look angular after the form-finding?
Question
I have a question about the results of the serviceability limit state design: How is the increment of the dead load by the factor of 1.8 and the imposed load by 1.48 explained in the result combinations for the SLS design?
Question
In the current program version of RFEM, the calculation no longer converges. I have already calculated the model in different RFEM versions:
RFEM 5.21.02 - Calculation converges
RFEM 5.23.02 - Calculation does not converge
RFEM 5.24.01 - Calculation does not converge
Question
Does RF‑LAMINATE perform the design of a net cross-section?
Question
How can I display the vertical deformation of a column in state II? I cannot find this setting for the serviceability limit state design.
Question
In the filter settings for the values on surfaces, you can display a certain range of results and hide the rest. How can I hide a certain range of values and display the rest?
Question
How do you distinguish between the response spectrum with equivalent loads method and the response spectrum without equivalent loads method in RFEM and RSTAB?
Question
The RF‑CONCRETE Columns add-on module cannot determine sufficient reinforcement. However, the columns can be designed easily in a comparative calculation. Can you help us?
Question
Is it possible to design intermittent welds in the CRANEWAY add-on module?
Question
For a buckling analysis, PLATE‑BUCKLING determines the governing shear stress of τ = 7.45 kN/cm², while RF‑/STEEL gives the result of the maximum shear stress of τ = 8.20 kN/cm². Where does this difference come from?
Question
How can I increase the maximum number of iterations in RFEM/RSTAB?
Question
How can I read out the resultant of a section via the COM interface?
Question
I am trying to import a model from cadwork. Unfortunately, I cannot correctly transfer the cross-sections from cadwork to RFEM. Do you have any tips?
Question
Is the preset crack width of, for example, wk = 0.3 mm also designed for primary cracks? According to the manual, the average strain is considered. Does this ensure that the primary crack does not exceed the value wk = 0.3 mm?
Question
Why do I get a design ratio for the cross-section check according to 6.2.9.1 in the STEEL EC3 add-on module? Why is an * added to Equation (6.36)?
Question
Where can I adjust the effective length lef according to Table 6.1 of Eurocode 5 in the TIMBER Pro add-on module?
Question
The TIMBER Pro add-on module seems to multiply the shear stress by 1.5. However, the Eurocode does not specify any additional factor. How do you explain this difference?
Question
I am designing a frame with a taper (a docked cross-section). STEEL EC3 classifies the taper in Cross-Section Class 3. Accordingly, the elastic resistances are taken into account, which is very unfavorable. According to the standard, the taper should be categorized in Class 1, and thus the plastic reserve should also be usable.
Question
When importing a model directly from AutoCAD, the shape of the "spline" is sometimes incorrect.
Question
When modeling a beam connection to a continuous column, I have the problem that the column flange fails under bending. If I add backing plates in the FRAME‑JOINT Pro add-on module, nothing changes for all design ratios. Why?
Question
Is it possible to display more values for the stress distribution over the layers in RF‑LAMINATE?
Question
How is the position of the additional reinforcement considered in RF‑CONCRETE Surfaces when determining hc,ef?
Question
How does RF‑STABILITY or RSBUCK determine the buckling load? According to the manual calculation, the respective buckling loads should be about 10% higher.
Question
How is the buckling load determined in RSBUCK if the most unfavorable value is transferred from RSTAB for a non-constant axial force distribution?
Question
On the dlubal.com website, I discovered that you can display results along a line and enter points manually. Where can I find this result view?
Question
I have program version 5.24, and the calculation takes longer than in the previous versions for the same model. What is the reason for this?
Boundary Moments in Warping Torsion
I use RF-/STEEL Warping Torsion to design an eccentrically modeled wall beam, which is loaded transversely with a distributed load. While the bending moments in the main program are zero at the member start and member end due to the hinges, RF‑/STEEL Warping Torsion outputs moments there. Thus, the span moment is reduced incorrectly. How do I get the boundary moments to zero?
Question
How to model a cable net structure in using the RF-FORM-FINDING add-on module?
Question
How can I delete the copies of generated nodes?
Question
How is the support spring calculated for a wall?
Question
I would expect the results from my load combination (CO) set to a linear analysis to equal the summation of the results from my load cases (LC) also set to a linear analysis. Why do the results not match?
Question
How can I design dowel-laminated timber (DLT) or nail-laminated timber (NLT) in RFEM?
Question
For a tapered member, I get the error message "Cross-section tapering mismatch". What can I do?
Question
I get the error message "Entry in the 'Beam spacing' box is not within the allowable range". What can I do?
Question
For my bachelor's thesis, I would like to integrate the RSTAB printout report in LaTeX. It is possible to completely integrate a PDF document, as shown in the viewer. This works with any PDF document, but not with the printout report created in RSTAB. What could be the reason?
Question
I have defined a wind profile for RWIND Simulation up to a height of 100 m. Is the wind profile dependent on the size of the wind tunnel?
Question
I am calculating deformations at time 0 and at time infinite. The deformations at time infinite seem plausible. The deformations at time 0 seem significantly smaller and thus implausible. Why?
Question
How can I teach the program to automatically increase the longitudinal reinforcement when calculating the deflection of slabs in order to meet the preset deflection?
Question
How can I set the deformation coefficient kdef in the program?
Question
Does the program use different values of the modulus of elasticity for different temperatures? How do I activate them?
Question
I cannot find a reason why no plastic design is performed for the cross-section of Class 1. Normally, it is necessary to select the check box for elastic design.
Question
I am using the COM interface and Grasshopper for the calculation of complex structures. For this task, I need to create NURBS lines. Could you explain how to set NURBS? For example, what kind of data should be provided for knots?
Question
I would like to move some elements. When moving them, my members are deleted; what is the reason?
Question
How is the load distributed to the members in the angular axis method if the members are excluded from the load application?
Question
How do I activate pipeline modeling?
Question
A rigid member should only be able to absorb tensile forces or compressive forces. What are the options for considering these nonlinearities in the calculation?
Question
How can I delete the RWIND Simulation results in an RFEM or RSTAB model?
Question
What type of information is graphically displayed when hovering over an object with the cursor?
Question
How can I place a section plane in the model to hide distracting zones?
Question
When I select a surface by clicking it, the nodes and lines belonging to the surface are not included in the selection. Is there any possibility to integrate them?
Question
Is it possible to display the RWIND Simulation results in ParaView?
Question
Does a user-defined layer composition in RF-LAMINATE need to be shared separately with other users along with the RFEM model file or is this information stored directly in the RFEM file?
Question
I applied a unit load of 1 kN/m² to the top slab of a 3D model consisting of three identical floors to determine the spring stiffness of the supports from axial forces and deformations of the columns for 2D modeling of the slabs. Despite deactivating the self-weight of the structure, the column axial forces are redistributed story by story. Is it possible to deactivate this effect?
Question
How can I define a concentrated moment in the middle of a surface?
Question
Is the load on beams correct when transferring the data of the crane data sheet to CRANEWAY with the correct sign?
Column Base with Stiffeners
Is there an add-on module that I can use to design a restrained column base with stiffeners on both sides of the column?
Frame Joint
Is it possible to use one of the RFEM 5 / RSTAB 8 add-on modules to design a frame joint with a docked beam, stiffeners, and any number of bolt rows?
Question
Windows Defender does not allow me to install RX‑TIMBER. Is it possible to get around this?
Question
For the direction of internal forces, there are four options for smoothing the internal forces under the "Grouped" selection box. Which grouping should I select here?
Question
It is not possible to click OK in the wind load generator for a duopitch roof. How should I set up the generator so it will be possible to generate the load?
Question
The installation of a Dlubal Software program is not possible due to the following message: "Program unsafe, protection by Microsoft Defender SmartScreen". How can I install the program?
Question
How can I perform a stability analysis for a tapered member?
Question
I have modeled two nodes on a surface in RFEM. The results do not show the displacement at these two nodes. How can I obtain it?
Question
I would like to export the reinforcement of a slab in the Nemetschek format. However, no setting is available in the following window after selecting the surface.
Question
I want to support a member along its line. When defining a fixed line support on the line of a member, the check leads to an error message regarding an undefined surface. How can I fix the problem?
Question
How can I display the deformation values of the individual intermediate nodes on members?
Virus scanner
I cannot open RFEM and RSTAB anymore: nothing happens when double-clicking the icon! Also, no error message is displayed. Restarting the computer did not help, either.
Question
How can I quickly transfer a modified value to the other rows in the input table of an add-on module?
Question
Does RFEM integrate with Autodesk Inventor?
Question
How can I consider a hole in the web only near the support? The parametrization can only be applied to centrally arranged holes with the same distance.
Question
Is it possible to use different stiffnesses for the x and y directions of a surface in RFEM?
Question
How is the Cp coefficient of the surface result determined in RWIND Simulation?
Question
How can I change the details and the National Annex in the STEEL EC3 add-on module using the COM interface?
Question
How can I change the line width in RSTAB?
Question
How can I model a weld, for example, as a fillet weld?
Question
Is a load considered within the surface for "Nodal support with column"?
Question
How can I import an IFC model into the RWIND Simulation environment?
Question
Why is it not possible to use result combinations in RF‑STABILITY? It is possible in RSBUCK.
Question
How can I transfer the effective lengths of members using the COM interface?
Question
After opening a duopitch roof beam from RX‑TIMBER in RFEM/RSTAB, it is displayed with a gap in the apex zone. Does this affect the calculation?
Question
What languages are available in Dlubal Software programs?
Question
RFEM cannot be started. What could be the reason?
Question
Is it possible to display the results of shear forces on a member in the horizontal plane?
Question
How can I import the authorization file into SHAPE‑MASSIVE?
Question
How can I additionally model welds for the connection of two surfaces with a contact solid?
Question
How are the internal forces for a downstand beam (rib) determined in RFEM?
Question
How can I specify the reference material in composite cross-sections?
Question
When calculating a membrane, the resulting deformation of load case LC1 and combination CO1 differs, although combination CO1 only contains LC1 with the factor of 1.00. What is the reason for this?
Question
How can I create a user-defined coordinate system via the COM interface and assign it to a nodal support?
Question
How can I enter a member elastic foundation that only acts in one direction?
Question
Why can I only calculate seismic loads in one direction when using RF‑/DYNAM Pro?
Question
I would like to use surface releases to model a bolt connection that can only absorb compressive stresses from the support. Unfortunately, I cannot do this because my model is always unstable. Is there a template model?
Question
I would like to enter a varying member load, but the load parameters are grayed out. What should I do?
Question
How do I display nodal displacements graphically?
Question
Can silos/tanks be exported from RFEM to Revit?
Question
How can I remove graphics from a printout report?
Question
Although I have deleted the area load plane, the members are still loaded. Why?
Question
I would like to perform a stability analysis of the upper flange in a long truss. What is the best way to proceed?
Question
Is it possible to display the interactive Geo-Zone Tool map with the load zone entries digitally as an image using a web service?
Question
How can I display the deformation in the current construction stage and in relation to the initial system in RF‑STAGES?
Question
I am performing a design in RF‑/STEEL AISC for result combinations from RF‑/DYNAM Pro and get the error message "Not designable - Null value of the critical moment on the segment". What should I do?
Question
Why does the deformation of a modeled single-span beam not correspond to the manual calculation?
Question
How can I display only positive values in the value scale?
Question
My connection cannot be designed due to an incorrect geometry input. What can I do?
Question
I get the following message when starting all installed Dlubal programs (also when running as administrator): "The application was unable to start correctly (0xc0150002)". What can I do?
Question
How do I obtain the connection forces of a deep beam that is rigidly connected to other surfaces?
Question
Is it possible to create visibilities using the COM interface?
Question
Does the nonlinearity that can be activated for a surface support in the z‑direction refer to the entire supported surface, or only to the areas that correspond to the nonlinearity?
Question
What are the StandardID and AnnexID of various National Annexes for processing using the COM interface?
Question
How can I display the result values on surfaces in the middle of a finite element?
Question
How can I change the font color of the guideline numbering?
Question
I have defined a member on a polyline. Now, I get an error message saying that there is an unsupported member type when performing a deformation analysis of this member. What is the cause and how can I fix it?
Design of SHAPE-THIN Section
How can I design any SHAPE‑THIN cross-section in detail in RFEM 5 or RSTAB 8?
Question
How can I assign a common eccentricity to several different cross-sections at once?
Question
In connection with a calculation according to the large deformation analysis, I get significantly smaller deformations than for a calculation according to the linear static or second-order analysis. How is this possible?
Question
How can I change the display of the arrows for punching loads in RF‑PUNCH Pro?
Question
Where can I find the action category for cranes in my load cases?
Question
How can different members or cross-sections be rotated at once?
Question
When creating the printout report header, the path to the company logo must be entered manually after each update. Which path should be selected here?
Question
How does the activation of the precamber imperfection work?
Question
Is it possible to deactivate the stability analysis by member within a case in the RF‑/STEEL EC3 add-on module?
Question
In SHAPE‑THIN, I get an error message saying that the material library cannot be opened. I have reinstalled the program and integrated the material library of another computer, but without success. What should I do?
Question
Is it possible to extend the computing times by using a graphics card that is not recommended, or does this only affect the display?
Question
When designing a ring beam, I usually have Mz moments, which creates the compression and tension zone on the right and left of the cross-section. However, the reinforcement in CONCRETE is arranged at the top and bottom of the cross-section. How can I set the reinforcement to be arranged on the right and left?
Question
How can I graphically display the effective lengths of members?
Question
After activating a layered FE mesh, the axis orientation is automatically reset to the default. How can I keep the defined axes after layering the FE mesh?
Question
The calculation of a file runs smoothly for my colleagues, but I get the message "Calculation stopped" for the same file. What should I do?
Question
How can I change the colors of user-defined visibilities for a screen and a printout report?
Question
How can I change a user-defined visibility?
Question
I have modeled a continuous beam with elastic foundations that is stressed by a constant line moment. Why is the message about instability displayed after the calculation?
Question
How can I create a trapezoidal hollow section?
Question
The technical article about a result beam says that it should rest in the center of gravity of the considered objects. Does this mean the centroid of stiffness? Can I display it graphically with coordinates?
Question
Can I consider a shear force reduction with the RF‑/TIMBER Pro add-on module?
Question
How can I model any cross-section as a floor beam in RFEM?
Question
In which case is it necessary to activate the self-weight in load cases, such as wind?
Question
How can I retroactively apply a reinforcement to a modeled downstand beam?
Question
I have a model with relatively short members as couplings. The display of internal forces is confusing due to the short members. Is there any way to display the internal forces so that they are legible?
Question
When starting Dlubal Software programs, the error message "Server is busy" appears. My colleagues do not experience this problem. I have already tried reinstallation. What should I do?
Question
I would like to design the connection of the diagonals of a truss with a steel lower flange and timber diagonals. Is this possible?
Question
Why is the surface pressure distribution in RFEM different from the corresponding surface pressure distribution in RWIND Simulation?
Question
Is it possible to also have RFEM output the area of each finite element along with its location?
Question
Are "rib" elements considered with Revit to RFEM integration?
Question
I cannot create a new model in Project Manager: The button has no function. Where is the problem?
Question
Why does RWIND Simulation not converge to the preset minimum pressure difference, but oscillates about a higher limit value?
Question
Is it sufficient to use a line hinge between two surfaces?
Question
What is the purpose of a fillet weld in SHAPE‑THIN?
- 004727
- RFEM 5
- RSTAB 8
-
- Concrete Structures
- Steel Structures
- Timber Structures
- Tensile Membrane Structures
- Structural Analysis & Design
- Finite Element Analysis
- Wind Simulation & Wind Load Generation
- Stability Analysis
- Dynamic and Seismic Analysis
- Form-Finding and Cutting Patterns
- Cold-Formed Sections
- Eurocode 1
- Eurocode 3
- Eurocode 5
Question
Are the models and presentations from Info Day 2020 freely available, and can you send them to me?
Question
In my structure, a channel section runs flush with a surface. What is the easiest way to simulate a welded connection?
Question
In my structure, a channel section runs flush with a surface. How can I display the welded connection in detail?
Design of Member Sets
I am designing a set of members using RF‑/STEEL EC3. In accordance with the manual calculation, the design is fulfilled, but it cannot be performed successfully in the add-on module. Why?
Question
How can I delete the individual loads by load case?
Question
In RF‑PUNCH Pro, I get an error message saying that the selected edges of the surface do not converge to a corner. What does this mean? How can I fix the error?
Question
How can I shorten a member by a certain amount?
Question
How can I define individually or simultaneously acting load cases from different actions?
Question
Can I create a user-defined load or result combination even though they are created automatically?
Question
Can I optimize all cross-sections in my model quickly using internal forces?
Question
How can I change the colors of member hinges for a screen or a printout report?
Question
In my structure, there are three load cases on the left, which should act individually with each other, and three load cases on the right, which should act individually with each other. However, the individual load cases should be combined with those on the other side. How can I set these conditions?
Question
In RFEM, is it possible to set a symmetry axis for a symmetric structure so it would be necessary to only model and calculate half of the structure?
Question
In the "Edit Load Cases and Combinations" dialog box, the load case description is displayed in black in the "Load Combinations" tab. Is it possible to set the font color of the selected load combinations to be displayed in white to make the descriptions readable?
Question
When calculating deformations in RF‑CONCRETE Members, I see inconsistencies in the deflection diagram. Why?
Question
Is it possible to couple members with solid elements?
Question
Which cross-sections can I design with the "RF‑/STEEL Cold-Formed Sections" add-on module?
Question
How can I display shear stresses on null elements in SHAPE‑THIN?
Question
What setting should I make to display all local extreme values of member internal forces in my structure, not just an extreme value of the entire model?
Question
How can I select objects via the COM interface?
Question
My panel has suddenly disappeared. How can I restore it?
Question
How can I retroactively print an image of my model without loading and without reference to a load case into the printout report?
Question
How can I model a timber panel wall with RFEM?
Question
What is the meaning of "Common Surfaces" in RF‑PUNCH Pro? Do I have to set anything here?
Question
I do not obtain any deformations in the results of the calculation with RF‑CONCRETE Surfaces. What can be the reason?
Question
I get Error 108 when designing steel stress in RF‑CONCRETE Surfaces. Why?
Question
Why does a surface with complete foundations become unstable after dividing it and assigning a line hinge to it?
Question
I have two solids that are adjacent to each other, but not congruent. What should be considered in the modeling?
Question
Is it also possible to perform crack width analysis according to EN 1992‑1‑1, Section 7.3, in RF‑/FOUNDATION Pro?
Question
Rectangular loads are not displayed correctly. Do I have to adjust anything?
Question
At the edge of a surface, there is an opening into which a rigid surface should be inserted. I get an error message regarding the opening. What should I do?
Question
Why is a node I selected not displayed?
Question
How can I define the orientation of nodal supports in my structure to a specific member axis?
Question
How can I change the display of support forces from local to global for a rotated nodal support?
Question
I have modeled a line hinge, but I cannot see it on the corresponding line.
Question
When determining internal forces in RFEM, I obtain compression axial forces that do not arise in the design internal forces when designing in RF‑CONCRETE Surfaces. What is the reason?
Question
Is it necessary to enter the loads of a crane for each axle or wheel in the table of crane loads in Window 1.4?
Question
How can I quickly find all the members that are parallel to each other?
Question
How can I modify the FE mesh settings via the COM interface?
Question
Is it also possible to reduce the shear force on a support or perform design with the shear force at a distance d to the support in RF‑CONCRETE Surfaces?
Question
How can I graphically apply a member load to several members in RFEM 5 and RSTAB 8?
Question
How can I create visibilities via the COM interface?
Question
When performing "manual definition of the reinforcement areas" in RF‑CONCRETE Surfaces, do I have to completely reinforce the entire structural component manually? Or does RF‑CONCRETE Surfaces apply the required reinforcement in the areas where I have not performed the manual definition?
Question
How can I change the color of the black background?
Question
There is too little space in the table of contents with the two-column arrangement.
Question
I am looking for the possibility to automatically generate special structures or to load parameterized structures.
Question
Is it possible to import the coordinates of a line grid from Excel?
Question
After importing a file, some nodes do not rest exactly on a line. Is there any option to unify the coordinates?
Question
How can I copy a line grid?
Question
Is it possible to save a line grid as a pattern and reuse it later?
Question
A cable structure model created in RFEM 5.13 cannot be calculated in the current version of the program. The program displays the message "Stiffness matrix is singular", although it could be calculated in the original version. How can I fix this?
Question
How can I apply an oblique concentrated load to a member without dividing the member?
Question
How can I place a cross-section on another cross-section?
Question
How do I activate my newly purchased products when using a softlock network license?
Question
I get a message in the Project Manager saying that "Project already uses folder. Please specify a different folder." What is the background of this message, and how can I solve the problem?
Question
How can I adjust the size of a graphic in the short form printout?
Question
How can I display the results of an add-on module in the graphic in RFEM or RSTAB?
Question
When starting the calculation, a message appears saying that the maximum number of 9,999 load cases and combinations has been exceeded. What can I do?
Question
How can I model a line perpendicular to the next line from a particular node?
Question
In my model, there is a member that is only subjected to tension, but cannot be defined as a tension member, otherwise the model becomes unstable. After the calculation according to the second-order analysis, small moments arise. How can I redistribute these internal forces efficiently?
Question
How can I consider loads from the self-weight as "favorable" and "unfavorable" for the combinations?
Question
A member load should act in the direction of the negative local member axis z. How should the load be defined?
Question
I have set my beams unconnected to a column. Can I quickly correct this?
Question
Can I quickly halve or double the grid spacing?
Question
How can I transfer member properties to members that have already been created?
Question
For design with CONCRETE NL, is the creep applied to the entire cross-section, or only to the concrete compression zone?
Question
Why is it not possible to change the solving method for the equation system of my model?
Question
How can I change the design of the program interface?
Question
When I create a user-defined result value, the RFEM solver window opens briefly and the calculation is apparently performed again. Why? I have already performed the calculation.
Question
During the check in RF‑/DYNAM Pro, I get the message "No natural vibration case or dynamic load case has been selected for the calculation". Why?
Question
Which stresses are most important for glass design consideration when using RF-GLASS?
Question
Is it possible to model cold-formed sections in SHAPE‑THIN 8 and design them in RF‑/STEEL Cold-Formed Sections?
Question
I get the error "The stiffness matrix is singular!" for a calculation in RF‑FORM‑FINDING. What can I do?
Question
How can I define a slippage between two surfaces?
Question
When defining friction, there are two interaction relations. How do they differ? Should there not be an identical result when defining the same friction coefficients?
Question
Is it possible to design a crane runway girder without stiffeners on supports in CRANEWAY?
Question
I get Error No. 30855: "RWIND Simulation solver not found". Why?
Question
The critical perimeter at the wall corner in my structure looks strange. What can be the reason?
Question
Can I enter a provided basic reinforcement in RF‑CONCRETE Columns?
Question
Which interfaces are available for import?
Question
How many members can be connected to a node in RF‑/JOINTS Timber - Steel to Timber, and what is the minimum angle between the members?
Question
When generating an FE mesh, I get an error message saying that the definition lines of a surface are not closed. What should I do?
Question
I have performed a buckling analysis in RF‑ALUMINUM. Where can I find the parameters used for the design in the add-on module?
Question
Is it possible to automatically consider the rigidity of fasteners in the RF‑/JOINTS Timber - Steel to Timber add-on module when determining internal forces?
Design According to ÖNORM
Can I design a reinforced concrete structure according to ÖNORM in RFEM?
Question
How are the sign conventions for internal forces defined?
Question
As of the versions of RFEM 5.23 and RSTAB 8.23, glTF models can be exported or saved. What are they?
Question
For a specific combination expression, I would like to consider a load case with a combination coefficient that deviates from the standard. How can I proceed?
Question
Can I consider the normal force when designing a rigid end plate connection according to the DSTV guideline?
Question
I get a message saying that the General Method is only allowed for I-sections, even though I do want to design an I-section. Why?
Question
I have a flat surface with a line running through it. Why is the "Divide Surface" function grayed out?
Question
Which types of glued-laminated beams can be calculated with a raised dry joint?
Question
How can I determine the orientation of a nodal support perpendicularly to a line?
Question
I have entered a line support with "Wall in Z", but I cannot select the wall end for the design in RF‑PUNCH Pro. Why?
Question
I have the following problem when programming in VBA with RFEM lines: "No assignment to data field possible". What can I do?
Question
When modeling a wall, lifting forces that we cannot explain arise in the support area. Once the wall is not modeled and the slab is supported directly, we obtain plausible support forces. What is the error?
Question
When using a line release, I get an error message saying that the model is unstable. Why?
Question
I already have licenses, and now I would like to test an add-on module that I have not yet bought. How can I proceed?
Question
How can I create intersecting surfaces/solids without keeping the corresponding intersection?
Question
Where can I find the RF‑COM/RS COM add-on module?
Question
I would like to determine the resulting wind load for a building by floor. What is the easiest way to do this?
Question
Why do I get large differences in the results, both for the deformation and the bending moments, when applying the inclination via imperfection to a single member and an articulated set of members with the same total length?
Question
I get Warning No. 465: "Line [No.] is simultaneously used as a boundary line of a surface and an opening". Do I have to adjust anything?
Question
Is there any way to modify the cover sheet once it has been created?
Question
I have to model a curved member and would like to know how to do it with RSTAB.
RFEM 2D and RSTAB 2D
Why do I get a message that the authorization of the program has failed when starting RFEM 2D?
Question
How can I model a shaft with a cover that has a variable thickness?
Question
I get error messages when starting the COM examples of C#. What can I do?
Question
Why do I receive no stresses as a result for an orthotropic surface?
Question
Is it possible also to create a user-defined response spectrum in RF‑/DYNAM Pro?
Question
Is it possible to perform punching shear design on concrete surfaces assigned to the "Orthotropic" stiffness type?
Question
How can I enter or read out a response spectrum via the COM interface in DYNAM Pro?
Question
How can I incrementally apply the load of a load case to the model?
Question
For a single-span beam with a uniform load (M=q*l2/8), the moment graphic is not displayed as a parabola. The table result values are only correct at the maximum, but not at the other locations.
Question
I have edited the material in my model. When starting the calculation, I get an error message. What can be the reason?
Question
Is there any feature for quick generation of a girder grillage or a grid?
Question
For a line support, I get an error message saying that the line is not assigned to any surface. How can I run my calculation?
Question
Which static depth d is applied in RF‑PUNCH Pro for design on surfaces with a variable thickness?
Question
I would like to extend an existing structure with a false ceiling that is not connected to the existing columns. How can I model it?
Question
Why can I no longer display the intermediate results in RF‑CONCRETE Members?
Question
During the installation, I get a message saying that the files "hasplms.exe" and "hasplmv.exe" could not be deleted. What should I do?
Question
Can I use RF‑CONCRETE Surfaces to determine the steel mass for the inserted reinforcement?
Question
The definition of a result beam does not seem to be correct. There is no integration area and no results are displayed. What can be the reason?
Question
When calculating a cross-section, I get a message saying that the weld is not connected to two elements. What should I do?
Question
How can I delete a load case in the Project Navigator?
Question
I have calculated a box girder. Which surface results or surface stresses can I use to evaluate the buckling behavior of the web plates?
Question
I would like to calculate the results, such as ordinates, static moments, and stresses, at a specific location of a cross-section. What should I do?
Question
I would like to check the internal forces on a member. Can I display the axis system, and what do the internal forces refer to?
Question
How can I quickly transfer the settings of the Display navigator from one view to another?
Question
After importing an .stp file, my model is unstable. What can be the reason?
Question
How can I add cross-section details, such as a cross-section image, stress points, and others, to the printout report?
Question
I would like to use the export of visual objects to RWIND Simulation. How do I scale my visual object for the import?
Question
When calculating a stiffened panel, I get the message that the boundary c/t-zone of the panel is not supported. What should I do?
Question
When calculating a longitudinally stiffened panel, I get a message saying that the stiffener cannot be at the end of the panel. What should I do?
Question
When calculating a buckling panel, I get a message saying that some elements are connected to the panel, but they are not defined as stiffeners. What should I do?
Question
When selecting the elements for a stiffener of a stiffened panel, I get a message saying that at least one of the selected elements is a null element. What should I do?
Question
How can I display the stresses in the stress points in RF‑STEEL Members?
Question
How can I calculate stresses in SHAPE‑THIN?
Question
How can I change the display of deformation for members from colored cross-sections to lines?
Question
How can I rotate a single foundation in RF‑/FOUNDATION Pro?
Question
Which origin do the coordinates of guidelines refer to?
Question
When using line releases, I cannot understand the failure definition. To which axis do the nonlinearities "Fixed if positive vz" and "Fixed if negative vz" refer?
Question
When I want to print my model as "window filling" in the printout report, it sometimes happens that the comments and the font are cut off from the dimensions in the printout report.
Question
Window "1.2 Geometry", the "Supports" tab, provides the selection between none, rigid, or non-rigid stiffener. How does this affect the calculation?
Question
Is it possible to print graphics via the COM interface?
Question
For line releases, I obtain the resultants in the horizontal direction, which I cannot understand.
Question
How can I customize the font size and font style of guidelines and their descriptions?
Question
How can I read out the load distribution of a line load from a combo box in RF‑COM?
Question
What options are available for the serviceability data in RF‑LAMINATE to calculate the local deformation uz,local applied in the design?
Accidental Design Situation
Can I also use the automatic generation of accidental combinations for fire resistance, for example?
Question
In RF‑CONCRETE Members, I can display the rendering of a provided reinforcement in a structure. Is this also possible for the results from RF‑CONCRETE Surfaces? In the form of single members or meshes?
Question
Opening add-on modules is very time-consuming for very large models that have results. How can I increase the speed?
Question
How can I assign certain surfaces to a result beam in order to integrate internal forces?
Question
When entering a new material using the Diagram definition type, the first row is locked. How can I define the material?
Question
I have generated a surface from a restrained pipe cross-section. Now, an error message appears after the calculation, saying that the nodal loads and nodal supports are not connected. What should I do?
Question
In RSTAB, I would like to enter a rigid modulus of subgrade reaction for the translational, shear, and torsional springs. Which values do I have to define?
Question
How can I model several simply supported beams in a row in CRANEWAY?
Question
How can I assign a model file, which is currently not assigned to any project, to an existing project?
Question
The results of my model are available and displayed graphically, but without result values. How can I display the result values?
Question
Where on the foundation is the load applied in the design with FOUNDATION Pro?
Question
I can no longer open the dialog box to enter the soil profile in FOUNDATION Pro. Why?
Question
The characters "<" and ">" are no longer displayed on my PC. Instead, I get wrong symbols (circles) for design ratios in the add-on module or in the printout report. Could you tell me why?
Question
I have a SHAPE‑THIN 9 license, but I cannot transfer the created cross-section into the RFEM program. What is the problem?
Question
Why does an eccentric member receive axial forces, although it is only loaded by shear forces?
Question
In my model, the members are connected to each other diagonally. Is it possible to assign an oblique cut to the member ends?
Question
How do I get the actual member length of cables, for example, after the calculation in RF‑FORM‑FINDING?
Question
What are the advantages in terms of graphical rendering speed if I enable OpenGL hardware acceleration? What does it look like when using virtual machines?
Question
How can I consider eccentric load introduction for surfaces?
Question
How can I create member eccentricities in RF‑COM?
Question
How can I create member eccentricities in RS‑COM?
Question
Is it possible to combine several load cases in one load case?
Question
Is it possible to create RFEM/RSTAB files in Tekla without having an RFEM/RSTAB license?
Question
How can I model a surface as a quarter-circular ring with variable thickness from the inside to the outside?
Question
Is it possible to use the table to evaluate which member has the greatest internal forces in relation to other members?
Question
How can I centrically align the coordinate system of a surface?
Question
I have defined a notch on a support. Why is it not taken into account for the reduction factor kv?
Question
How can I rotate a nodal support?
Question
Are the minimum moments also considered in the case of punching shear on foundation plates?
Question
When opening Block Manager, the following message appears: "Project folder is not valid! Folder X of project Y cannot be found!"
Question
How can I find members of a certain length?
Question
Is it possible to import and edit the cross-sections created in older program versions of SHAPE‑THIN?
Question
I get a message in RF‑/PLATE‑BUCKLING saying that the distance between stiffeners exceeds the minimum requirement. What should I do?
Question
I have downloaded the installation of the RFEM program and I would like to try the program as a demo version first. Unfortunately, the program cannot be saved. What am I doing wrong?
Question
Why is it not possible to select the connecting surface under "Integration Width - Side 2" in the "Edit Rib" dialog box?
Question
I would like to use the "Insert Pages Before Block" function in the printout report. Unfortunately, this does not work: In the table of contents, the inserted empty pages are listed and considered by page, but the pages are not available.
Question
In Project Navigator - Display, I have set the "With Diagram" option for displaying the results of members. However, the results are displayed without the diagram. Why?
- 004541
- RFEM 5
- RFEM 2D 5
-
- RSTAB 8
- RSTAB 2D 8
- RX-TIMBER Glued-Laminated Beam 2
- RX-TIMBER Roof 2
- RX-TIMBER Purlin 2
- RX-TIMBER Continuous Beam 2
- RX-TIMBER Frame 2
- RX-TIMBER Column 2
- RX-TIMBER Brace 2
- PLATE-BUCKLING 8 | Stand-Alone
- SHAPE-THIN 8
- SHAPE THIN 9
- CRANEWAY 8
- COMPOSITE-BEAM 8.5x
- Concrete Structures
- Steel Structures
- Timber Structures
- Structural Analysis & Design
- Finite Element Analysis
- Nonlinear Analysis
- Stability Analysis
- Warping Torsion Analysis
- Dynamic and Seismic Analysis
- Steel Connections
- Eurocode 3
Question
What is the difference between the dongle drivers of CRANEWAY and RFEM or RSTAB?
Question
How can I change the shear correction factor kcr in RF‑JOINTS Timber - Timber to Timber?
Question
I have modeled a deep single-span beam as a surface. Why are no bending moments displayed after a successful calculation?
Question
Are the models and presentations from Info Day 2017 freely available, and can you send them to me?
Question
How can I import an STL file in the desired scale in RWIND Simulation?
Question
How can I display the load distribution of RWIND Simulation in RFEM?
Question
An error message appears saying that the CTL.dlp file was not found. What can I do?
Question
I can no longer find a cross-section from an older version. Has this been removed?
Question
How can I define an average region on pipes over the entire circumference?
Question
When entering data in the RF‑/STEEL EC3 add-on module, I get the error message "Incorrect location of the intermediate lateral restraint". Why?
Question
How can I represent stresses on cross-sections in RFEM?
Question
How can I deactivate the individual members for the calculation, for example, to simulate a column failure?
Question
How can I protect a user-defined block from being accidentally changed?
Program Packages
Can I compile special program packages at Dlubal Software?
Question
How do I register for online training by Dlubal Software, and can I pay by credit card?
Question
I am trying to verify RF‑CONCRETE Surfaces based on the results of the example in the manual. Chapter 2.4.3 describes the determination of the statically required reinforcement. Unfortunately, I cannot create an example that exactly represents these results. Can you send me the corresponding example?
Question
How can I quickly transfer a load from one load case to another? I entered my loads into an incorrect load case by mistake.
Question
In connection with the analytical SLS calculation, I get implausibly large values for the crack width and deformation in the RF‑CONCRETE add-on modules. What is the cause, and how can I fix the problem?
Question
How can I adjust the wind tunnel to the model in RWIND Simulation?
Question
Is it possible to insert an additional comment at the edge of a printout report?
Question
Where are the RWIND Simulation projects created by RFEM/RSTAB saved?
Question
When calculating a result combination, I get a message about an error in the result combination. Also, this RC is no longer selected for design in the RF‑STEEL EC3 add-on module and is displayed in red. What can I do?
Question
In the manual is a dialog box that shows six options: Load Cases, Actions, Combination Expressions, Action Combinations, Load Combinations, Result Combinations. However, I have only three options to select. How do I get the six options displayed?
Question
After starting the calculation, the program gives Error No. 10417 for Surface Load 3. What can I do?
Question
What does the "Calculate grid points result values for graphics" option set?
Question
My RFEM file includes some RWIND Simulation load cases. After deleting the FE mesh, these load cases are no longer available. However, these load cases are still available in the automatically generated combinations and I get an error message when starting the calculation. What can I do?
Question
In RWIND Simulation, I imported neighboring buildings and terrain to consider them. When performing a new calculation in RWIND Simulation, started from RFEM, these data are no longer available. What can I do?
Question
I need to enter a load on a surface with a circular ring shape. How do I achieve this?
Question
Can I define nonlinear supports using tables?
Question
Can I define nonlinear support conditions via the COM interface?
Question
For a combined cross-section in SHAPE‑THIN, the shear area Ay is larger than the total cross-sectional area A. How is this possible?
Question
The network license includes both 2D and 3D licenses of RFEM/RSTAB. How can I ensure that I use the 2D version and not the 3D license?
Question
In RF‑/JOINTS Steel - DSTV, I get the notes "Wrong geometry" and "Invalid material". Which entries do I have to adjust?
Question
When opening an RFEM file, the entries in RF‑CONCRETE Surfaces are lost. Is this possible?
Question
How can I display the results from RF‑PUNCH Pro exactly in the critical perimeter with a result value?
Question
I have created automatic load combinations according to EN 1990 + 1995 (CEN). Although Ψ2,1 = 0, factors greater than zero are applied for wind and snow. Is this a program error?
Question
Which license models are available for the RWIND Simulation program?
Question
How do I find the non-designable locations in the work window?
Question
How can I keep the number of mesh elements in the model low for the numerical flow analysis despite a very fine model contour?
Question
How can I consider the flexibility of adjacent objects that have no line release?
Question
I am using automatic combinations, but some load cases are not used in the generated combinations. How can I change this?
Question
How can I open and close RFEM/RSTAB in the background via the COM interface?
Question
I have entered cross-sections U180 and a flat steel 30 x 300. Unfortunately, I cannot connect the cross-sections together, and no related cross-section is calculated.
Question
Is it possible to export the results from RF‑CONCRETE Surfaces to Excel? For example, I would need the steel stress of serviceability design.
Question
Where can I find the details of a layer composition in the RF‑GLASS add-on module?
Question
Is it possible to take a user-defined National Annex as a basis for concrete design?
Question
Is it also possible to specify a cable length in RF‑FORM‑FINDING?
Question
Where can I find information about the preset limit values for a deformation analysis in the STEEL EC3 add-on module?
Question
How can I transfer the shear at the interface between concrete cast at different times to a printout report?
Question
I am performing fire resistance design in RF‑/CONCRETE Columns. To which source does the design formula according to Section 5.8.8 refer?
Question
Why is a trapezoidal but no triangular load displayed for a surface load with a linear load distribution (from 0 to 50 kN/m²)?
Question
Is it possible to adjust the initial values of the temperature courses entered for the fire resistance design? For example, I would like to adjust the initial value of the moisture content.
Question
I am designing a steel column footing in the RF‑JOINTS add-on module, but I cannot change the number of anchors. How do I make this drop-down menu available?
Question
Is it possible to insert an external image in the printout report?
Question
When designing a plate, I get different reinforcements in different load situations with the same bending stress. What can be the reason?
Question
Regarding nonlinear analysis of reinforced concrete, is there any feature in the program that increases the load until failure? Or is there any way to describe the load increment until failure?
Question
Where can I download the current program version?
Question
Which load direction should I select for members and surfaces in the case of a wind load?
Question
I have calculated a pre-deformed structure according to the second-order analysis with RF‑STABILITY and RF‑IMP. Why are the deformations of the CO smaller than the applied pre-deformation?
Question
How can I use springs for nodal supports in the design of sets of members in RF‑/STEEL EC3?
Question
I cannot find an add-on module. How can I quickly open a specific add-on module?
Question
Where can I find the RF‑CONCRETE NL add-on module? How can I activate it?
Question
How can I display the stresses of a surface via RF‑COM?
Question
Is it possible to use a cross-section from SHAPE‑THIN 9 in older versions of RFEM or RSTAB?
Question
How are the total loads and the total moments around the zero point calculated for the different load generation?
Question
How can I design a ribbed plate in state II with RF‑CONCRETE NL and use the stiffness export from the add-on modules for this?
Question
RF-/DYNAM Pro - Equivalent Loads includes the result tables "5.8/5.9/5.10 - Equivalent Loads". Which sum is displayed in the case of the "All mode shapes" option?
Question
When entering the geometry of a ribbed timber plate, I always get error message No. 30343: "The computed stiffness matrix is not positive definite". How can I define the surface?
Design of Provided Reinforcement
Can I define a beam with a specific reinforcement in RFEM 5 and then obtain a design of that reinforcement including the design ratio?
Question
Why are a fully plastic section modulus Zfull and a maximum plastic section modulus Zmax displayed for some cross-sections?
Question
How can I activate a software license ?
Question
How can I display wind speeds at a certain height above the ground for a wind comfort analysis?
Question
In the case of sections, no smooth line is displayed for result combinations. What can I do?
Question
I have generated a load from an area load on a circular opening. If the radius is 1.0 m and the load is 10 kN/m², the resultant should be 31.416 kN. The recalculated load on the line should be 5.0 kN/m. However, the value of the converted load is 4.968 kN/m. Why?
Question
I would like to design a glass pane with temperature loads. In this case, a message appears saying that the load case includes "temperature" surface load types that are not transferred to the created temporary model. How can I consider temperature loads?
Question
I have a circular surface with symmetric loading. However, the results are unsymmetric. What can be the reason?
Question
How is it possible to create the cutting pattern geometry for a decorative sticker on a biaxially curved membrane roof?
Question
After importing loads from another model, Warning No. 11003 appears. Some free loads are obviously perpendicular to the projection plane. What can I do?
Question
How can I delete a license?
Question
How can I create a solid of revolution?
Question
I would like to enter a reinforced concrete beam that is wider at the bottom side than at the top side. Do I have to define two separate beams and couple them? Or is there a special type of cross-section?
Question
I have a model with solids; the calculation reports a singularity. How do I fix this model?
Question
Is it possible to display natural frequencies separately for each direction?
Question
I am performing a stability analysis of a beam for lateral-torsional buckling. Why is the modified reduction factor χLT,mod used in the design according to DIN EN 1993‑1‑1, 6.3.3 Method 2? Is it possible to deactivate this?
Question
Is it possible to extrude a surface into a solid along a curved line or circle?
Question
How can I create a load arranged in a checkered way?
Question
What flow model and type of analysis are used in RWIND Simulation?
Question
How is the plastic torsion determined in the plastic hinge definition?
Design of Sets of Members According to Eurocode 3
I cannot define effective lengths for the design of a set of members in STEEL EC3. Am I doing something wrong?
Question
How can I retrieve archive files?
Question
I want to have an image in the print protocol with the resolution of surface thicknesses using colors. For an unknown reason, I cannot display colored areas by dimensions when printing. How can I fix this?
Dynamic Second-Order Analysis
Is it possible to consider the second-order theory in a dynamic analysis in RSTAB?
Question
I cannot open the printout report. The program crashes and an error message appears. How can I fix this?
Question
Which operators should I use to get the best results when searching in the FAQs?
Question
How do I enter member elastic foundations? The question arises for a bored pile that is oriented in the global Z-direction and has different horizontal foundations in the global X- and Y-directions.
Question
Is the "extended zone method" used for the fire resistance design in RF‑CONCRETE Columns?
Question
My model includes several columns with different cross-sections. How can I assign the reinforcement of the column with the maximum loading to the columns with the same cross-section?
Question
How can I add a line grid to visibility?
Question
Is there any option to remove the calculated results so that the file will take less space when it is stored?
Question
What is the meaning of a "main load" and "secondary load" in RF‑PUNCH Pro, and where does this load come from?
Question
How can I change the thickness of surfaces made of OSB boards?
Question
Is it also possible to specify a certain basic reinforcement in RF‑/CONCRETE Columns and use it for the buckling or fire resistance design?
Question
How can I create a user-defined visibility?
Question
Do I have to add the reinforcement for ribs from RF‑CONCRETE Members and RF‑CONCRETE Surfaces?
Question
How can I model a plane frame that is self-rigid and hinged to columns?
Interchangeability of models between RFEM and Rhino
When I try to export/import a model between RFEM and Rhino, I get an error regarding RF-COM. "Export Error: Error to write data, message: The demo version of RF‑COM allows models with a maximum of 12 members, 2 surfaces, and 2 solids only". How do I fix this?
Question
Where can I define a wind velocity diagram according to a specific wind standard for the numerical wind tunnel analysis in RWIND Simulation?
Question
I have entered a line hinge within a surface. Does it matter whether the surface at the line hinge is divided or not? I have noticed some differences in the results.
Question
Is the compression reinforcement calculated for the ultimate limit state design in RF‑CONCRETE Surfaces? Or is it only possible in RF‑CONCRETE Members?
Question
Where can I set partial safety factors for design in RF‑CONCRETE Members?
Ellipse
How can I enter an ellipse in RFEM 6?
Question
How can I select members that have a certain material?
Question
Why does the form-finding not work for the "Cable on Pulleys" member type?
Question
Which formula is used in the RF‑/TOWER Loading add-on module to calculate the first natural frequency for the determination of the structure coefficient?
Question
When applying for a student license, can I attach my ISIC card with a valid stamp instead of a study certificate?
Question
Is it also possible to create members when importing a DXF file into RFEM?
Importing dxf File
Is it also possible to create members when importing a DXF file into RFEM?
Question
Is it possible to enlarge the work window of an add-on module for a better overview?
Question
I opened RFEM Viewer 5.18 (old version) to read a file with the results saved in RFEM 5.22 (current version), but I cannot display the results. Is this normal?
Virus scanner
Editing in RFEM is slowed down significantly, as the update of the navigator takes a very long time. How can I prevent this?
Question
Can RF‑STEEL AISC optimize cross-sections for serviceability?
Question
How can I change the color selection for the min and max values? I cannot select these options in the panel.
Question
I am going to buy a second monitor. Can RFEM or RSTAB handle this?
Question
The RF‑CONCRETE Surfaces add-on module designs all surfaces in the model. How do I design only the selected surfaces?
Question
Why are all guidelines stored under the "1: XY" entry in Project Navigator - Data?
Question
In the cross-section library, I get an error message saying that the material is not assigned to a cross-section. What should I do?
Question
My network license does not work on my computer, although it works for my colleagues. How can I get the license to work?
Question
How can I automatically generate result combinations?
Question
It is not possible to design a SHAPE‑THIN cross-section due to invalid symmetry. What is the cause and how can I fix it?
Reactivating Expired Trial License on Single-User Computer
How can I reactivate an expired trial license of RWIND Simulation on a single-user computer?
Question
The *.dll and *.tlb files specific for COM were obviously not updated correctly, which has caused problems. What can I do?
Question
Can I change the cutting angle for the "Main member only" joint type?
Question
How can I create a section via the COM interface?
Question
Is it possible to control the beam steering of an antenna in RF‑/TOWER Design?
Question
In RF-/TIMBER AWC and RF-/TIMBER CSA, I receive the Error 49927 and Error 54089 respectively which says the cross-section is not permitted. Why can I not design this section in the add-on module?
Question
How can I set the font type and font size of the values in the result diagram?
Question
How can I access the RWIND Simulation program from RFEM, assuming that it is possible to transfer a 3D model created in RSTAB?
Question
When I see a message saying that distorted FE elements have been found, how can I find out their exact location? These areas cannot be detected at first glance.
Question
I would like to display the deformation of different load combinations with the same display factor; is this possible?
Question
Where can I see which user has worked with the RFEM or RSTAB file?
Question
When creating a material, there are no nonlinear material models available for surfaces or solids. Why?
Question
When creating an FE mesh for a solid, I get Error No. 2306: "Surface boundary is not closed at edges XX".My solid has openings in the boundary surfaces. How can I solve the problem?
Question
How are the properties of the elasticity and shear modulus of a membrane fabric with the usual force/length syntax transformed into the general force/surface syntax to be entered in RFEM?
Question
Is it also possible to check the punching shear on vertical walls?
Question
How does the calculation of the moments of inertia differ when the cross-section consists of several unconnected or connected partial cross-sections?
Question
Is it also possible to manually enter the load for the punching shear design in RF‑PUNCH Pro?
Question
Where is the setting for displaying an axis system in the graphic window?
Question
Does RWIND Simulation apply a boundary layer model?
Question
I would like to use the CRANEWAY add-on module to design a suspension crane. Where are design points 0, 1, and 2 for the stress analysis on the bottom flange and for the fatigue design?
Creep-Producing Permanent Load
Why can I specify a "creep-producing permanent load" in RF‑CONCRETE Columns but not in RF‑CONCRETE Members?
Question
The surface results are displayed in a 500 mm grid. However, the governing value is not considered. How can I change the grid distance?
Question
The attempt to print the window filling shows that there is much more space in the printout report for the graphic. Is it possible to change this?
Question
How can I create a PDF file from a printout report?
Question
How do I influence the x-locations in the result tables for members?
Question
I can no longer select, move, or delete my line grids. Can you help me?
Question
Why is the imperfection always displayed graphically with a displacement at the column base?
Question
How can I control the wind load distribution on tower sides in the RF‑/TOWER Loading add-on module?
Question
Can RF‑TIMBER AWC optimize cross-sections for fire design?
Question
What is the formula used to calculate the ASCE 7 wind velocity profile?
Question
I have manually defined a snow load of 5 kN/m² in the RX‑TIMBER program. However, the calculation uses a load of 4 kN/m². Why is the defined snow load not applied?
Question
In the case of member loads, the loads are entered in Table "3.2 Member Loads". I can view or change the values.In my model, I have applied generated loads. Should the member loads not also be visible in Table "3.15 Generated Loads"?
Question
I have applied strict numbering of the objects to a global spatial model. However, the "Visibility by Numbering" function only allows me to display either surfaces or members by their numbering. How can I display members 50 to 70 as well as the surfaces numbered in the same area in one visibility?
Question
In my printout report, I noticed that the internal forces of the members are not recorded completely in Table 4.1 for the result combinations. How can I set this correctly?
Question
What is the effect on the internal forces if I limit the number of iterations to "1" in the calculation parameters?
Question
How can I change or parameterize the radius of a circular line?
Question
What is the difference between the add-on modules RF‑/FOUNDATION and RF‑/FOUNDATION Pro?
Question
How can I simulate the friction between a floor slab and a foundation without having to enter a contact solid?
Question
When trying to import a model from AutoCAD into RFEM, I am getting the error message: "3DSOLID or REGION entity detected. Those entities are written in binary format, so import is not possible." What does this mean?
Question
I have defined a nonlinear line support with failure. Implausible results are displayed during the result evaluation. What can I do?
Question
When displaying my reinforcement, I use the "Values on Surfaces" option in the Results navigator. Is it possible to display additional information for the values?
Question
Where is it possible to download the previous program versions of Dlubal Software?
Question
Is it possible to apply the minimum bending moments according to DIN EN 1992‑1‑1 in RF‑PUNCH Pro?
Question
Is it possible to transfer only a specific selection of elements to the wind tunnel in RWIND Simulation?
Question
I cannot graphically display a variable polygon load on a surface correctly. It is not clear which load is actually applied. Is there any display option for this?
Question
When importing an .stp (DSTV) file that I exported to RFEM/RSTAB, I get the error message shown in the image. No cross-sections are exported. Why?
Question
Why do I get message 28) in RF‑CONCRETE Members saying that I have to make a "calculation without second order effect" with the internal forces according to the geometrically linear analysis?
Question
Is it also possible to transfer loads and load cases using the .stp interface (regulated according to DSTV)?
Question
Why is the material property in the program different from the material property in the current standard?
Question
According to which regulation or standard are composite beams designed in the program COMPOSITE‑BEAM 8.xx?
Question
Can I also use the horizontal branch of the stress-strain curve for cross-section design in RF‑CONCRETE Members?
Question
I have installed SHAPE‑THIN 9. Now, I get a warning message that the authorization failed. The program is only available as a demo version.
Question
How do I activate or run RF‑/STEEL Cold-Formed Sections?
Question
I have a node subjected to a concentrated load, but I cannot select it for the design in RF‑PUNCH Pro. Why?
Question
I would like to design a cross-section in RF‑/STEEL Cold‑Formed Sections that is not contained in the cross-section library of RFEM/RSTAB. What should I do?
Question
Is there an option to add an index (for example, "a") to the page numbering in a printout report?
Question
How do I create a user-defined material in the RX‑TIMBER program?
Question
When rotating the view, it seems that the coordinates X and Y are reversed. Is there a display problem?
Question
What is the difference between the Nonlinear Elastic and Nonlinear Plastic 2D/3D material model?
Question
Where can I activate the reduction of shear forces or moments on a support in RF‑CONCRETE Members?
Neutral Axis and Depth of Neutral Axis
Where in RF‑CONCRETE Members can I display the location of the neutral axis or the neutral axis depth of concrete for a cross-section?
Question
How can I reactivate my softlock?
Question
The stiffness has been modified for surfaces, members, or cross-sections, but this is not considered in the calculation. How can I activate the modification for the calculation?
Question
Why is an opening not taken into account when determining the punching load due to shear forces in the critical perimeter?
Question
I need to analyze a building by floor. Is it possible in RFEM to insert the support forces of a calculated model into a new model as loads?
Question
For the connection design, I would like to display the resulting internal forces at the start and end nodes of the beam in a table. However, the beam consists of several members, which leads to a very confusing tabular display. How can I optimize it?
Question
Where can I subsequently reverse the global axis system (direction of the global Z-axis)?
Question
Why do I obtain such high contact stresses at the foundation edges of my floor slab?
Question
Is it possible to perform fire resistance design of cross-laminated timber panels in RF‑LAMINATE?
Question
Is it possible to perform automatic live load reduction in RFEM or RSTAB per the ASCE, IBC, or NBCC?
Question
When opening the project manager, the following message appears:
"Project folder is not valid! Folder X of project Y cannot be found!"
Question
Is there an add-on module for the automatic generation of action combinations?
Question
Is it possible to generate a parts list in RFEM?
Question
After dividing a column with intermediate nodes, the results in the RF‑/CONCRETE Columns add-on module are different from those before the division. What can be the reason?
Question
How can I create standardized printout reports and use them as a template on other computers?
Question
Which time step should I select for calculation of the time history analysis in the RF‑/DYNAM Pro add‑on module?
Question
What target length of finite elements is generally recommended?
Question
How can I load the authorization file (AUTHOR.INI) in the RX‑TIMBER add-on module?
Question
Do I have an opportunity to consider cross-section reductions due to drilling or the like without having to remodel the cross-section in the SHAPE‑THIN program, for example?
Question
How can I consider the flexibility of a continuous beam with slotted dowel connections?
Question
Is it possible to perform a detailed analysis of connections, supports, or reinforcements of cross‑laminated timber plates in RF‑LAMINATE?
Question
What are the purchase options for acquiring Dlubal Software?
Add-on Modules for RFEM 5 and RSTAB 8
Are all add-on modules for RSTAB 8 also available in RFEM 5?
Question
In RF-/DYNAM PRO - Forced Vibrations, why does my time diagram function formula output incorrect values which appear to be off by only a factor?
Question
Why are the intermediate results for some members exactly at the member end node in the result table of member internal forces?
Question
I have set a variable load distribution for a generated load. This should be applied incrementally in a certain direction. However, the load is not stepped, but is displayed with a linear distribution. How can I display the load correctly?
Question
When displaying the result diagrams on a member (the "rib" type), there is the option to display the internal force VL. What is this value and how is it calculated?
Question
Where can I set the Poisson's ratio?
Question
Can I transfer the loads when copying structural systems?
Question
Are network or floating licenses available, and how is the surcharge calculated?
Question
What does CS271) ... or ST320) ... mean, or how can I create a connection to the standard?
Question
How can I change the name and description of my model retroactively? How do I get back to the "General Data" dialog box?
Question
I am designing a combined structure made of timber materials with different creeping parameters. How can I perform the serviceability limit state design according to EN 1995‑1‑1?
Question
When trying to perform a calculation, I get the message "The path to RWIND Simulation working directory cannot contain any non-ASCII characters". What can I do?
Question
What can I use a result beam for?
Question
I cannot fully understand the spring constants for foundation beams and piles. Do these parameters of translational, shear, and rotational springs relate to the stiffness modulus (MN/m²) or the subgrade reaction modulus (MN/m³)?
Question
I need to define different types of lateral intermediate restrains for a single element in RF-/STEEL EC3. Is this possible?
Question
After running the design in RF‑STEEL AISC, I receive error message 1002 - Invalid cross-section of type "Channel" according to F2. What does this error mean?
Question
When trying to calculate the design in RF‑STEEL Surfaces, I receive Warning No. 1162 - Surface No. XX is of the type "Orthotropic" and cannot be designed. What does this warning mean?
Question
What is the fastest way to make sure that the load combinations generated by the program are calculated according to the geometrically linear analysis, for example?
Question
How can I calculate only specific load cases, load combinations, or result combinations using a command with the COM interface?
Question
Unfortunately, the export to Tekla Structures 2019 SP2 does not work. What can I do?
Question
How can I simulate buildings with window openings as a closed unit in RWIND Simulation?
Using Facade Surfaces in RFEM for Transmission of Wind Loads to Main Structure
Are there any facade surfaces in RFEM to transmit wind loads to the main structure?
Question
Where in RWIND Simulation can I highlight the locations with the maximum and the minimum surface pressures on the model?
Question
RFEM shows a warning message saying that the intersection is not defined correctly. How can I avoid this?
Question
In RWIND Simulation, I would like to rotate the model, adjust the wind tunnel, then rotate the model again. How can I prevent the rotation point of the model from being changed?
Question
How can I insert my own text in the printout report and change its format?
Question
Is it possible in RFEM or RSTAB to define a nodal support in such a way that it does not absorb any lifting forces?
Question
I divided a member by several nodes. When applying the imperfections, each partial member is now assigned its own imperfection.How can I define an imperfection over all partial members?
Buckling Panel of Member
Is it possible in the PLATE-BUCKLING add-on module to transfer the member geometry as a buckling panel and its internal forces?
Question
I cannot select, copy, move, or delete my guidelines. Can you help me?
Question
How is coupling stiffness determined in RF‑GLASS?
Question
A curved pane cannot be designed in RF‑GLASS. Why?
Question
When generating the FE mesh of an ETFE cushion, some problems occur. I cannot find any mistakes. What can I do?
Import of Buckling Panel
When starting PLATE‑BUCKLING as a stand‑alone program or as an add‑on module within RFEM/RSTAB, the "from RFEM" or "from RSTAB" button is grayed out.
Question
How can I change the scale for a graphical display of member loads or the distance of a load from a member axis?
Question
How can I define a plane calculation for a two-hinged frame to avoid defining supports in the Y‑direction?
Question
The table window (or the Project Navigator) is not displayed anymore, although the corresponding button is activated. How can I solve this problem?
Question
During the plausibility check, I get an error message saying that one or more polyline segments overlap each other. How can I fix this?
Question
How can I create a comment via the COM interface?
Question
After running a time history analysis, I am not able to see all results on surfaces. Is there a possibility to show them?
Question
How can I add small members perpendicular to a surface?
Question
Which graphics card is recommended by Dlubal Software?
Question
For the support forces of a result combination, the maximum component is equal to zero. This cannot be right. The minimum force is all right.
Question
How can I change the header?
Question
When I want to select the imperfections, the message "Eigenvector results were not found" appears. Why?
Question
I have defined a pre-deformation in RSTAB. If FE‑LTB takes over the loads, why not the imperfection?
Scissor Hinge
When opening an RSTAB 8 file including scissor hinges in RFEM 5, I get an error message saying that the scissor hinges cannot be imported correctly. What is the problem?
Question
In RF‑CONCRETE Surfaces, I get non-designable situations with a note saying that the shear resistance cannot be checked (cross-section entirely cracked). What is the reason for this message?
Question
Which shape function is used in RFEM?
Question
How can I remove a web stiffener or an end plate for the connection design in the FRAME‑JOINT Pro add-on module?
Question
Are the Revit and Tekla models that you've shown in "Webinar 3: BIM Integration and RFEM" available for free use and can you send them to me?
Question
I would like to model a threaded rod as a 3D solid in RFEM. Is this possible?
Question
In RF‑FOUNDATION Pro, I get Error Message No. 30195. What can I do?
Question
Is it possible to perform stability analyses on reinforced concrete structures by means of RF‑STABILITY?
Question
Does it make any difference if I model a flush beam as a "Rib" or as a "Result Beam"?
Question
How can I remove the blank rows in the RFEM/RSTAB table window without deleting every single row?
Question
I am comparing the flexural buckling design according to the equivalent member method and the internal forces according to the linear static analysis with the stress calculation according to the second-order analysis, including imperfections. The differences are very large. What could be the reason for this?
Question
Is Dlubal Software certified according to ISO 9001, and where can I find the corresponding certificates?
Question
How is it possible to control in RF‑LOAD‑HISTORY whether the deformations of the individual load steps are determined separately in each load step, or added?
Question
Can I connect a rib member with two surfaces that have different thicknesses? And where can I check the cross-section properties of this composite cross-section? In RFEM, I can only see the eccentric rectangular cross-section and its cross-section properties.
Question
Is it possible to display the isoband representation as single-colored and transparently?
Question
Why is it always displayed during the calculation that the program performs a nonlinear analysis?
Question
Is it possible to create a table of contents in the printout report?
Question
Why does the direction of a cutting pattern edge line in the support area change abruptly?
Question
In the calculation parameters of a load case or load combination, it is possible to activate various stiffness factors. What exactly is behind this?
Question
I have a problem that some members in my sets of members are twisted. Why is that, and how can I solve it?
Question
Is it possible to copy line releases?
Question
What are the options for further processing of a printout report in Word or as a PDF document?
Question
Is it possible also to access the online service "Snow Load, Wind Speed, and Seismic Load Maps" digitally via API or Webservice?
Question
Is it possible to display the SHAPE‑THIN printout reports with a cross-section graphic and cross-section properties, and include it in the RFEM or RSTAB report?
Question
During a training session, we demonstrated how to enlarge the display box for load case descriptions. Could you please explain it again?
Question
How can I avoid singularities in the case of point loads?
Question
In Window "1.4 Longitudinal Reinforcement", there is no "multiple selection" of surfaces.I have to edit the concrete cover for many connected surfaces. Is there a tool available for this?
Trapezoidal Panel
Is it possible to use the PLATE‑BUCKLING add-on module for the design of tapered members or trapezoidal panels?
Question
When I define an elastic foundation, is there any possibility to make the springs for tension or compression fail?
Question
What should be considered when determining weld stresses at surface interfaces?
Question
How can I quickly create a contact solid between two contact surfaces in RFEM?
Question
Are there any manuals for Dlubal Software programs?
Question
Is the update installed over the old version? Or is a parallel version of the program created?
Question
Are there no longer any 32-bit versions of RFEM or RSTAB?
Question
I have purchased the RF‑/JOINTS add-on module. After importing the new authorization file, only the demo version is available. Why?
Question
Does the software RWIND Simulation account for the internal pressure coefficient (GCpi) from the ASCE 7‑16?
Question
How do you perform a lateral-torsional buckling analysis for asymmetric steel cross-sections?
Question
I have installed the Dlubal Software programs with add-on modules as an Administrator. On this account, the programs run without any problems. However, if I sign in as a User on my computer, I can no longer access the Dlubal Software programs.
Question
Why are the contact stresses of members with elastic foundations given in [kN/m]?
Question
Is it also possible to calculate cable structures in RFEM and RSTAB?
Question
Is it possible also to design smaller structural components such as GFRP angles in RF‑LAMINATE?
Question
I cannot find the authorization file on the dongle.
Question
I would like to connect a column rigidly to a girder flange. However, in the RF‑/JOINTS Steel - Rigid add-on module, beams are always connected to a column flange. How can I create a continuous beam?
Question
For a defined free rectangular load, the selected projection plane of the load does not correspond to the load direction visible in the graphic.
Question
Can I also apply user-defined loads in RX‑TIMBER?
Question
How can I edit the image in my printout report so that the description of color scale or the cross-sections are legible?
Question
Is it possible to read out the values from a table to use them for a parametric input?
Question
How can I transfer a softlock network license to another server?
Question
Will other standards be added to the wind profile generation options in RWIND Simulation?
Question
Is the Gust-effect (G or Gf) from the ASCE 7‑16 Sect. 26.11 considered in RWIND Simulation?
Question
Is it possible to design member groups using the EC3 add-on module?
Question
When using the "Import Support Reactions as Load" tool, not all loads are imported.
Question
As of which RFEM or RSTAB version is it possible to export the models into RWIND Simulation?
Question
How can I set the printout report to display only the resulting internal forces of the load combinations and not the load cases?
Question
In the printout report, A4 is not preset as the page size. What can be the reason?
Question
After a few days of operation, the activated softlock license, student license, or trial version cannot be run due to a license problem. On some computers, the message "Virtual machine detected" appears.Why?
Question
What should be kept in mind when using a NET softlock?
Question
Why are new members generated in my model when crossing one member with another one?
Question
Is it possible to perform a dynamic analysis of the initial deflection of a structural component in RFEM or RSTAB?
Question
When entering surface loads, it is possible to enter a correction factor to consider the effects of continuity. For the external members or supports of a continuous beam, the factor 0.8 is entered in the model that I have from my colleague. Should the factor for the external section not have to be 0.4?
Question
What is the meaning of "Shear failure in glued contact surface" in the details of the RF‑LAMINATE add-on module?
Question
When installing the program, a message appeared: "An error occurred while trying to create the C:\Users\Public\Documents\Dlubal directory". How can I solve this?
Question
According to DIN EN 1995‑1‑1/NA, the crack factor kcr may be increased by 30% for softwood in areas that are at least 1.50 m from the timber grain plane. How is it possible to apply this in RF‑/TIMBER Pro?
Question
How can I retroactively change the cross-sections of a tapered beam consisting of several members?
Authorizing RWIND with Hardware Key
How can I authorize the RWIND Simulation program with a hardware key on a single‑user computer?
Question
Is it possible to use the RF‑/STEEL EC3 add-on module itself to specify the internal forces, for example, from another calculation or program?
Question
Is it possible to use the RF‑/STEEL AISC add-on module itself to specify the internal forces, for example, from another calculation or program?
Extending RWIND Software Key Activation Period Online Before Expiration
How can I extend an active license of RWIND Simulation based on a software key online before the activation period expires?
Question
I have not succeeded in visualizing the pre-deformations in the rendering mode in FE‑LTB.I only see either the undeformed system or the stress distribution, but never the pre-deformation!
Question
How can I change the scaling of the results in sections in RFEM?
Question
How can I change the spacing between the division lines of sections? The spacing in my model is too big.
Question
In STEEL, it is possible to select the Sigma Delta stress in the details. What kind of stress is this?
Question
Is it possible to display a parts list of a specific cross-section using the STEEL add-on module?
Question
A common imperfection should be applied for several members in a row. Why can I not do this?
Question
I have problems when entering free rectangular loads on inclined surfaces. Do I have to use a different coordinate system for this?
Question
We want to reinforce a floor slab of a round vessel radially or tangentially.Is there a way to calculate not an orthogonal reinforcement, but a radial or tangential reinforcement?
Question
In my structural system, I removed a member subjected to a load. When trying to run a calculation, an error message appears saying that the member does not exist. Is it possible to quickly delete loads that are not used in RFEM/RSTAB?
Question
A high-rise steel structure has several stories and is stiffened by bracings in all stories.However, the first story is made of reinforced concrete. Therefore, the horizontal bracing should work via this concrete slab. How can I model this rigidly fixed concrete slab in RSTAB?
Question
When I increase the plate thickness of a foundation in RF‑/FOUNDATION Pro, the side length changes automatically.How can I turn off this behavior?
Question
In SHAPE‑THIN, I want to connect a free-standing cross-section part by means of a null element with the rest of the cross-section. Graphically, this is no problem. For the calculation, however, SHAPE‑THIN always asks to specify a thickness t* for the shear calculation.
Question
How can I apply the wind load by an angular function to the surface (for example, a grain silo, curved wall, and so on)?
Question
Can I delete the results of models without opening the files and changing certain nodes, for example? The files are stored in different directories.
Question
I need to model a curved wall element with some drilled circular holes in the surface. To create these holes in RFEM, I would normally draw a circle in the wall element to create the opening. But how do I draw a circle on a curved surface?
Question
How can I graphically display the layer direction of the reinforcement in RF‑CONCRETE?
Question
I used the method of intersections to create an opening in a circular cylindrical wall surface.How can I hide these auxiliary surfaces to create an intersection?
Question
Is there any option in RFEM to copy several concentrated loads graphically?
Question
I would like to print a graphic (for example, isolines for the bottom reinforcement) without a color display, but with the isolines labeled with a numerical value.
Question
Is it possible to freely define the numerical values of isoline intervals (for example, result display of the isolines for the bottom reinforcement as1 in steps of 5.0 cm²/m)?
Question
Is there any smarter way than "Copy and Paste" to export result data from tables; for example, to Excel or a text file?
Question
For design in RF‑CONCRETE, I get results split in directions 1, 2, and 3. What is the general definition of the reinforcement directions?
Question
I have entered a steel connection in RFEM and now want to get the results printed. However, the line supports and nodal supports are displayed as larger than the structure. How do I adjust the support size to my structure?
Question
How can I quickly hide and display the guidelines in my model?
Question
I cannot select any member or node in the table in order to select it in the graphic. Is my setting wrong?
Question
How can I consider downstand beams in cross-laminated timber structures?
Question
Why is my cross-section not designable?
Question
Is it possible to save an RFEM file as an RSTAB file?
Question
I am obtaining internal forces I did not expect, as they do not correspond to the release definitions. What is the reason?
Question
When I change the program language or the language of the printout report to Russian or Chinese, some text in the interface of the main program or some paragraphs in the printout report are not displayed correctly. Why?
Question
The calculation of a result combination in STEEL EC3 or ALUMINUM takes a very long time. What might be the cause, and how can I improve the performance?
Question
When starting the program, I get the message DL_Bmpbtn64 WARNING: The version of the ActiveX component DL_Bmpbtn is smaller than the version of the persistent data that is being loaded.What does it mean?
Question
I have designed several reinforced concrete surfaces of my model using the RF‑CONCRETE Surfaces add‑on module, and now I get no results in the display of the required shear reinforcement a-sw in sub‑surfaces. What can be the reason?
Question
Why is it not possible to specify a "favorably acting soil contact stress" at a wall corner or wall end for punching shear design of a floor slab? Where can I find the input option for this?
Question
Does the software RWIND Simulation consider the wind directionality factor (Kd) from the ASCE 7‑16?
Question
What is the effect of the settings "Approach of pure tension restraint", "Approach of bending restraint", or "Depending on the defined load" for the determination of the minimum reinforcement As,min due to restraint?
Question
Which features are available for the data exchange between Grasshopper and RFEM?
Question
How can I change the size of the load arrows?
Question
After importing a CAD model, I encounter some geometrical problems: Some nodes are at a very small distance from each other, so the connection is missing in some locations. How can I unite these nodes?
Question
When starting the program, I get warning No. 10312 "Program authorization failed". How can I start the full version?
Question
How can I enter the earth covering of a bucket foundation up to 10 cm below the top edge of the bucket in RF‑/FOUNDATION Pro?
Question
In the tables displaying the internal forces of members, I can see some x-locations occurring twice with the descriptions "Left" and "Right". What does this mean?
Question
When performing a dynamic calculation, I get the message: "The model has no free mass assigned. Therefore, dynamic calculation is not possible" or "Too many eigenvalues required". How can I calculate mode shapes?
Question
How can I find members lying on top of each other and delete one of them?
Question
Is it possible also to design surfaces with RF‑TENDON?
Design of Masts and Towers
Is it possible to use Dlubal Software for the calculation and design of 5G transmission masts, antenna masts, or towers?
Online Authorization of RWIND with Software Key
How can I authorize the RWIND Simulation program online with a software key on a single‑user computer?
Question
Is it possible to save a file in a previous version of RFEM 5 or RSTAB 8?
Desing in Industrial and Plant Engineering
Are Dlubal Software programs applicable for the analysis of process manufacturing plants?
Question
How can I create an intersection point between a line and a surface?
Offline Authorization of RWIND with Software Key
How can I authorize the RWIND Simulation program offline with a software key on a single‑user computer via email?
Online Deactivation of RWIND Software Key
How can I deactivate an authorized RWIND Simulation license based on a software key on a single-user computer online?
Offline Deactivation of RWIND Software Key
How can I deactivate an authorized RWIND Simulation license based on a software key on a single‑user computer offline via email?
Question
How can I import a parameterized cross-section table into the cross-section library?
Question
I have activated the minimum longitudinal reinforcement in RF‑CONCRETE Members. Will this be displayed in the graphical display of the required reinforcement at the top or bottom?
Question
How can I install the interface to Rhino and Grasshopper?
Question
How can I control an overpressed joint in the ridge?
Question
In Window "1.4 Longitudinal Reinforcement", all the surfaces are always displayed, although I do not want to check punching for all of the surfaces. Is it possible to display only the designed surfaces?
Question
When designing seismic equivalent loads with a Response Spectra Analysis (RSA) in RFEM, how can I apply the modal response parameters Ie/R according to Sect. 12.9.1.2 in the ASCE‑7‑16 to my results?
Question
Are the models and presentations from Info Day 2015 freely available, and can you send them to me?
Question
When performing an analysis in RF‑STABILITY, I get the message "The stiffness matrix is singular! The structure is unstable. Instability found in FE mesh node XY." How can I find this FE mesh node?
Question
How can I transfer a softlock to another computer?
Question
Does the RF‑LAMINATE program consider the shear correction factor for cross-laminated timber plates?
Question
I have designed a reinforced concrete column as a solid and would like to perform punching shear design for the connection of the column to the ceiling. Is it possible to use RF‑PUNCH Pro?
Question
What is the effect of the "Use division for members with nodes lying on them" option in FE Mesh Settings?
Question
I have created new elements in my model. However, they are not being designed. What can I do?
Question
Can I also apply the load generator "From Area Load on Members via Plane" on members that are not in a plane?
Equivalent Stress
Why are there different equivalent stresses in RFEM 5 and RF‑STEEL, although the same CO is considered?
Question
Is it possible to consider the static zero position in a time history analysis?
Geo-Zones - API HASH Code
Where can I get the hash code based on my email address for using the web service function in the background of the Geo-zone tool "Snow Load, Wind Speed, and Seismic Load Maps"?
Question
Is it possible to use high-strength reinforcement or high-strength reinforcing steel in the RF‑CONCRETE add-on modules?
Question
Is it possible to hide the load case description in the graphic?
Question
I have simulated a bored pile using a member, and now I want to simulate the surface friction with a member foundation. Can I also enter this member elastic foundation linearly variable along the height?
Question
I noticed that some tables in the printout report are only displayed on one side, and thus there are empty areas. Is it possible to change that?
Question
How do I create models of neighboring buildings and terrain for a numerical flow simulation in RWIND Simulation?
Question
In spite of having defined average regions, they are not considered in the design in RF‑LAMINATE Surfaces. Which setting did I overlook?
Question
I have a structure with many members. How can I quickly find a member using the member number?
Question
Is it possible to import CAD drawings to RFEM and to convert the drawing into an RFEM model?
Question
I want to rotate a graphic in my printout report by 90 degrees. What is the easiest way to do this?
Question
When trying to calculate a result combination, I get Warning No. 30014:"Incorrect addition of load cases in the result combination!
The result combination contains load cases or load combinations with results according to the second-order analysis, which have nonlinear relationships and therefore cannot be added together."What does this warning mean?
Question
Is it possible for network licenses to see who is currently using a license, and can it be withdrawn?
Question
When importing a file (for example, DXF), some problems arise. A warning appears, and the created file is empty. How can I solve this problem?
Question
Is it possible to perform a Revit export without an RFEM or RSTAB license?
Question
Are direct import and export possible with Autocad?
Question
Which interfaces are available for export?
Question
Why does the "Calculate All" command not calculate the results for the load cases with the "Form-Finding" action category?
Question
Is there a way to prepare an EC3 buckling check without setting the intermediate support manually, or is there a workaround that can speed this up?
Question
What information is transferred when exporting the nonlinear stiffness? Can I display the exported values graphically?
Question
When I import an .stp file into RFEM, a lot of unused nodes appear. How can I avoid that?
Seismic Analysis
What is the approach for seismic design in RFEM or RSTAB 8?
Question
What happens if I activate the "Soil failure" function in RF‑SOILIN?
Question
When editing the load entries, I can select structural objects and even move them with the mouse. Is it possible to disable this?
Question
How can I move a member or a line using Drag & Drop?
Question
I am designing a set of members with a uniform, double-symmetric cross-section and I get the warning "Non-designable: ER051 Moment about z-axis on asymmetric cross-section, taper, or set of members". Why?
Question
Which features are available for the data exchange between Rhino and RFEM?
Question
How can I display the color scale of a graphic in the printout report?
Question
Can I work simultaneously with multiple users on a project in RFEM and RSTAB?
Question
I would like to create a cross‑section consisting of several elements in SHAPE‑THIN. However, I have not succeeded in connecting the elements so that they act as a single entity.
Question
In the model, there are two governing internal forces, Vz and My. In the printout report selection, I have only activated these two internal forces using the "Extreme Values" option. Why are the result lines under "Members - Internal Forces" displayed twice in the printout report?
Question
Which principles are used for the design of the lap length performed in RF‑/FOUNDATION Pro? And can I deactivate this design?
Question
How can I insert a smooth range / smooth line in the result diagram?
- 002546
- RF-STEEL 5
- STEEL 8
-
- RF-STEEL AISC 5
- RF-STEEL AS 5
- RF-STEEL BS 5
- RF-STEEL CSA 5
- RF-STEEL EC3 5
- RF-STEEL Fatigue Members 5
- RF-STEEL GB 5
- RF-STEEL HK 5
- RF-STEEL IS 5
- RF-STEEL NBR 5
- RF-STEEL NTC-DF 5
- RF-STEEL Plasticity 5
- RF-STEEL Plasticity 5
- RF-STEEL SANS 5
- RF-STEEL SIA 5
- RF-STEEL SP 5
- RF-STEEL Warping Torsion 5
- STEEL AISC 8
- STEEL AS 8
- STEEL BS 8
- STEEL CSA 8
- STEEL EC3 8
- STEEL Fatigue Members 8
- STEEL GB 8
- STEEL HK 8
- STEEL IS 8
- STEEL NBR 8
- STEEL NTC-DF 8
- STEEL Plasticity 8
- STEEL Plasticity 8
- STEEL SANS 8
- STEEL SIA 8
- STEEL SP 8
- STEEL Warping Torsion 8
- RF-TIMBER AWC 5
- RF-TIMBER CSA 5
- RF-TIMBER NBR 5
- RF-TIMBER Pro 5
- RF-ALUMINUM 5
- RF-ALUMINUM ADM 5
- TIMBER AWC 8
- TIMBER CSA 8
- TIMBER NBR 8
- TIMBER Pro 8
- Steel Structures
- Wind Simulation & Wind Load Generation
- Eurocode 1
Question
I have modified cross-section properties or reduced stiffnesses of a member in RFEM/RSTAB. After a new calculation, the deformation of the structural system has adjusted itself to the new cross-section properties. However, this change is not taken into account when performing design in add-on modules.
Question
How can I deduce the axial stress and hoop stress of a circular container?
Question
In a model with surface supports, the calculation does not converge, or it results in very large deformations and implausible stresses. Why?
Question
Is it possible to define different stiffnesses for tension and compression between two surfaces in the diagram of a line release?
Question
How does RFEM efficiently determine the shape of a curved plate structure (compression shell) subjected to compression only?
Question
How can I connect surfaces to other surfaces or members in a hinged/semi-rigid way?
Question
Why are the results of the load cases - for example, the load case of dead load - not identical to the first construction stage in the RF‑/STAGES add-on module?
Question
Is it possible to assign identical section or cross-section names with the SHAPE‑THIN program?
Question
What is the meaning of the symbols in the graphical display of mode shapes of the RF‑/DYNAM Pro add-on module?
Question
In the RF‑/DYNAM Pro - Equivalent Loads add-on module, it is possible to consider accidental torsional actions. Which calculation approach is behind the calculation? Which values have to be entered for the eccentricities eX and eY?
Unstable Model
My model is unstable. What can be the cause?
Displaying Equivalent Loads
Can I display the equivalent loads that have been generated by the RF‑/DYNAM Pro – Equivalent Loads add-on module?
Hybrid Timber Cross-Section
Is it possible to display stresses of hybrid timber cross-sections in RFEM 5 and RSTAB 8?
Question
How can I display the contact stresses on a contact solid?
Question
Why is it not possible to select "ULS", "SLS", or "ULS/SLS" for the "required reinforcement"? I can no longer find the selection for this.
Question
I want to design a crack width of 0.1 mm in RF‑CONCRETE Surfaces. But when entering "0.10 mm" as the limit value, I get an error message saying that only a value between 0.2 to 0.4 mm can be designed.
Question
How can I model roundings, chamfers, and so on?
Question
How is it possible to delete load combinations or result combinations?
Question
How can I display the result diagram of a line release or a line hinge?
Question
How can I create a result beam using the COM interface?
Question
Where is it possible to change the display properties of a section contour?
Question
How does RWIND Simulation determine the pressure due to wind load on model surfaces?
Question
In a combined structure made of members and surfaces, I have a frame with beams that have member hinges. The moment diagram of the beams looks strange.
What is the reason?
Question
To what extent are the results of the RWIND Simulation calculation compatible with the valid wind standards (for example, EN 1991‑1‑4, ASCE/SEI 7, and others)?
Question
Why are the line loads generated via "Tools → Import Support Reactions as Load" not distributed polygonally?
Question
I have modeled a simply supported beam with several members. Why are the signs of the shear force diagram partially incorrect?
Question
How is it possible to consider tension members in RF‑/DYNAM Pro?
Question
Is the statically undetermined part of internal forces due to prestressing force considered in RF‑TENDON?
Question
In RF‑CONCRETE Members, I get an error message saying that the steel cross-section is not designable. What is the reason for this message?
Question
How can I introduce releases on the supports in the CRANEWAY program to prevent the effect of continuity?
Design of Piping Systems
Is it possible to analyze and design piping systems with Dlubal Software?
Question
Is it possible to create a video file in RWIND Simulation?
Question
How is it possible to record parameter lists and formulas in the printout report?
Question
How is Young's modulus calculated for the "isotropic damage" material model?
Question
"During the calculation of material non-linearity, the material with a decreasing branch of the diagram can be calculated with one load increment only." Why do I get this error?
Programs for Glass Structures
Are there any programs or add-on modules specially developed for glass structures?
Question
In the case of "free loads", the sum of the loads does not match the sum of the support reactions. Is this a program error?
Question
We have a project for which the complete output is in English. In the printout report, we have changed the language from German to English using "Settings → Language". We have noticed that some terms are not translated. How can we adjust this?
Question
Which theoretical approaches are used in RF‑/FOUNDATION Pro for pocket foundations with rough bucket sides to divide the forces and moments and carry out the reinforcement layout?
Question
The load distribution in RFEM shows unstressed FE elements in the middle of the model for loads from RWIND Simulation. Why?
Question
Is there any option to export/import a combination scheme COMPLETELY?
Question
Can I somehow verify the bending moment from the integration of contact stresses determined in RF‑/FOUNDATION Pro?
Design in Mechanical Engineering
Is it possible to use the Dlubal Software programs for mechanical engineering design?
Question
In spite of having defined smooth ranges, they are not considered in the design in RF‑STEEL Surfaces. Which setting did I overlook?
Question
How many mode shapes do I need to consider in the dynamic analysis?
Question
Is it possible to convert area loads into member loads in RFEM/RSTAB?
Question
How do I manually enter a precamber to a member as an imperfection?
Question
Why is the "Set Wind on Side" section grayed out in the wind load generator after selecting the nodes of the base and roof geometry?
Question
Where can I change the steel grade of a crane girder? Although I have set Steel St 37.2 in RSTAB, only S235 is used for the calculation in CRANEWAY.
Question
How can I adjust inserted cross-sections in SHAPE‑THIN?
Question
What are the options for exporting an existing project to Bentley ProStructures (ProSteel and ProConcrete) and STAAD.Pro? How should I proceed?
Question
I am using the load generator to apply a load on two members that are connected to each other at an angle. Why are the load values on the member ends not the same?
Question
When importing an RFEM file into Autodesk Revit, I get the error message "Unable to create extrusion". How can I fix the error?
Question
When importing an RFEM/RSTAB file into Autodesk Revit, I get an error message for the load combination saying that "The given name is not unique Parameter name: name." How can I fix the error?
Question
Which cross-sections can I design in the RF‑/TIMBER Pro add-on module?
Question
A cross-section rotates suddenly within a member or a continuous member.What is the reason and how can I fix it?
Question
When generating surfaces from a member, an instability is displayed during the calculation. Why?
Question
In RFEM, I would like to apply a load on a circular ring modeled as a member with the load generator. However, the curved member is not taken into account. Why?
Question
How can I rotate a nodal support?
Question
A PC is used by several users. Are the user-defined materials available to all users of the PC?
Question
A PC is used by several users. Each user wants to use a different file structure in Project Manager. How can this be done?
Question
Which type of cross-section is suitable for applying the "pipe internal pressure" member load?
Question
Does RF‑/JOINTS Steel – Rigid allow designing a joint for the simultaneous action of an axial force and a moment for a beam-to-column connection?
Question
How do RFEM and RSTAB calculate the moment of inertia Iy of a castellated beam from the library?
Buckling Analysis
How can I perform a buckling analysis for a surface in RFEM 5?
Question
What are the optimal computer requirements for RFEM and RSTAB?
Question
How can I import or convert SketchUp models to RFEM or RSTAB?
Question
I have purchased the "EC2 for RFEM" add-on module for reinforced concrete design. Where can I run this module?
Question
I have a surface with complicated geometry and would like to know the area. Does RFEM 5 display the surface area anywhere?
Question
How would you best model hold down elements within panels?
Question
Is it possible to also define a load as acceleration [m/s²]?
Question
Lately, I have been unable to save my model. Unfortunately, the cause cannot be identified.
Question
For the design of biaxially stressed slabs in RF‑CONCRETE Surfaces, I obtain minimum reinforcement in both slab directions. Is it possible to set in the add-on module where the minimum reinforcement should be applied?
Question
Can I create a punching shear reinforcement in RF‑FOUNDATION Pro to increase the punching shear resistance of a foundation slab? Or is it possible to arrange vertical stirrup reinforcement in RF‑FOUNDATION Pro?
Question
How do I activate the earth covering (permanent)? The corresponding check box is deactivated.
Question
Can I add a 3D graphic to an RFEM / RSTAB model?
Question
Which turbulence setting should be used for the numerical wind load generation on buildings?
Question
How can I create an imperfection via the COM interface?
Question
Why are there no resultant support forces for result combinations?
Question
Which roof and ground plan shapes can be considered with the wind and snow load generators of RFEM/RSTAB?
Question
Can I also use the wind load generator for open buildings?
Question
Is it possible to generate wind loads according to DIN EN 13782 with this program?
Question
Are the vertical wall surfaces determined when generating wind loads using surface loads for an open building?
Question
When calculating an oblique plate, I obtain very high result values for the line supports at two edge nodes. Why is this the case, and how can I avoid it?
Question
How can I retroactively modify a member via the COM interface?
Question
How do I create a circular opening in a pipe?
Question
Is it possible to change the font size for all categories in the display properties at once?
Question
When evaluating the support reactions of a plate supported by line supports, I noticed that the support reaction pz' does not correspond to the shear force and deviates significantly. Why?
Question
How do I determine wind loads on structures of any shape?
Question
What is the meaning of Note 40162 concerning the shear strengths of the Binderholz company?
Question
How can I change the size of reinforcement bars from the American code (#3,#4, and so on) to millimeters in RF‑CONCRETE Members while using ACI?
Question
Why are the imperfections taken into account in RFEM and RSTAB when calculating according to the linear static analysis, even though the definition says that no deformations of structural components are considered according to the linear static analysis?
Question
When exporting the additional required surface reinforcement to REVIT, the graphic displayed in REVIT and RFEM does not match; how can I correct this?
- 004165
- RFEM 5
- RSTAB 8
-
- Power Plants
- Steel Structures
- Process Manufacturing Plants
- Bridges
- Towers and Masts
- Temporary Structures
- Scaffolding and Rack Structures
- Offshore Structures
- Silos and Storage Tanks
- Buildings
- Piping Systems
- Cranes and Craneways
- Renewable Energy Structures
- Conveyor Structures
- Drilling Structures
- Stairway Structures
- Wind Simulation & Wind Load Generation
- Eurocode 2
Question
How is it possible to consider the real cross-section geometry of member elements in RWIND Simulation?
Question
When displaying a slab from above, the free rectangular loads have no hatching, although they have been activated in Display → Rendering → Loads. Unfortunately, this is not ideal for the display in the printout report. Can you help me?
Question
Can I analyze a frame structure behind a building envelope with RWIND Simulation, without modeling the building envelope? The loads should be distributed on the members.
Question
Which mesh size should be set for a numerical wind flow analysis?
Question
I cannot define the prestress separately for warp and weft in RF‑FORM‑FINDING. How can I activate it?
Question
Does RF‑STEEL AISC perform torsion design per Design Guide No. 9?
Question
How can I set the calculation parameters using the COM interface?
Question
How can I hide or delete background layers in RFEM and RSTAB?
Question
What are the stiffness reduction factors k33 and k88 in RF‑LAMINATE?
Question
Is it also possible to simulate an external steel structure in RWIND Simulation?
Question
Is it possible in RFEM and RSTAB to completely define a member by entering the data in tables?
Question
For some reason, the prestresses are no longer displayed graphically. How can I display them again?
Hardware and System Requirements RWIND
What are the hardware and system requirements for the RWIND Simulation program?
Question
Is it possible to hide background layers?
Question
I am copying a design case and/or selecting a different or further node for the design. However, the connection geometry defined in the previous design case is not transferred. Why?
Question
How can I import a SHAPE‑THIN cross-section into RFEM/RSTAB?
Question
How can I set the required time t for the fire resistance design in RF‑/STEEL EC3?
Question
I have modeled a curved member with straight member segments. However, this results in discontinuities in the distribution for the diagrams of internal forces. How can I optimize it?
Question
I would like to add a line release on a component in my model. However, this is not accepted. How can I handle this?
Question
When calculating a curved surface in RF‑GLASS, I get a message saying that the surface has more than 4 boundary lines and thus no layered FE mesh can be used. How can I avoid this message?
Question
Is it possible to design a "Kármán vortex street" behind an object in the numerical wind tunnel of RWIND Simulation?
Question
Is it possible to avoid the extended bottom when defining an end plate, and to arrange a single-bevel groove weld? If not, what is the size of the extension?
Question
Before calculating a result combination, a message appears saying that the addition of load cases is not allowed due to failing objects. What does this mean?
Question
Due to the project modification, the information on the project name should also be changed. How should I proceed?
Question
In the "Edit Load Cases" dialog box of the "Self-weight" load case, it is possible to consider the self-weight of a structure in [General Data].How can I graphically display the considered self-weight of the structure?
Question
Several printout reports have been created. However, the page numbering should be continuous. How can I achieve this?
Question
How can I display the local axis systems in RFEM and reverse the local axis z?
Question
How can I create a section through a solid to evaluate the results at any location?
Question
Can I combine the nonlinear calculation in RF‑CONCRETE NL with the determination of foundation coefficients in RF‑SOILIN?
Question
Why does the Results navigator only display the total reinforcement under "Required Reinforcement" and not the top and bottom reinforcements separately?
Question
When starting RFEM or RSTAB, I get a message saying that the graphics chip does not support the OpenGL hardware acceleration. Unfortunately, the rendering in the programs is no longer as detailed, and the work is not quite as "continuous". Can I still use the hardware acceleration?
Question
A surface of my RFEM structure rests in an inclined position in the 3D space. Now I want to create surfaces that are perpendicular to it.Is there an easier and more accurate way than calculating the point coordinates of the new surfaces manually, or than attaching the new surfaces to the existing one by rotating or moving it?
Question
When performing a design with STEEL, I would like to browse through the designed load cases to see the different stress distributions.How can I do this?
Question
What does the ratio b/h refer to when determining the minimum reinforcement according to 9.3.2 in RF‑CONCRETE Surfaces?
Question
I would like to create a ring pipeline consisting of several parts. How do I prevent the transitions from being connected?
Question
Which import/export options between SolidWorks and Dlubal Software are available?
Question
How can I generate moving loads on a surface for a circular ring?
Question
Which bending theory should be used for the calculation of plates and shells - Kirchhoff or Mindlin?
Question
I have problems understanding how to model elastic surface foundations. Where do I enter my modulus of foundation? And what is the meaning of the other surface support parameters?
Question
Where can I set which elements are to be displayed in a graphic?
Question
For a 3D display in RFEM, I would like to display the surfaces with their real thickness.Where can I set this?
Question
The line support and nodal support displays are too large. How can I adjust the support size?
Question
How can I perform a stability/buckling analysis on a plate structure?
Question
I have generated a pre-deformed equivalent model using RF‑IMP by means of a pre-deformed FE mesh. Is the equivalent model considered for all load combinations, or do I have to make further settings?
Question
I would like to remodel a connection using FRAME‑JOINT Pro for comparison purposes, but I am having problems with the bolt spacings. Are there any other spacings, or have I overlooked something?
Question
Can I speed up the calculation in RFEM by providing the computer with more RAM?
Question
How can I rotate or move a DXF imported as a background layer into the correct view?
Question
Is the longitudinal reinforcement defined in RF‑CONCRETE Surfaces considered when determining internal forces in RFEM?
Question
After installing RFEM 5.20.01 or RSTAB 8.20.01, our network license no longer works. What can we do?
Question
I want a support or member hinge not to absorb any bending moments above a certain size. How can I do this?
Question
How is it possible to effectively model a curved pipe along a path?
Question
How do I divide a surface in RFEM?
Diagnostic File for License Problems
How can I create a diagnostics file (authorization.txt) in the case of license issues?
Question
Why do I obtain much higher design ratios in RF‑/STEEL than for cross-section design in RF‑/STEEL EC3?
Question
Is it possible to use a single-user dongle (hardlock or softlock) on a virtual machine or via Remote Desktop?
Question
I have created a project in a trial version and now I cannot open it on another computer. Is it possible to remove this restriction?
Question
When determining the buckling modes in RF‑STABILITY, additional lines are displayed for each member perpendicular to the buckling curve. Why?
Question
How can I split a quadrangle surface on a line?
Question
Is Revit able to control the specific member types of Dlubal Software? For example, round members of a wind bracing should be transferred as a tension member and not as a beam member.
Question
Is there a possibility to graphically check the selected effective widths when entering ribs in RFEM?
- 003034
- RF-COM 5
- RFEM 5
-
- RF-STEEL 5
- RF-STEEL EC3 5
- RF-ALUMINUM 5
- RF-CONCRETE 5
- RF-DYNAM Pro | Natural Vibrations 5
- RF-TIMBER Pro 5
- RS-COM 8
- RF-STABILITY 5
- RSTAB 8
- STEEL 8
- STEEL EC3 8
- ALUMINUM 8
- DYNAM Pro | Natural Vibrations 8
- TIMBER Pro 8
- RX-TIMBER Glued-Laminated Beam 2
- Concrete Structures
- Building Information Modeling (BIM)
- Eurocode 7
Question
Which modules can be accessed via the COM interfaces RS‑COM and RF‑COM?
Question
I have imported the structural data using the import functions or direct interfaces. How does the material assignment work so that the materials are also accepted by the design modules?
Question
How can I change the location of the temporary data for RFEM and RSTAB?
Question
For a concentrated load in the middle of a cable, I obtain reasonable support and cable forces. However, the deformation is not reasonable. Why?
Question
How can I display the numbering of nodes, members, and cross-sections separately in RFEM or RSTAB?
Question
In a load case, there are compressive forces arising in a cable. What is the explanation for this?
Question
Is it also possible to plot from RFEM and RSTAB?
Question
My model is stiffened by tension members. The calculation is terminated with a message about instability. How can I finish the calculation?
Question
I defined several materials for my cross-section. SHAPE‑THIN is generating strange cross-section properties.
Question
When starting the program, I get Warning No. 50 "Program authorization failed". What is the reason?
Question
Where can I find videos or introductory examples of the RF‑COM and RS‑COM add‑on modules?
Question
I cannot find DIN 1045 in the add‑on module for concrete, but I need it for an existing building. What should I do?
Question
The RF‑CONCRETE Members add-on module is calculating a very high required reinforcement to fulfil the requirements of the SLS checks. Is there any way to avoid such high values for the required reinforcement?
Question
Is it possible to enter and design a reinforced concrete surface with a reinforcement layer in the center of the surface?
Question
How can I control the stiffness reduction by load cases for surfaces?
Question
Is it also possible to design flat slabs in RF‑TENDON and RF‑TENDON Design?
Question
In RF‑/DYNAM Pro, I get the error No. 1759: "The Microsoft Excel Worksheet 'Acceleration Data' was not found." What could be the reason?
My Own Programs
Is it possible to integrate my own programs into the program interface of RFEM?
Question
In RF‑/DYNAM Pro, I get the error message: "The assigned mass case does not exist", although I have defined a mass case. Why?
Question
I have activated the settlement calculation in FOUNDATION Pro, but cannot export the determined stiffnesses of the nodal supports. Why not?
Question
How is it possible to determine which plastic deformation remains in an RFEM model with a plastic material model after the relief?
Question
When calculating a case of RF‑/JOINTS Steel - Column Base, I get Message No. 48335 saying that the bending moment Mz exceeds 5% of the plastic moment resistance. What does it mean?
Question
I cannot get my members exported from RFEM to TEKLA. What am I doing wrong?
Question
Is there any possibility in RFEM to consider friction for the horizontal reactions of a surface support?
Effective Lengths and Critical Buckling Load
The "Effective Lengths" tab is in the "Edit Member" dialog box. How does the modified effective length factor or the "Check exceeding of critical buckling load" option affect the calculation in RFEM 5?
Question
Is it possible to process the input data, such as effective lengths of several members or continuous members, in the add-on modules RF‑/STEEL EC3, RF‑/STEEL AISC, or RF‑/STEEL CSA?
Question
What are the differences between a line hinge and a line release?
Question
Is it possible to orient a nodal support towards a rotated member in RSTAB 8 without having to measure the angle and enter it?
Question
In connection with the nonlinear calculation for the serviceability limit state design checks, I obtain implausibly large values for crack width and deformation in the RF‑CONCRETE modules (see Image 01). What is the cause, and how can I fix the problem?
Question
I would like to install the programs on the D:\ drive instead of C:\. Unfortunately, this is not possible for some program folders. What can I do?
Question
I have calculated the effective lengths in my model using RSBUCK/RF‑STABILITY. Which effective lengths are relevant for further analyses?
Question
What is the nonsymmetric solver used for?
Question
When inserting several blocks in RFEM or RSTAB, new materials and cross-sections are created each time, even though they are the same. How can I unify them while inserting the blocks?
Question
I have changed the background color to "white" and now I cannot see the "Values on Surfaces" anymore. Why? How can I control this properly?
Nonlinear Material Behavior in Time History Analysis
Is it also possible to use nonlinear material behavior in a time history analysis?
Question
Is it possible to reduce the display or the number of result values in the critical perimeter?
Question
Why is the result of the formula calculation smaller by the factor of 1,000 compared to the numerical calculation, although there are no dimensions?
Question
I have installed RFEM and Revit, but the buttons for direct export/import in Revit are missing. What can I do?
Question
I would like to increase my internal forces by 10% and use them to perform design in the add‑on modules. Is this possible?
Question
I get Warning No. 469 "Lines [line numbers] lying in the surface intersect each other and share no common node". If I confirm the warning with "No", Error No. 639 appears: "Error No. 11 while generating the FE mesh!" What should I do?
Question
I would like to clone a virtual server, format a hard disk, or swap hardware components. How can I save the license when using a softlock dongle?
Question
Where can I find the install logs or the MSI log files of the program installation?
Question
Some model and load elements are not displayed in the graphic, although they are available in the navigator and tables.
Question
When saving models, the following message appears: "Models '1' should be saved in folder 'C:\TEST'. This folder is not linked to a project. Do you want to create a new project for this folder?" What does this mean?
Question
Windows 10 Update 1709 (Fall Creators)
Question
How can I make a scissors hinge to refer to a local axis system?
Question
Why is it not possible the start the new RFEM Version 5.19 with the previous authorization?
Question
How can I influence the sag of the found shape in RF‑FORM‑FINDING?
Question
How can I retroactively adjust my surface model with regard to the finite element size and avoid a total number of elements that is too high?
Question
For my structural model, I want to print some images into the printout report.Do I necessarily have to print the corresponding tables in the report? I just want to store only the images.
Question
The welds of a column head plate are very small. What is the reason?
Question
Which matrix solver method should I use, direct or iterative?
Question
How can I completely uninstall Dlubal Software products?
Question
When generating loads with a different arrangement of members within the load plane, I obtain incorrect load values. Why is the load not distributed correctly?
Question
Is it possible to perform a calculation in RF‑CONCRETE Members or RF‑CONCRETE Columns with the user-defined material (yield strength)?
Question
The new version of RFEM does not provide me with the saved printout templates that I created in the previous versions. How can I transfer the templates to the new version?
Question
Are the upcoming upgrades of RFEM/RSTAB and the individual programs included in a service contract?
Question
Can I change my local licenses to network or floating licenses?
Question
What advantages do I gain with a service contract?
Design of Solids
Is it possible to use the add-on modules for RFEM 5 to design concrete solids?
Question
How can I open an RSTAB 8 file in RSTAB 7?
Question
Is it possible to import effective lengths from RF‑STABILITY or RSBUCK in RF‑/TIMBER Pro?
Question
For the "Import Support Reactions as Load" feature, I did not find any options to transfer line moments. How can I import the moments mx from a line support as a load?
Edge Lamellas
How is it possible to consider edge lamellas of a glued-laminated beam?
Question
When using line releases, I get an error that the definition of the release is not unique. What does that mean?
Question
Is it possible to display or export certain results over a period of time from the time history calculation in RF‑DYNAM Pro - Forced Vibrations?
Question
I would like to know the self-weight of my model. Using the plausibility check, I can quickly determine the model mass. How can I obtain the weight of the individual beam types or the component of the steel grades S 235 and S 355?
Question
How can I completely remove and reinstall the dongle driver?
Question
What is the easiest way to define a polygonal surface graphically?
Question
How can I evaluate the internal forces of a particular FE node in RFEM?
Question
After having downloaded the installation file, an error message appears saying that the setup file is defective; what can I do?
Question
What is the meaning of the "Activate Weld Design" option in the detailed settings of RF‑/STEEL EC3?
Question
Can I rotate a foundation about the Z-axis in the RF‑FOUNDATION Pro add-on module?
Question
How can I consider the second-order analysis for seismic design?
Question
I get error message 30420 saying that the tolerance (epsilon) for the integration of a node into a line is too large. What can I do?
Question
When performing plastic design, I get stresses displayed that exceed the yield criterion. Have I done anything wrong?
Question
When starting the installation, I get the error message "Error extracting PRO to the temporary location". What can I do?
Question
When importing our newly extended network license via the SL Key Activator, I get the error message "The product key is exhausted". What does it mean, and how can I fix the problem?
Admin Control Center
How can I create a diagnostics report for the RFEM 5 or RSTAB 8 licenses in the Admin Control Center?
Question
How can I import curved members from the cadwork program or other CAD programs?
Question
How does the asynchronous calculation via the COM interface work?
Question
I designed a steel connection using RF‑JOINTS, then created a model to compare it in RFEM. Why are the results not identical?
Question
In the design of a classic rigid end plate joint, only the moments about the major axis (y‑axis) are considered. If the moments are entered about the minor axis, the resulting tensile forces are not taken into account in the design. Am I correct?
Question
The design of the premature weld failure at the fin plate is governing for the design of a pinned beam connection with JOINTS.
What exactly does the design of the premature weld failure consider, and is it necessary to perform it in every case?
Question
I have a student license for RFEM; can I also obtain the license for other programs, such as CRANEWAY?
Question
Where can I download the add-on modules, such as RF‑STABILITY?
Question
What is the difference between the materials Isotropic Plastic 1D and Isotropic Nonlinear Elastic 1D?
Trapezoidal Sheets
What is the fastest way to model trapezoidal sheets by means of surfaces in RFEM?
Question
We do not use Adobe© Reader, but a different product. Can I change the link in the program settings to display the help file?
Question
I get an implausible result with the expression "1.#J" in the RF‑/ALUMINUM add-on module.
How can I fix this?
Question
Is it also possible to perform a deformation analysis in the cracked state for a 2D model in RF‑CONCRETE Surfaces?
Question
The import of a DXF file initially seems to be working, but no data is there.Why?
Question
I would like to define a nodal support displaceable in X', but the selection is grayed out. Why?
Question
In RF‑/DYNAM Pro, I can select a conversion type for the mass. What do the different options mean, and what are the differences?
Question
The sum of the support forces in my model differs from the internal forces in a result beam. What can be the reason?
Question
What are the possibilities for the result evaluation of line hinges?
Question
I have modeled a floor slab with a downstand beam that intersects a continuous column. How can I prevent the slab from resting on the column, and ensuring that it rests only on the downstand beam?
Question
Is the latest version of RFEM compatible with the current version of Autodesk Revit?
Question
Is it possible to evaluate the deformations and the internal forces of hinges?
Query
We would like use the online maps on your website to find snow, wind, and seismic loads. Can you please tell us more about activating and using this service?
Question
How can I design a reinforced concrete cross-section in SHAPE‑MASSIVE?
Question
Is it possible to define orthotropic surface loads in RFEM? I would like to subject a surface to different temperature loads per direction.
Question
Which material model should be assigned to a timber contact solid?
Question
How can I create a rectangular timber cross-section in the COMPOSITE‑BEAM program?
Question
How can I create a printout report for COMPOSITE‑BEAM?
Question
Is it possible to create nodal releases via the COM interface?
Question
What are the options to export an existing model to Advance Steel?
Question
In RFEM, the Czech characters are not displayed correctly. How can I fix it?
Question
It is not possible to enter a nonlinear stress-strain curve. The diagram is initially displayed correctly, but then an error message appears saying that the positive values have to be entered only in ascending order. How can I avoid this message?
Question
What is the easiest way to delete a node of two crossing members?
Question
Which calculation methods are used in RSTAB and RSBUCK?
Question
How can I find the server's IP address where the dongle of Dlubal Software is inserted or activated?
Question
After installing RFEM/RSTAB version X.07.09, a blue screen is displayed when running the program. How can I fix this?
Question
Does RFEM create a backup file while working in it? Where can I find it?
Question
Using the Results navigator, it is possible to show the resultant of all support forces and their components. Is it also possible in RFEM to show the resultant support force of a single surface with foundation?
Question
Why are the wind and snow load generators disabled (grayed out) in my model?
Welded Members
What is the best way to model two welded members that lie parallel to each other?
Question
I have apparently successfully exported a DXF file including isolines/isobands of the current results. Why are the isolines/isobands not visible after the import into AutoCAD?
Question
Why is no color scale displayed in the panel despite the available results?
Question
In a nodal point, several members are hinged. How many member end hinges have to be defined?
Question
I have entered a result beam above a door opening. Why do the shear forces and moments differ so strongly from the ideal single-span beam?
Question
I have performed a structural analysis using RSTAB 8 and sent it to my colleague to check it, but the colleague cannot open the calculation in RSTAB 7. Could you please help me?
Question
How can I adjust the display settings of the objects in the background (hidden in the background)?
Question
When comparing the partial calculation of a single floor with the total calculation of the building, the local deformations are very different. How is this possible?
Question
How can I transfer a field of nodes instead of just a single node via the COM interface in VBA?
Question
I would like to renumber the surfaces in my model in groups.How can I do that?
Question
Is there a possibility to graphically display the diagram of line support forces with any number of the value data?The default setting has only two indicated values.
Question
When using the RF‑/CONCRETE Columns add-on module, do I have to define the imperfections of a column as a load case in RFEM/RSTAB?
Question
Which cross-sections can I design in the RF‑CONCRETE Columns and in the RF‑CONCRETE Members add-on modules?
Question
What is the easiest way to generate a rotated surface or a surface in the polar direction?
Question
Why is the cracking moment Mcr smaller for biaxial bending than for uniaxial bending?
Question
I use Microsoft Word for the documentation of my structural analysis.
For this, I use the "Print Graphic" → "Save to Clipboard" option in RFEM or RSTAB, and import the graphics into Word using Ctrl+V.
However, after I successfully inserted some images, nothing more is happening.
What is the reason for this, and how can I avoid it?
Question
Does SUPER‑RC superimpose only the internal forces from the models that have already been saved, or also from the models that are still open and have not been saved yet?
Question
Is there any possibility in RFEM and RSTAB to change the direction of a particular force component on all available nodal loads?
Question
What is the difference between basic internal forces, principal internal forces, and design internal forces in RFEM?
Question
I have generated member loads from area loads via planes horizontal to the plane of a multistory frame. Each cell contains a truss as a diagonal. Although the diagonal has been excluded from the load, the member load distribution is linear in different directions after being disconnected on both posts.What is the reason, and what should be done to apply the same member load on both posts?
Question
How can I change the colors of the graphical display of a reinforcement?
Question
After the calculation, an opening modeled circularly is displayed as a rectangle.How can I fix this problem?
Question
I save my objects on a network drive. Does this affect the calculation time?
Question
In the FOUNDATION Pro add-on module, the steel schedule and concrete cubage are displayed in the last two result windows. How can I print out these two pages?
Question
Although I have defined average regions, they are not considered in the design in RF‑CONCRETE Surfaces. Which setting did I overlook?
Question
Is it possible in the RF‑CONCRETE Surfaces add-on module to limit crack widths due to internal restraint and with the customized fct,eff?
Question
Is it correct that the allowable soil pressure has to be entered as the characteristic value in Window 1.1 General Data of FOUNDATION Pro? Will the design value be determined automatically?
Question
Where in the FOUNDATION Pro add‑on module can I activate the design for limiting a gaping joint according to DIN 1054:2010‑12 A 6.6.5?
One-Way Slab
How can I enter a one-way slab instead of a two-way slab in RFEM?
Question
I have modeled an element slab as "Orthotropic Surface". Can I also use these surfaces in reinforced concrete design?
Question
For wall ends and wall corners, no soil contact stresses are deducted in RF‑PUNCH Pro, even though the "Foundation" type has been set. Furthermore, there seems to be no option anywhere to set the soil contact stresses to be deducted. Why?
Question
Is there any option to display the stresses for a solid model after a dynamic time history analysis?
Question
What value of the punching shear force VEd is considered for result combinations in RF‑PUNCH Pro?
Question
Is it possible to calculate the punching shear reinforcement for a fixed value of a longitudinal reinforcement in RF‑PUNCH Pro?
Question
Can I also see the results of the add-on modules in the RFEM 5 Viewer?
Question
Is there any possibility to export the animations provided by RFEM/RSTAB (displacements, Auto Rotate of the rendered model) so they can also be shown for presentations without using RFEM/RSTAB?
Question
Why are the round steel sections blocked in the SHAPE‑THIN library?
Question
How can I specify a user-defined allowable crack width in the add-on modules for concrete design?
Question
Some of my supports are rotated by 180 degrees. How can I rotate the view of a nodal support?
Import of Effective Lengths
Is there any option to automatically import the effective lengths of members calculated in RSBUCK or RF‑STABILITY into RF‑/STEEL EC3?
Question
Is it possible to save the modified settings of the display properties (for example, line thickness and color) in a file?
Question
For a member with an unsymmetric cross-section, the load plane runs through the center of gravity of the cross-section and not through the shear center. Therefore, torsion resistance must occur. Why is there MT = 0?
Trial Version RFEM 5
I am currently using a trial version of RFEM 5 and also need some add-on modules. Where can I activate them so I can test them?
Question
Where can I enter distances of crane axes?
Question
I have the following problem in RF‑/FF‑LTB: To analyze the effect on the load application point, I have defined the eccentricity e-z, once positive and once negative. A positive value, which means load application on the lower chord, should be a contribution to the stabilization of the structural system. But this is not the case. What do I have to do?
Question
In the graphical representation of the line support forces, I can see that the spacing between the arrows is very small. How can I modify it?
Question
I would like to see the maximum and minimum support forces in my display for a result combination. However, I only see the maximum forces displayed.
Question
How do I change the graphical display of member loads?
Question
How can I switch off the spiral display of spring members?
Question
How can I consider prestressed cables in RF‑/DYNAM Pro?
Question
A load graphic in my printout report shows very small load arrows. However, they are displayed sufficiently large in the work window. How can I increase the size for the printout report?
Question
I have a conic surface where the surface load should act in the projection around the surface. Is this possible?
Question
Is it possible to display a DXF file of the beam geometry using the program RX‑TIMBER Glued-Laminated Beam?
Question
Is there any possibility to calculate several models one by one (overnight, for example) without opening and calculating them separately?
Question
It is possible to include my own company logo in the printout report.When the logo of our company is included in the printout report, it is printed very small. Is it possible to change the size?
Question
The maximum value is only displayed graphically in the deformation.Is it possible to display the maximum deformation of each member in RFEM/RSTAB?
Question
To create our information brochures, we need some project graphics from RFEM/RSTAB.In addition to printing to the clipboard, how can I save the graphics or generate them for further processing by RFEM/RSTAB?
Question
For plotting, is it possible to set the print quality higher than the "Maximum (max 5000 × 5000 pixels)" in the "solid" display mode?
Question
Is it possible to use a 3D mouse?
Question
According to which coordinate system are the line hinges aligned and evaluated?
Question
When installing a full or a test version on Windows Vista, a message indicating insufficient free space appears. What should I do?
Question
I am working with the RFEM or RSTAB program for the first time. What is the easiest way to learn to work with it?
Question
How can I delete empty load cases and rearrange the remaining ones?
Question
The sign of a negative support force is not displayed in the result graphic. What is the explanation for this?
Question
In RF‑/DYNAM Pro, I get error message No. 10040: "It was impossible to calculate all eigenvalues with required accuracy. [...]" How can I fix this error?
Question
Can I display negative shear stresses in SHAPE‑THIN?
Question
Where in the RF‑LAMINATE add-on module can I find which stress value is used for the design?
Question
We received a NET softlock and activated it successfully on the license server. However, after the installation of the programs on a user's PC, the "Authorization" dialog box appears when starting the program. If I select the "Use full version" option and refer to the authorization file, I get a message saying that the license has already been activated. What should I do?
Question
Does the fatigue design in CRANEWAY also consider welded stiffeners?
Question
During the installation, I get a message from the installation wizard saying that another installation is in progress right now, and the current installation cannot continue. What should I do?
Question
Why is a free load not applied completely?
Question
Is it possible to import and edit cross-sections created in the previous program versions of SHAPE‑THIN in SHAPE‑THIN 8?
Question
Is there an easy way to create a spatial structure from a 2D model whereby the nodes in columns and lines will be extruded into walls?
Question
Is it possible to transfer free loads (such as free concentrated loads, free line loads, and so on) via the IFC interface?
Question
After converting a CAD/BIM object to a member, the CAD/BIM object is missing.
Was it deleted during the conversion?
Question
Are there any model limits regarding the file size? May the file size (with FE mesh, results, and printout report) be greater than 4 GB?
Question
Can I display relative member deformation in RFEM?
Question
After the form-finding, I exported the deformed shape to a DXF file and found that the results of the DXF file do not correspond to RFEM. Why?
Question
What is the best way to transfer the force between solids and surfaces?
Question
Is it possible to design a model with a pile foundation in RFEM?
Question
During the installation, I get the message "Failed to install hardlock.cat signature".How can I fix this?
Question
Why is the "Design Details" button not active in RF‑CONCRETE Surfaces?
Question
In compliance with DIN 1054, the allowable contact stress "Sigma_all" has been entered for the soil contact stress analysis. RF‑FOUNDATION Pro requires a "characteristic value" to be entered. How are both approaches of DIN 1054 and EN 1997‑1 compatible?
Question
Two cranes are running on one crane runway. What is the definition of the exposure categories for the interaction between the cranes?
Question
Is it possible to perform a seismic analysis with the masonry material model?
Question
I am using the load generator "Convert Area Loads to Member Loads via Cells". What is the function of the "Nodes on virtual lines" feature?
Question
When importing a v2c file, I get Error Code 43 HASP_DEVICE_ERR "Input/Output error occurred in secure storage area of Sentinel SL key OR a USB error occurred when communicating with a Sentinel HL key". What can I do?
Current Dongle Driver
Where can I obtain the current dongle driver?
Service Contract
Are the updates of my add-on modules covered by the service contract?
Question
Why it is required to enter a concrete cover in SHAPE‑MASSIVE? The position of the individual reinforcement bars is specified directly in the cross‑section definition anyway.
Question
Is it possible to calculate the cases of the individual add-on modules separately, or is the CalculateAll() method always used for the calculation?
Question
Can I also lease a program?
Question
Is it possible to access the list of printout reports via the COM interface?
Update / Upgrade
What is the difference between an upgrade and an update?
Question
Can I overwrite the old tlbs and dlls of the COM interface without any problems?
Question
I need training for the RSTAB program family. Which options are available?
Question
How can I create NURBS using the COM interface?
Question
Why is the load value displayed in the online service "Geo-Zone Tool: Snow Load, Wind Speed, and Seismic Load Maps" different from the value in the corresponding standard in some cases?
Question
Which product groups require separate service contracts?
Technical Support and Pro Services
How can I get tech support and what extended services are available within the Service Contract Pro?
Question
What is the meaning of the superposition according to the SRSS rule in a dynamic analysis?
Question
Is the Dlubal online service "Cross-Section Properties" free of charge?
- 003417
- RFEM 5
- RSTAB 8
-
- CRANEWAY 8
- SHAPE-THIN 8
- RX-TIMBER Glued-Laminated Beam 2
- RX-TIMBER Roof 2
- RX-TIMBER Continuous Beam 2
- RX-TIMBER Purlin 2
- RX-TIMBER Frame 2
- RX-TIMBER Column 2
- RX-TIMBER Brace 2
- COMPOSITE-BEAM 8.5x
- Concrete Structures
- Steel Structures
- Timber Structures
- Dynamic and Seismic Analysis
- Eurocode 1
- Eurocode 8
Network Licenses for RFEM 5
How do the network licenses work? How many times can you use them to license a program?
Upgrade from RSTAB to RFEM
Can I upgrade RSTAB 8 to RFEM 5?
Question
What is the difference between network and single-user licenses?
Question
I have entered the data on specific objects, such as members or surfaces, in the add-on module, and after the calculation or design in this module, I renumbered the objects in the main program. Are the modifications considered automatically in the add-on module?
Question
Are Dlubal Software licenses lifetime licenses?
Question
Does Dlubal Software also provide project-related support?
Question
Which result combinations can I design with the RF‑/JOINTS Pro program, and what should I pay attention to?
Question
Can I enter a user-defined snow load value when using a snow load generator?
Question
I need training for the RFEM program family. Which options are available?
Question
Why do I obtain different results for the same end plate joint in RF‑/JOINTS Steel - DSTV and RF‑/JOINTS Steel - Rigid?
Question
Why is the transversal compression factor kc,90 of 1.0 assumed in the design of support pressure?
Question
In Window 3.1 of the RF‑CONCRETE Members add-on module, it is possible to save reinforcement templates and archive the template library in a *.res file on the hard disk.Is there any option to process these files in external software?
Question
Can I use the RF‑STEEL Surfaces add-on module to perform fire resistance design for steel surfaces?
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I would like to have an individual presentation of a program. What should I do?
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Is it possible to save viewpoints without changing the visibility and the settings in the Display navigator?
Question
Is it possible to add or delete the (intermediate) dimensions retroactively for the already created chain dimensioning?
Question
Is it possible to combine the buy and the rent purchase types?
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Which result combinations can I design with the RF‑/TIMBER Pro program, and what should I pay attention to?
Question
What are the advantages of network or floating licenses, compared to local licenses?
Question
Is it possible to display level curves in the surface results?
Question
Do you provide a free viewer where I can open the RFEM 6 or RSTAB 9 files?
Next Licenses
Is the purchase price of the additional licenses reduced at Dlubal Software?
Question
Why is the membrane constricted so much during the form-finding? I am obtaining very large deformation values.
Question
Is it possible to specify a one-way stress direction for a "generated load?"
Question
During the calculation in RF‑CONCRETE Members, I get the warning "Error while reading in the design forces and moments from the main program!", although the results are available. What is the reason?
Question
When calculating mode shapes in RF‑/DYNAM Pro, I obtain effective modal mass factors that are all approximately 0. Why?
Question
In PLATE‑BUCKLING, the reduction factor due to column buckling χc is calculated using the modified slenderness of the sheet metal ${\overline{\mathrm\lambda}}_{\mathrm p}$. Why is it not calculated using the slenderness of the equivalent compression member ${\overline{\mathrm\lambda}}_{\mathrm c}$ ?
Question
Which packages are available for the Geo-Zone Tool?
Question
The upper and lower flanges have to be joined by a column, but the verticals and diagonals are connected to the flanges.How do I arrange the hinges?
Question
I cannot see any members if the RF‑/STEEL EC3 add-on module is selected as a "load case"; why?
Question
I have inserted a block into a file. Now, the block has been changed in the Block Manager. Is it possible to automatically update the already inserted block?
Question
Is it also possible to integrate the Geo-Zone tool for the load determination into a web service (API)? What are the conditions?
Service Contract for Add-on Modules
How do the service contract costs increase when purchasing further add-on modules?
Question
I would like to carry out the calculation overnight. Unfortunately, the program requires entries in the case of messages. Is it possible to deactivate this?
Question
Which formula is used for the calculation of the elastic torsional buckling force for torsional buckling Ncr,T in RF‑/STEEL EC3?
Question
I get Error No. 2379 "Invalid material data!" in the RF‑CONCRETE Members add-on module; what can I do?
Question
Is it possible for the program to create a table that shows the maximum internal force combinations of several members? For example, for the upper chord of a truss and for the struts.
Question
During the calculation in RF‑/FOUNDATION Pro, I receive an error message saying that the foundation dimension is less than twice the eccentricity. Why? And what can I do?
Question
Why is the shear stiffness reduced to 10% in the RF‑LAMINATE add-on module as well as for the orthotropic material model in RFEM for the shear modulus Gyz? I think the shear stiffness in the shear plane Gxy would have to be reduced here?
Question
Can I apply an impact load to the bucket only, instead of to the entire foundation?
Question
Where can I specify a basic reinforcement with the details of a diameter and rebar spacing in RF‑CONCRETE Surfaces?
Question
When modeling a building, there is a location where I have a wall on a ceiling that is not supported underneath. What are the modeling options for this?
Question
Is it possible in RF‑/TOWER Loading to display the intermediate steps for determining the wind load, such as the fullness coefficient?
Question
Where can I find the RF‑CONCRETE Deflect add-on module? How can I activate it?
Question
My Windows Explorer has been very slow for a while. Is it possible that this might be related to RFEM?
Question
For my result evaluation, the extreme values of the vertical support forces with the corresponding horizontal forces from a result combination are required for several support nodes. Is it possible to set this in the program?
Question
Why does automatic combination result in several seemingly identical load combinations?
Question
Although I have selected a column web stiffener for my connection, it is apparently not considered in the design. How are web stiffeners handled in the design?
Question
What advantages does webshop purchase provide?
Stress Points
Where can I see the stresses in RSTAB 8?
Question
In spite of the hinge, I obtain a bending moment My for the rib member. Why?
Question
How can I display the corresponding internal forces of the maximum results in result combinations in the printout report?
Question
Is it possible to renumber load cases, load combinations, and result combinations?
Question
I have manually generated earthquake loads. How can I combine them according to the superposition rules of the standard?
Question
Can I create or generate parallel load combinations for the geometrically linear analysis and the second-order analysis (including imperfections) in RFEM?
Question
My model includes members and surfaces/solids made of timber. I have already created the 2D/3D orthotropic material model. Now, I receive an error message saying that the material model for cross-section X must be isotropic.
- 003337
- RFEM 5
- RSTAB 8
-
- SHAPE-THIN 8
- CRANEWAY 8
- PLATE-BUCKLING 8
- COMPOSITE-BEAM 8.5x
- RX-TIMBER Glued-Laminated Beam 2
- RX-TIMBER Roof 2
- RX-TIMBER Continuous Beam 2
- RX-TIMBER Purlin 2
- RX-TIMBER Frame 2
- RX-TIMBER Column 2
- RX-TIMBER Brace 2
- Concrete Structures
- Steel Structures
- Timber Structures
- Mechanical Engineering
- Bridges
- Structural Analysis & Design
- Finite Element Analysis
- Stress Analysis
- Steel Connections
- Eurocode 3
Question
I have purchased the programs RFEM and RSTAB. However, I can only see RFEM (or RSTAB) in the Download section in my Dlubal Account. Why?
Question
What is the purpose of the "Calculate eigenvector for unstable model..." option in RF‑STABILITY?
Question
How can I perform a stability analysis or walls in RF‑CONCRETE Surfaces?
Question
How is the laying direction of a reinforcement defined in RF‑CONCRETE Surfaces?
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Which method of analysis is used for insulating glass?
Question
When performing the fire resistance design in RF‑CONCRETE Members, acting internal forces (for example, My,Ed,fi) are applied that do not correspond to the internal forces of the applicable determination of internal forces. What is the reason?
Question
To which axes do the support rotations and support eccentricities in RF‑/STEEL EC3 Warping Torsion refer?
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What does the load application point in RF‑/STEEL EC3 Warping Torsion refer to?
Question
The calculation of my model results in unrealistically high stresses at many locations. What could be the reason for this?
Question
Is it possible to export the form-finding results? For example, in a DXF file?
Question
How do I change the preset partial factors in CRANEWAY?
Question
How are guy wires processed in RF‑FORM‑FINDING, concerning the prestress load to be applied? Is it necessary to assign a prestressing force to the guy wires?
Question
When trying to open an RFEM/RSTAB file, I get the error message "The central directory was not found in the archive..." What can I do?
Question
Why is it not possible to design any LVL material according to the SIA 265 standard in RF‑/TIMBER Pro?
Question
Is it also possible to enter the temperature for a surface in the XZ plane by using the height (variable in Z)?
Question
I have entered a line hinge in the center of a surface, and the bending moment is not equal to zero at the line hinge. Why?
Question
I get an error message saying that the Wall type of support cannot be defined on a rotated line. How can I fix this problem?
Question
How are the location-specific Geo-Zone Tool data queries calculated for the determination of various building loads?
Question
Is there a separate installation for the viewer mode?
Question
Does Dlubal Software provide any solutions for composite bridge construction, or perhaps also verification examples or reference objects?
Question
How can I display nodal masses?
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How can I open the RF‑GLASS add‑on module?
Question
How can I recognize that the RF‑CUTTING‑PATTERN flattening process has found the convergence?
Special Cross-Section
I would like to use a cross-section that is not included in the cross-section library of RFEM 5 and RSTAB 8. Is it possible to get this cross-section?
Question
Is it possible to consider the loads on a glass pane from the structure in the RF‑GLASS design?
Question
When designing a beam, I would like to neglect the torsion included in the stability analyses using the filters described in Knowledge Base article #001498.I define the filter, but the torsion warning appears at the same x‑location again. Do the design internal forces change, or why is that?
Question
For some Sikla cross-sections in Sikla connections, the RF‑JOINTS add-on module gives the error "Only Sikla cross-sections allowed" and it is not possible to perform the calculation. What is wrong?
- 003312
- CONCRETE 8
- ALUMINUM 8
-
- CONCRETE Columns 8
- EC2 for RFEM 5
- EC2 for RSTAB 8
- TIMBER Pro 8
- CRANEWAY 8
- RF-CONCRETE Columns 5
- RF-CONCRETE 5
- RF-PLATE-BUCKLING 5
- RF-FOUNDATION Pro 5
- RF-HSS 5
- RF-GLASS 5
- RF-TIMBER Pro 5
- RF-SOILIN 5
- RF-FRAME-JOINT Pro 5
- RF-STEEL EC3 5
- RF-PUNCH Pro 5
- Steel Structures
- Structural Analysis & Design
- Stress Analysis
- Stability Analysis
- Eurocode 2
- Eurocode 3
- Eurocode 5
- Eurocode 9
- Eurocode 7
Question
How can I change the Standard / National Annex set for the design in the add-on modules and stand-alone programs?
Question
Why do I get different design results for a load combination (CO) and a result combination (RC) in STEEL EC3 in spite of having the same internal forces?
Question
Is the exponent n applied differently from the design standard when determining the damage parameter ζ (zeta)?
Question
How can I create a fingerprint (*.* ID file) on our server?
Question
Is it possible to display the corresponding internal forces for a maximum or minimum internal force when using a result combination as an envelope for surface internal forces?
Question
Why is it not possible to modify the thickness of single cross-section elements in SHAPE‑THIN?
Question
Why is the ground failure analysis not performed in RF‑/FOUNDATION Pro?
Question
How can I design a foundation for lifting loads?
Elastic critical moment for lateral-torsional buckling
What are the options in RFEM 5 or RSTAB 8 for determining the ideal elastic critical moment for lateral-torsional buckling for any cross-sections and systems/loads? Is it also possible to design flat steel (brackets, flat steel stringers of staircases)?
Question
How can the standard case tables be applied in RF‑/FOUNDATION Pro for the soil contact stress analysis?
Question
In the case of the "Initial strain from other LC/CO" feature, I cannot retrace internal forces. How is this function mapped internally?
Question
There are no result values displayed in the table for the individual surfaces. Why?
Question
Is it possible to import pipes from AutoCAD Plant 3D to RF‑PIPING Design?
Effective Lengths
Is it possible to use Excel to modify the effective lengths in the add-on modules TIMBER Pro or STEEL EC3?
Question
Sometimes, the message "Some time-intensive display options are in use, which slow down the rendering process" appears. What can I improve?
Question
Where can I find the stiffness matrices of orthotropic surfaces?
Question
Is it possible to save layer structures in a file in the RF‑LAMINATE add-on module and distribute this to other computers?
Question
Where can I find the layer structures by producers of cross-laminated timber plates in the RF‑LAMINATE add-on module?
Question
I am designing surfaces in RF‑CONCRETE Surfaces and get a high minimum reinforcement in some areas as a result of the SLS design. In other areas, however, the minimum reinforcement is significantly smaller. Why?
Question
Is it also possible to display member internal forces with regard to the global coordinate system?
Question
What is the difference between "with shear connection" and "without shear connection" in the case of built-up cross-sections?
Question
Is it possible to display cross-section properties using the RF‑COM/RS‑COM interface?
Question
Why is the shear force Vz for a rib directly above the support smaller than the one close to it?
Question
Is it also possible to rearrange the distribution of stresses and internal forces in surfaces? For example, averaged within an FE element?
Question
Is the plastic section modulus of cross-sections implemented in your program?
Question
In Admin Control Center, the product names are not displayed. What can I do?
Question
Which operating systems are supported by GEMALTO Driver Version 7.92?
Question
Is it possible to transfer a user-defined value spectrum to all load cases or load combinations?
Question
Is it possible to perform the form-finding of membranes without considering the semi-rigid supporting structure?
Question
In RF‑CONCRETE Surfaces, the crack depth is displayed in connection with the nonlinear calculation. What is behind this variable?
Question
What results can I export from the RF‑DYNAM Pro add‑on module using the RF‑COM Interface ?
Question
For an imperfection, I get Warning No. 12211 saying that the members consist of differing rotations. What can I do?
Question
How does RF‑TENDON or RF‑TENDON Design consider the long-term losses due to creeping and shrinkage, relaxation of prestressing steel, and due to elastic deformation?
Question
Is it also possible to integrate the online service "Snow Load, Wind Speed, and Seismic Load Maps" into external applications?
Question
How can I get an overview of the purchased products and the license key distribution?
Question
Is it possible to generate an FE-mesh with elements that have more than four nodes?
Question
Is it possible to use a trial or a student version of RFEM 5 on a virtual machine?
Fire Resistance Design for Rib
Is it possible to perform fire resistance design for a rib?
Question
How can I correct Error No. 1602 referring to a missing line entry in the member definition?
Question
How can I correct Error No. 1663 referring to a missing rib entry in the member definition?
Question
Why is it not possible to select individually or simultaneously acting load cases in the "Combination Expressions" tab?
Question
For the min/max support forces, the maximum forces are only displayed graphically, even though it is possible to display both for the result combination. Why is that?
Question
Is it possible in RFEM to enter surface loads on a projected surface in the direction of a user-defined coordinate system?
Question
Why does form-finding warp membrane surfaces into each other?
Question
What is the meaning of the numbers under Design in the add-on modules?
Question
I have modeled a wall with basic reinforcement (diameter 12 mm, distance 15 cm, same inside and outside). This would result in the provided basic reinforcement of 7.54 cm²/m for each side. However, the module only shows one half (3.77 cm²/m) as the provided basic reinforcement inside or outside. Why?
Question
I have several surfaces with elastic foundations, which have line hinges among each other. Is the elastic foundation also applied in the area of the line hinges?
Question
Is it possible to perform design for a timber-concrete composite cross-section?
Question
I cannot set a shear panel and rotational restraint in the RF‑/STEEL EC3 add-on module. Why are these options inactive?
Question
In RF‑CONCRETE Columns, I get a design ratio > 1 for the fire resistance design. How can the design be fulfilled in the add-on module?
Question
How can I determine a drifted snow load for a sawtooth roof in the snow load generator?
Question
To evaluate the results, I have created a section through surfaces of the structure. However, in the result diagram, this section is displayed as longer than it is. Why?
Question
Why is it not possible to define the center node of an arc as a help node?
Question
How can I smooth continuous boundary lines of membrane cuttings?
Question
How can I change the page format in a 3D PDF?
Question
There is a note in the RF‑/JOINTS Timber - Steel to Timber add-on module saying that the member length is too short. What is the minimum length, and how can I avoid the problem?
Question
Where can I change font sizes in a printout report?
Question
When selecting the nonlinear method of check in the serviceability limit state design, there is the option to export the stiffness of the already cracked structure. Is it possible to recalculate the internal forces with these stiffnesses?
Question
How can I connect side-by-side sections to obtain a coherent cross-section?
Question
When determining the effective cross-section properties according to EN 1993‑1‑1, EN 1993‑1‑5, or EN 1999̩1‑1, SHAPE‑THIN displays a warning message saying that the effective widths are only determined for straight elements. What does this mean?
Question
How can I check in my FE model whether the loads applied by me are also introduced correctly in the model?
Question
How do I activate form-finding of a membrane surface?
Question
How can I graphically visualize different surface supports and display them in a printout report?
Question
Are the loads in the top view with a cross oriented downwards and those with a circle oriented upwards?
Question
How is it possible to avoid singularities on membrane surfaces due to form-finding?
Question
When dimensioning a column, the values of axial forces in the result combinations of the ULS differ from the values in the RF‑CONCRETE Columns add-on module. What is the reason for this?
Question
How do I determine the stiffness center of my structural system?
System Diagnostics in RFEM 5 / RSTAB 8 / SHAPE-THIN
How can I carry out system diagnostics in RFEM 5 or RSTAB 8 and send it to customer support?
Question
Where can I define the reference height for the reduction factors of a snow load according to SIA 260?
Question
What is the meaning of the brickwork class in the Material Library for masonry according to EN 1996‑1‑1?
Question
I get the error message HASP_UPDATE_TOO_OLD when trying to import an update for our network dongle. What can I do?
Question
How can I flatten the shape found using RF‑FORM‑FINDING?
Question
Which length is used for the distribution of the boundary line compensation in a surface?
Question
Why is the compensated cutting pattern length of a membrane surface incompatible with the defined compensation?
Why is the compensated cutting pattern length of a membrane surface incompatible with the defined compensation?
Question
What does "Mortar Joint" mean when using "Masonry" as a material with the standard EN 1996‑1‑1?
Question
How does the flattening process account for compensation when determining cutting patterns?
Question
The calculation of my model does not converge; what can I do?
Question
Can I also use RF‑SOILIN to calculate foundation bodies at different foundation heights in a model?
Question
How can I determine loads at particular geographic coordinates in the online service "Snow Load, Wind Speed, and Seismic Load Maps"?
Question
Is there a way to easily prevent RF‑SOILIN from recalculating the foundation every time the load in the governing load case is changed?
Question
What do the nine points refer to in the case of any cross-section (Z‑section) in the RF‑/STEEL Warping Torsion add-on module?
Question
Where can I find the log files created during the import or export?
Question
When I apply an area load to a surface with an opening, the load is not not accounted for at the opening. Is it possible to automatically consider the area load as a line load around the opening perimeter?
Question
I have designed a steel column with the RF‑/KAPPA add-on module in RSTAB, Version 4. When designing the steel column in Version 8 of RSTAB now, I get more cost-effective results. What could be the reason for this?
Question
Why are the results in the RF‑/STAGES add-on module not consistent with the corresponding load cases and combinations in the RFEM or RSTAB program?
Question
I cannot enter any cables in my model. What can I do?
Question
For a cross-section from the cross-section library of RFEM/RSTAB, the stresses calculated with RF‑/STEEL differ from the stresses of the same cross-section calculated with SHAPE‑THIN. What is the reason?
Question
How can I quickly cross the individual bays in a large model using bracing?
Question
For a better graphical display, it is necessary to mirror a line support. Is it possible?
Question
Why are some surface edges displayed in green on the wireframe display model?
Question
In some areas of the modeled downstand beams or ribs, there are also walls or pilasters. Is it necessary to separate and remove the downstand beams on the walls, or should they continue through them?
Question
What is the meaning of the action acting "Differently" when I define the action categories?
Question
The deformations of two adjacent members calculated with the RF‑CONCRETE Members add‑on module differ from each other. How is this possible?
Question
Which shear force is used for the shear design in RF‑CONCRETE Surfaces?
Question
What can I do to increase the performance when the model is very large?
Question
What is the recommended setting for the distribution of internal forces/stresses in Project Navigator - Display?
Question
Is it possible to automatically perform new form-finding of membrane surfaces with each structural change?
Question
Why does the "Undo" function only work for the last two or three steps (after that, it is grayed out)?
Question
Is it possible to use RFEM for modeling a channel that is distorted from a rectangular cross-section to a pipe cross-section?
Question
Why is it not possible to define eccentricity in the Z‑direction in my 2D model?
Question
Why is there not one load for each country in the online service "Geo-Zone Tool: Snow Load, Wind Speed, and Seismic Load Maps"?
Question
Why are the commands added in toolbars sometimes lost after the update?
Question
How can I model a curved beam in RSTAB?
Question
On closer inspection of the results, I noticed that the moment distributions in columns point in different directions or change signs.
Question
When calculating a result combination, I receive the "Warning No. 30014 – Incorrect addition of load cases in the result combination! The result combination contains load cases or load combinations with results containing second-order effects, which points towards nonlinear relationships and therefore cannot be added together..." What does this warning mean?
Question
Can I display the results of the individual load increments after the calculation?
Question
Is it possible to display the results of my model in several windows within an instance of RFEM/RSTAB? Is it also possible to print several graphics on one page at the same time?
Question
How can I consider the partial safety factor γQ,T in the automatic load combinations with 1.0 according to DIN EN 1992‑1‑1/NA: Chapter NCI 2.3.1.2 (3), or DIN EN 1990/NA Chapter NDP A.1.3.1 (4)? The value γQ,T = 1.5 is used by default.
Question
When importing a dxf file, I get a message saying that the dimensions of the model are larger than 10,000 meters. What should I do?
Question
Why is it not possible to load the OPE combinations in the RF‑PIPING Design add-on module?
Question
Can I also create guidelines in a user-defined coordinate system?
Question
Instead of displaying the results in the STEEL EC3 add‑on module, the message "Write Data() failed of module RF‑STEEL EC3" appears. What can I do?
Question
Why do I get Error Message 226 in RF‑CONCRETE Surfaces? The crack width analysis is not performed or the design ratio is "0.00".
Question
Can I save my load combinations and result combinations and import them again in other models?
Question
During the calculation, I get a warning that some elements are connected to the buckling panel, but are not defined like stiffeners (see Image 01). What should I do?
Question
Can I manually create load combinations in RFEM 5 or RSTAB 8?
Question
Is it sufficient to perform the calculation with surface elements, or is it better to use solid elements?
Question
When calculating a connection using the FRAME‑JOINT Pro add-on module, a message appears saying that the value is out of the valid range (existing value: 160, minimum value 200). What does this message mean?
Question
Why are the results in RFEM/RSTAB sometimes deleted when exporting the data to Revit?
Question
When performing fatigue design, I obtain very little or no design ratio for the members.What can be the reason?
Question
How do you use Dlubal parameters in a Revit interface?
Question
During the installation, I get a message from the Sentinel HASP Run-time installer.What can I do?
Question
How can the self-weight and other additional loads be considered in the form-finding process?
Question
How is shrinkage considered in a calculation with RF‑CONCRETE Deflect?
Question
I have several printout reports and would like to add one more. Is it possible to move the new printout report between two existing printout reports?
Question
Is it possible to reinforce a foundation with a pure reinforcing bar?
Question
How can I enter/find the following cross-section "I‑PAR 700/135/6.6/10.2/15" in the cross-section library?
Question
How can I specify different moduli of subgrade reaction for a large floor slab?
Question
I am performing a stability analysis according to the second-order analysis. Why is the partial safety factor γM1 used for the stress analysis here?
Question
How is it possible to model wall and ceiling slabs in a member model?
Question
How can I model a support of a member on a bracket with screws?
Question
What is the effect of the "Without membrane tension" stiffness type in surface properties?
Question
When I open the Windows calculator in Dlubal Software programs, an error message appears. In fact, the calculator will start, but it is not possible to transfer the results directly. Why?
Question
Why are no concrete stresses displayed in the RF‑CONCRETE Surfaces add-on module?
Question
How can I display my model without the color scale in the printout?
Question
When opening a model using the viewer, I get a message saying that the FE mesh needs to be deleted. Thus, the results will also be deleted. What can I do?
Question
Is it also possible to transform a generated load into a "real" member load?
Question
Is it also possible to design individual hollow sections using the HSS add‑on module?
Question
My structure is unstable. How can I identify the location of the instability?
Question
How can I generate a restraint or a spring for the support in RX‑TIMBER Glued-Laminated Beam?
Question
Our data are administered on a cloud server. Can I run a network dongle on this virtual server?
Language Setting for RX-TIMBER
How can I change the language in the RX‑TIMBER add-on module?
Question
Red values are displayed in the intermediate results of RF‑SOILIN. Why?
Question
Is it possible to open RX‑TIMBER files in RFEM and RSTAB?
Question
When calculating a result combination, why does RF‑/STEEL not determine the same maximum internal forces as in the results within the result combination itself?
Question
Can I transfer the sections from one model to another?Or do I have to redefine the sections?
Question
How can I create a blind hole in a solid?
Question
Why are my guidelines so long? Can I possibly shorten them a bit?
Question
There is no resultant for a section displayed in the selected partial view; what can I do?
Incrementally Increasing Loading
How can I incrementally increase loading?
Question
Is it possible to simply copy a model into another one?
Question
Is it also possible to apply a surface load inside the critical perimeter in RF‑PUNCH Pro?
Question
How does the license distribution work for the RF‑MAT NL add‑on module in the case of a network dongle?
Question
Which degrees of freedom are considered in the eigenvalue solver to determine the ideal elastic critical moment (Mcr) in the RF‑/STEEL EC3 add‑on module?
Question
What is the meaning of the "Consider only increasing loads" feature in the wind load generator?
Load Cases and Combinations for Design
In the add-on modules, do I use load cases or load or result combinations for the design process? Does the particular add-on module (for example, RF‑/FOUNDATION Pro) create the required load combinations automatically?
Question
Why are the stiffness modifications not taken into account when determining critical load factors in the RF‑STABILITY add-on module?
Question
Why is my linearly variable surface load not represented in a triangular shape, although I have set the minimum load value to zero?
Question
How can I save frequently used membrane materials in RFEM?
Question
During the calculation in SHAPE‑THIN, warning No. 280345 displayed in Image 01 appears: "Elements are crossing without connection. Do you wish to interrupt the plausibility check?” What should I do?
Question
Is it possible in RF‑CONCRETE Surfaces to model a prefabricated slab or an element slab with different reinforcement layouts; for example, a reinforcement layer in a precast element and another reinforcement layer in the cast-in-place concrete extension?
Question
How can I deactivate or modify the individual nodal supports in the model by load case?
Question
After updating to the latest version, the interface of the screen display will change. When I first started the program, the command buttons of the toolbar were not in the right place, as they usually are.
Question
Is it possible to analyze the effects of an hermetically sealed object with RFEM?
Question
How do I combine the effect of the wind load on a guyed mast from mean wind load and patch load according to EN 1993‑3‑1 B.4.3.2.5 (1)?
Question
Is it possible to design insulating glass using the RF‑GLASS add-on module?
Question
Why is no continuous, anticlastic shape about the principal axis found in the form-finding process for a conical membrane arrangement?
Question
The project files are located in the network. Is it possible that the same project structure is displayed for each employee in the Project Manager?
Question
How can I find crossing, unconnected members in a model?
Question
Why are the tolerance zones between the zone borders 5 km wide on the online snow load map of Austria?
Question
In RFEM or RSTAB, can I define temperature loads for members that have, for example, 350 °C at the member start and 200 °C at the member end?
Question
How is the collapse reinforcement considered in RF‑PUNCH Pro?
Question
How do I find extreme values of stresses or internal forces in a complex RFEM file?
Question
How can I obtain pressure contact with a failure at tension between a secondary member and a slightly curved membrane surface?
Question
Why do I get different results when calculating the stresses of flat, square, or octagonal steel, compared to the manual calculation?
The results deviate considerably, particularly in the case of shear stresses due to shear force and torsion.
Question
I get an error message in RF‑CONCRETE Members: "Set of members No. will be excluded from the calculation." What does this mean?
Question
What does the option Alignment of new elements in "Initial position" and "Tangential" in RF‑STAGES mean?
Question
When starting the calculation in RF‑CONCRETE Surfaces, I get the error message "Failed to calculate the deflection for the result combination". Why? What can I do to solve this problem?
Design of Sandwich Elements
Is there a possibility in RFEM 5 or in RF‑CONCRETE Surfaces to calculate walls as sandwich elements?
Question
In RF‑CONCRETE Members, I get an error message saying that the members of a set of members do not have identical orientation and the set of members will be removed from the calculation. What should I do?
Question
How can I generate load combinations automatically in an existing file retroactively?
Question
I have created a 2D frame and would like to assign a lateral and torsional restraint to the ridge. Do I have to enter an intermediate lateral restraint or a nodal support in RF‑/STEEL EC3?
Question
How can I display the center of a circle, an arc, an ellipse, and so on?
Question
Apparently, I have changed my settings unfavorably in the Display navigator. Is there any option to reset them to the default settings?
Question
Some engineers in our company often have to perform complex calculations with RFEM. Is it possible to transfer these calculations to a cluster?
Question
Does the activation of the partial safety factor γM have an effect on the calculation in RF‑GLASS?
Question
How is it possible to model a pure compression connection between two surfaces so that a wall leans against another wall?
Question
When starting the calculation, I get Warning No. 30015: "Incorrect addition of load cases in the result combination!" What is the reason?
Question
I used RCs for the calculation of my reinforced concrete surfaces. However, in the "Surfaces - Local Deformations" table, the "Corresponding Load Cases" are not displayed. Is there any way to find them?
Question
When creating a solid, I always get the message "Boundary surfaces are not closed at edges ..." What should I do?
Question
If I only select a member, a surface, or a solid, the rest is displayed in gray. Can I hide the remaining elements completely?
Question
When generating loads, I want the gable binders of a hall not to be subjected to loads from the wind on the gable wall. Is this possible?
Question
Is the punching load in RF‑PUNCH Pro taken from the support forces of line supports in the case of the design on a wall corner? Which lengths are decisive for applying the support forces?
Question
It is not possible to create a rib on certain lines in my model. Several error messages appear.
Question
Is it possible to install the Viewer for RFEM 5 or RSTAB 8 on an iPad or an Android tablet?
Layers of Glass Surfaces
How are the surfaces with a layer structure defined correctly in RFEM? I have only found the layer structure defined in the RF‑GLASS add-on module.
Question
The RX‑TIMBER add-on module has the "Edge Beam" feature. What exactly does this option do?
Convergence Behavior of SOILIN
Currently, I have the problem that the calculation in RF‑SOILIN takes an extremely long time and does not converge. What should I do?
Question
Is it possible to use RFEM and RSTAB on a Microsoft Surface Tablet?
Question
Is there any possibility in RFEM to rotate result values by 90°?
Question
Is it possible to create a scissors hinge between surfaces?
Question
When using my student license and a trial version, I get a watermark across the page in the printout report. Is it possible to deactivate it?
Question
Why does my calculation in the RF‑/ALUMINUM add‑on module take so long?
Question
I have to perform a recalculation of foundation in the existing structure and search for a design according to DIN 1045 or DIN 1054. In RF‑/FOUNDATION Pro, only the Eurocode is available. Do you have any other module for the foundation design?
Question
Is it possible to extend a line or member by a certain linear measure or to another line or member?
Question
Some nodes are lying outside the plane. What is the easiest way to shift them to the desired plane?
Question
Which forces must be exchanged between the RX‑TIMBER Glued‑Laminated Beam program and the RX‑TIMBER Brace program?
Question
Can Dlubal Software be used for calculation of the stiffening systems?
Question
In RF‑PUNCH Pro, Window "1.4 Longitudinal Reinforcement" shows all surfaces connected to the nodes selected for design. For example, in a punching shear design on a wall corner, the surfaces that actually represent the walls are also defined. I can also define a longitudinal reinforcement for these surfaces. Is this reinforcement applied somehow? Why do I see these surfaces in Window 1.4?
Question
Which analysis is used in RF‑STAGES or STAGES to calculate temporary loads and the generated combinations?
Question
How does RFEM calculate surfaces with plastic materials?
Question
Why do the results of the line support reactions differ from the surface results?
Question
Is it possible to increase the arithmetical design resistance of laminated safety glass according to DIN 18008‑1 (8.3.9)?
Question
Why is it not possible to activate the "Nonlinear Time History Analysis" option in the RF‑DYNAM Pro add-on module?
Question
RFEM and RSTAB crash at the moment of starting the program. I have installed BitDefender antivirus software on my computer. Why?
Question
Can I extrude a line locally into a surface?
Question
Some members are not considered for the load generation. Why?
Question
Why is it possible to switch off the individual design checks in RF‑/FOUNDATION Pro? After all, this poses a risk for the user to "accidentally" disable certain design checks and possibly design a foundation that is undersized?
FE mesh
Did I choose the right FE mesh size?
Question
Is there a possibility to show results only for a customized area?
Question
I have a foundation that is supported by adjoining frost aprons (distorting beam) in one direction (X- or Y-direction). From the determination of internal forces in RFEM, I get the horizontal support forces in the X- and Y-directions. This is correct. However, the foundations in the X-direction are supported due to the ice wall. Is it possible to "switch off" or neglect the support reaction from RFEM for the foundation design in RF‑/FOUNDATION Pro?
Question
Is it possible to customize the factor kc?
Question
Is it possible to transfer the customized display properties from one PC to another?
Question
How can the thermal prestress be taken into account for the design value of the glass resistance?
Question
After importing an .stp file, there is a free node near each member. Why are these nodes created?
Question
Is it possible to assign an orthotropic direction to a solid?
Question
What does Error No. 12303 mean?
Question
How can I determine the resulting force of a surface support or its contact stress in RFEM?
Question
How can I consider eccentric load introduction?
Question
My student version has expired. What should I do to continue using the programs?
Question
Is the cross-section program SHAPE‑MASSIVE only available as a 32‑bit version, or is it also available as a 64‑bit version?
Question
I have split a surface, is there any way to reverse the splitting?
Question
How can I display the member direction or orientation in my structure?
Question
I have problems when defining moving loads on continuous members. For Continuous Members 1 and 2, the initial directions are inverted, although they are displayed in the same direction.
Question
How is the minimum shear reinforcement according to DIN EN 1992‑1‑1 determined in RF‑PUNCH Pro?
Question
Can the loads from coating, for example, from covering of a member or icing, also be generated for a cross-section?
Question
In RFEM, I have the possibility to deactivate objects of a structure. Is this option also available in RSTAB?
Question
What is specified by definition nodes in the line release dialog box?
Question
For a design in the EL‑PL add-on module, I get the error "4) Invalid loading due to M‑T"; what can I do?
Question
For which countries can I use the snow load generator in RFEM / RSTAB?
Question
For which countries can I use the wind load generator in RFEM / RSTAB?
Question
I tried to access the cross-section library via the COM interface using the GetDatabaseCrossSection() command. Unfortunately, the objects are always empty; what can I do?
Question
I am calculating a symmetric surface model. However, the resulting stresses are not consistent. Have I done something wrong?
Question
I am having trouble changing the units from imperial to metric. Although I have selected the check box in the "Load Profile" dialog box, the units do not change. What did I do wrong?
Question
I would like to use FEA to calculate a bolt connection in RFEM. Does the material library provide an option to select the material according to the strength grade of the bolt (for example, 8.8)?
Question
In RSTAB, how can I select the side of eccentrically connected members on which the hinge is effective?
Question
The dimensioning in the graphical display in the RX‑TIMBER printout report is very confusing, depending on the structure. Is is possible to optimize it?
Question
Which parameters do I have to fill in if I want to apply a temperature member load via the COM interface?
Question
Does a calculation in RF‑SOILIN also work with solids?
Question
During calculation in RF‑SOILIN, I get Error No. 10739 with the message "The structure is above the terrain". What should I do?
Question
How can I change the font size in tables of RFEM / RSTAB?
Question
Does the student version of Dlubal Software also provide an interface between Revit and RFEM?
Question
If I install new versions of RFEM and RSTAB via msiexec, will the old versions be overwritten?
Question
Is it possible to define additional concentrated loads for a craneway girder in CRANEWAY?
Question
I have defined diagrams for member releases. How can I transfer this information to other computers?
Question
What is the meaning of the abbreviations of design situations in the "Combination Expressions" tab?
Question
In the Project Manager, the time a model has been worked on is indicated. How can I set this work time to zero?
Question
In my model, the arrows for support forces are no longer displayed. Why?
Question
I have modeled a curved line or a circle, but its axis system has a different length or circumference. What is the reason, and how can I unify the local axes?
Question
How can I define the failure criterion s, such as Tsai-Wu, for an orthotropic material?
Question
How can I design a floor slab by the manufacturer Lignotrend?
Question
How can I change the allowable thickness ranges for the material in RF‑/ALUMINUM or RF‑/STEEL EC3?
Question
Where can I find the user-defined limit parameters in RF‑LIMITS, so I can use them as a backup?
Question
How can I automatically combine my load cases for a road bridge?
Question
Is it possible to distribute network licenses via Dropbox?
Question
Are the models and presentations from Info Day 2019 freely available, and can you send them to me?
Question
How does the fire resistance design according to EC 3 work with the STEEL EC3 add-on module?
Question
The authorization of the program failed. The diagnostic file includes "Error 0x1772 (6002): Specified License Manager could not be found". Why?
Question
After generating surfaces from a few members, I can no longer mesh the model adaptively.
Question
How can I specify whether there is a rigid or a non-rigid stiffener for the calculation of the reduction factor for shear buckling in PLATE‑BUCKLING?
Question
Why do some external pressure coefficients have a value of 0 when generating wind loads?
Question
I entered a suspension crane in CRANEWAY. The buffers cannot be deactivated; what can I do?
Question
How can I create a bolted connection between two surfaces?
Question
Can I start the project manager separately from RFEM or RSTAB?
Question
How long does it take to be able to work with your programs?
Question
A beam is welded with fillet welds to an end plate. How can I calculate the weld stresses?
Question
Where can I download the SHAPE‑MASSIVE program as a student version?
Question
I would like to test the "XY" add-on module. Could you please send me a trial version?
Question
Why are the serviceability limit state designs in STEEL EC3 different for a result combination (RC) from load cases (LC) and an OR result combination from load combinations (CO)?
Question
Is the RF‑CONCRETE Surfaces add-on module able to determine and calculate a required reinforcement with the corresponding diameter for the design without the direct crack width analysis according to EN 1992‑1‑1, 7.3.3?
RF-LAMINATE Library
How is it possible to display the RF‑LAMINATE library? We would like to check that it is up to date.
Question
Are there no longer any 32-bit versions of RFEM and RSTAB?
Question
Why is the "By taking into account the deformation ratio of the longitudinal reinforcement" method inactive in the detail settings for the SLS design in RF‑CONCRETE Surfaces?
Question
Can I enter the maximum internal forces for line releases in RF‑LIMITS?
Question
How can I retrace the detailed results or the intermediate results of the serviceability limit state design checks in RF‑CONCRETE Surfaces? For the required reinforcement, the SLS info button is inactive.
Question
How do I add a member load at an angle to the member axes?
Question
I would like to export a result using isolines or isobands and import it again later. Is this possible?
Question
After the calculation, I get a message about large deformation. Why can I not find this deformation in the results?
- 002913
- RF-DYNAM Pro | Natural Vibrations 5
- RF-DYNAM Pro | Equivalent Loads 5
-
- RF-DYNAM Pro | Forced Vibrations 5
- RF-DYNAM Pro | Nonlinear Time History 5
- DYNAM Pro | Natural Vibrations 8
- DYNAM Pro | Equivalent Loads 8
- DYNAM Pro | Nonlinear Time History 8
- Concrete Structures
- Steel Structures
- Timber Structures
- Mechanical Engineering
- Process Manufacturing Plants
- Bridges
- Dynamic and Seismic Analysis
- Nonlinear Dynamics
- Eurocode 2
Question
When I create an image for a time course in DYNAM Pro and add it to the printout report using the clipboard, this image is very blurred. What can I do?
Question
Does RFEM / RSTAB provide a feature that can determine the maximum internal forces from different load combinations - a kind of an envelope?
Question
How can I open RF‑TENDON and RF‑TENDON Design?
Question
I would like to download the RFEM and RSTAB installation packages. However, the download crashes over and over again. Is the Dlubal Software web server broken?
Question
Is it also possible to determine the stiffnesses of an existing column instead of a fixed nodal support?
Question
Is it possible to run a single-user USB dongle on a dongle server?
Question
When calculating a temperature load case, I get Error No. 10419 "The temperature load is ineffective". What should I do?
Question
After updating to the current version, I get a message saying that surfaces will be excluded from the design. Several materials are displayed in red. Why?
Question
When trying to run RF‑TENDON, I get the message "The application is locked by external COM connection." What is the problem?
Question
Is there any possibility in the program to obtain axial forces and moments from the calculated stresses for solids?
Question
Is there any option to generate a "response spectrum according to the standard" with user-defined parameters in the RF‑DYNAM Pro add-on module?
Question
What is the fastest way to create generated loads for multiple load cases without having to reenter the boundary points each time?
Question
Why do the results of members and sets of members differ in the design?
Question
Can I use my own materials in RFEM or RSTAB using the "Concrete - Reinforced Concrete Design" add-on module?
Question
The calculation in RFEM takes a very long time. However, the processor utilization is low. How can I speed it up?
Timber Joints According to EN 1995-1-1, Section 8.2.2
Is it possible to use the JOINTS add-on module to design timber-to-timber connections according to EN 1995‑1‑1, Chapter 8.2.2, in RFEM 5 and RSTAB 8?
Question
In the RF‑/DYNAM Pro add-on module, there are the parameters "Modal mass", "Participation factor", and "Equivalent mass". The manual contains the formulas, but an explanation and hints on how to use them would also be helpful.
Question
For the fire resistance design, the modulus of elasticity is reduced. I assume that this applies to the design first. However, to what extent is a stiffness change in the structural system and thus a load redistribution considered?
Question
I would like to participate in a Dlubal webinar for the first time. What do I have to pay attention to after being registered?
Question
My project manager no longer shows thumbnail models. I cannot dock the button for it. What should I do?
Steel Bracket
I have to dimension a wall bracket as a steel brackets that I have modeled as surface components in RFEM 5. Which add-on module can I use to design it?
Question
When using nonlinear material, I get an error message; what should I do?
Question
Is it possible to display the FE mesh on a deformed structure?
Question
I cannot calculate members with double rectangular cross-sections and linearly variable cross-section height in TIMBER Pro. What is the reason?
Question
I would like to design banisters, so I have created a set of members for this. The cross-section is a hollow section. Can the stability analysis be carried out on the entire structure, or do I have to convert it into an equivalent member design with the specification of all supports in STEEL EC3?
Question
I would like to obtain the reinforcement results (As,-z(top), As,+z(bottom), asw,V,stirrup) for a beam from my RFEM or RSTAB file and import them into AutoCAD. Using the "Export" → "DXF" dialog box, I can only read out the geometry. Is there any option for this?
Question
Where is the consequences class defined in RX‑TIMBER?
Question
Can I hide the text of standards for the material description; that is, turn it into a short form?
Question
For a cross-section in my model, the STEEL EC3 add-on module uses the incorrect yield strength depending on the thickness of the structural component. What can be the cause?
Question
I get the following error message: Error No. 30426 - Error No. 1 The Model is not supported!What is the problem?
Question
I would like to edit a model—add nodal supports or modify members, for example—but I get Warning No. 1145. What can I do?
Question
I get the expression "-1.#J" for rigid and hinged limit stiffness. What should I do?
Question
Can I save my model automatically after the calculation?
Question
Why are the results of a result combination from load cases different from the RC from load combinations?
Question
Is it possible to change the relation of the deformation results to a user-defined coordinate system?
Question
I would like to perform the fire resistance design using the EC3 add-on module. Is it possible to intervene in the program in such a way that I can use my own temperature curve instead of the standard one?
Question
Is it possible that the formula editor has a problem with units in combination with the non-dimensional parameters?
Question
Why does RFEM not find the equilibrium for a load directed upwards on a membrane roof curved downwards?
Question
Is it possible to run RFEM or RSTAB on a terminal server?
Question
For a calculation, I activated the "Detailed Calculation" option. Have the support loads already been specified with the reduced dynamic coefficient for the design of the substructure?
Question
What is the meaning of the abbreviations for the crane loads in the CRANEWAY add-on module?
Question
I used double members for the member input. Do I have to consider anything else, or is it better to enter a member with double cross-section properties?
Question
How does RF‑/STEEL EC3 design Class 4 cross-sections? Does "Class 4" take into account the existing loading?
Question
RF‑/STEEL EC3 does not perform a stability analysis with torsion. Is the design with the warping torsion analysis independent of it?
Question
I would like to calculate a lifting beam hanging on a crane. Why does the program always show me an instability during the calculation?
Question
How do I deactivate a softlock?
RF-MAT NL Add-on Module
I have purchased the add-on module RF‑MAT NL, but I cannot find it anywhere.
Question
How can I change the value of the gravitational acceleration?
Question
Which stiffnesses does RFEM use for orthotropic hollow core slabs with rectangular cavities?
Question
Is it possible to display the loads of the secondary seal of an insulating glass pane?
Question
How can I assign all related objects (for example, in a set of members) at the same time?
Question
Why are the axes u and v in the member load window grayed out?
Question
For a stability analysis in RSBUCK, I get the following error message: "The model is not connected because there are independent partial models." What does it mean and what can I do about it?
Question
I have defined a nodal release, but it seems the internal forces are fully transferred to the released object.
Question
For the result interpretation and documentation, I would like to display the vertical line support results clearly arranged in a plan view.Which setting should I select for this?
Question
Are the Dlubal webinars recorded and uploaded to Youtube?
Question
How can I deactivate the individual internal forces for the design in CONCRETE or RF‑CONCRETE Members (for example, torsional moment M‑T for ribs)?
Question
Why is the cut-to-grain angle not taken into account when designing a tapered beam?
Question
What is the sign definition for the line release nonlinearity?
Question
I would like to graphically display support loads on my screen. Unfortunately, it no longer works, for some reason.
Question
I have downloaded installation packages from the Dlubal website. When trying to install them, I get a warning message from my security software that the installation packages contain malware. Is that really the case?
Question
How can I hide the description of sections?
Question
In the material library for masonry, there is the "g/t" ratio. What does this mean exactly?
In the material library for masonry, there is the "g/t" ratio. What does this mean exactly?
Question
In FOUNDATION Pro, I get extremely large foundations of my structure or I have to enter a very high loading to satisfy the design of the highly eccentric loading in the core. What can be the reason?
Question
The printout report is quite sluggish. How can I increase the performance?
Question
Is it possible to integrate several cross-sections into different materials when performing a flexural buckling analysis, or how can I apply several cross-sections to each other?
Question
For a deformation analysis of my surface model in RF‑CONCRETE NL, I get implausibly high values. What can be the reason?
Question
I would like to save foundations with certain dimensions as a template in the database. Is this possible? The button for this is disabled in Window "1.2 Geometry".
Question
Why does the calculation after changing surface stiffnesses into "Without membrane tension" take a long time? How are they calculated?
Question
I cannot select the intersections of lines of a background layer using the object snap. Why?
Question
What is the easiest way to simulate a cushion for the RF‑FORM‑FINDING add‑on module?
Question
RSTAB does not yet use several cores to the same extent as does RFEM. Is an optimization on multicore processors also planned for RSTAB, as this has a significant influence on the processor selection?
Question
After starting the calculation, RF‑/FRAME‑JOINT Pro jumps to Window "1.4.1 Beam Right - Part 1" and the following message appears: "Value is out of range. Existing value: 6.00 - Min value: 7.50". There seems to be no connection to this window. Where is the error?
Question
I have no results displayed after calculating my model. However, the add-on modules show the results.
Question
Where can I download a valid version if I do not have a Service Contract?
Question
How can I display the free loads within a certain area only?
Question
I have to install several Dlubal program packages on my computer. Is it possible to install all program packages with just one click?
Question
In the case of the serviceability limit state design (for example, of a steel beam), the precamber is not taken into account. Is this a program error or is my entry incorrect?
Question
How can I connect a surface to members as hinged?
Question
I have noticed that the comments (for example, for the cross-sections in the add-on modules) do not correspond to those in RFEM/RSTAB.
Question
Can I define soil layers for a soil profile with soil parameters myself?
Question
How can I find out how the self-weight of a foundation plate or any imposed load on the foundation plate is considered in the design checks?
Question
I have to design a complex solid. Why is the respective storage capacity of the result file so large? Is it possible to reduce this?
Question
We have modeled and calculated a steel hall in RSTAB. In parallel, we want to calculate the corresponding floor slab in RFEM. Can we transfer the "foundation loads" (the support loads of the hall columns) to this RFEM model and recombine them for the floor slab?
Question
How can I display the stiffness matrix of the surfaces from the RF‑LAMINATE add-on module in the printout report?
Question
In RF‑PUNCH Pro, I use the sector model to determine the load increasing factor ß. However, due to singularities in the surface internal forces, the ß values are sometimes set too high. How can I handle this?
Question
Why is the "without glue at narrow sides" check box not selected by default in the RF‑LAMINATE add-on module?
Question
Why are all of the stresses not displayed in the Results navigator? Even for internal forces, not all options are displayed.
Question
When trying to calculate a member structure, I get Error Message 1677 "Member No. 75: Invalid effective length factors."
Question
How is the effective depth calculated in RF‑CONCRETE Surfaces?
Question
Why does load generation by plane or cells give partially negative values in the corner points?
Question
In RFEM/RSTAB, I use cross-sections with the values defined by direct input. How do I get the RF‑/STEEL add-on module to consider my cross-sections?
Question
Is it possible to design user-defined material in the individual add-on modules?
Question
An update of my programs is available. How can I ensure that my data will not be lost?
Question
When generating an FE mesh, an error message appears. It says that the tolerance for the integration of nodes into lines is too large. What should I do?
Question
Can I design ultra-high performace concrete (UHPC) in RF‑/CONCRETE?
Question
Do you have a program for designing columns restrained in concrete? It is not about the design of the bucket, but about the required embedment depth, the provided concrete stress, the check of the shear stress in the column, and so on.
Question
I get a note that the surface will not be designed, because it is divided into several components. Why?
Question
I am using the PLATE‑BUCKLING add-on module and need more detailed information on how the critical buckling stress for the column buckling behavior is calculated. The stiffeners end before the edges. Is the eigenvalue of the stiffener calculated as a member with the effective slab width?
Question
Is it possible to have the adaptive FE mesh generation applied on just one surface?
Question
Why is an incorrectly generated load displayed? In the Project navigator, it is displayed in red.
Question
When trying to calculate a material from the "Aluminum" category in the RF‑/EL‑PL add-on module, I get an error message. What is the reason for this?
Question
I have received a new V2C file for the network license.
When trying to install it on the license server, I receive the message
Error Code 55: HASP_UPDATE_TOO_NEW
or
Error Code 54: HASP_UPDATE_TOO_OLD
What can be the reason?
Question
How can I use RFEM to check if my model has been buoyed, for example, when exposed to groundwater?
Question
Why is the sum of the loads different from the sum of the support forces? What is the cause of this?
Question
My model should be symmetric, but the support reactions reflect unsymmetric loading or modeling. What can I do?
Question
Can I check in the program whether the totals of the support forces match the sums of the loads?
Error when Starting Program
When trying to run RFEM 5 / RSTAB 8, the message appears:Sentinel HASPFailed to create the self-socket with error 10093/WSANOTINITIALIZED.Likely, Winsock DLL is malfunctional or was unloaded while the HASP API is still in use.This is an unrecoverable error!Aborting...How can I solve this?
Sentinel HASP
Failed to create the self-socket with error 10093/WSANOTINITIALIZED.
Likely, Winsock DLL is malfunctional or was unloaded while the HASP API is still in use.
This is an unrecoverable error!
Aborting...
Question
In my model with many curved members, the coordinate systems of the members are not aligned uniformly. What can I do to improve this?
Question
Why do I obtain a bending moment in the surface in the area of the column in my model, even though the surface has been provided with a line hinge?
Question
Why does the web service show "ERROR: Map not found."?
Question
Why are the results deleted when opening an RFEM 4 / RSTAB 7 file in RFEM 5 / RSTAB 8?
Question
Is it possible to group single objects (surfaces members ...) in RFEM and RSTAB?
Question
Why is not possible to create any dimensions? I cannot select any nodes or members. Points and nodes cannot be snapped.
Question
How can I consider a member offset at a particular connection point?
Question
Why do I get duplicated values for the load generation "Conversion of Area Load to Member Loads"?
Question
How can I integrate a WORD file into a printout report?
Stresses of Glass Pane
When calculating a glass pane with RFEM, no stresses are displayed. Is there an error?
Question
I just have to calculate an open hall with low roof loads and, compared to them, relatively high wind loads. In theory, it is necessary to perform the lateral-torsional buckling design of the bottom flange. Unfortunately, the combination 1.0*G + 1.5*W is missing.
Question
Can I also perform fatigue design with Dlubal programs?
Question
I have defined springs on the upper chord of my crane girder laterally. Now, the allowable deformation is calculated according to the distance of the springs; how can I change it?
Question
Why do I have to define a soil profile in FOUNDATION Pro? I have already specified the allowable soil pressure.
Question
For design in RF-GLASS according to DIN 18008, I have to carry out the calculation of the insulating glass units with laminated safety glass once with the full coupling and once without the coupling. Is it possible to do this only in one model and one calculation?
Fatigue Design of Reinforced Concrete
How can I perform the fatigue design of reinforced concrete and prestressed concrete in RFEM 5? I have found a result combination for fatigue, but cannot find the design in the add-on modules.
Question
Is it possible to perform the calculation in 2D for the design of insulating glass units made of laminated safety glass, or are the solids always used automatically for the insulating glass?
Question
In the graphic printout properties, I have defined an absolute width for the color scale.However, it is not applied. Why?
Question
For design, I need the load combinations from 1.00*G + 1.50*Q. How can I generate them automatically?
Question
How can I quickly create an arc (catenary) with RFEM / RSTAB?
Question
Is there any possibility to influence the distribution of loads? We would like to influence the stiffnesses of the walls, but we did not find an option for this.
Question
After the calculation, only the maximum result values for the deformations are displayed. Can I also display all nodal deformations?
Question
Why is it not possible to select sets of members for the serviceability limit state design in the respective design modules? I cannot specify sets of members under "Serviceability Data".
Question
I use rotated surfaces in my model. Now, it takes a long time to open and edit the file. What can I do?
Question
I do not understand the error message "Line is loaded, however, it does not belong to the surface" and I cannot find any input errors.
Question
The pages of my printout report are displayed in landscape format. Is it possible to change that?
Question
Is it possible to display the intermediate results - for example, of STEEL EC3 - in the printout report?
Question
How can I upload an update for my network dongle on the server?
Question
In the graphical display, my members are overlapping, although this should not be the case of the cross-section dimensions and the distance. How can I fix this?
Question
How can I quickly export a model, including all loads, into an EXCEL file and import it later?
Question
How can I hide the scale in a graphic in the printout report?
Question
After entering the support widths in the RF‑CONCRETE Members add-on module and starting the calculation, the following error message appears: "The support width is too wide!" What should I do?
Question
Why does the add-on module start in a demo version, even though I have imported a current and valid authorization for it?
Question
In RFEM, it is possible to display additional information about the result distributions of line supports in the Display navigator. What is the interpretation of these values?
Question
Is it possible to set a plastic calculation of the internal forces in RSTAB, or are the internal forces exclusively calculated elastically?
Question
How can I find out which lengths of a cross-section are used?
Question
Is it possible to reconnect shared lines or members?
Question
How is the sliding resistance determined in FOUNDATION Pro?
Question
After purchasing a new mouse, I cannot rotate my model by clicking the wheel + Ctrl. Is there a setting in the program that can fix the problem?
Question
Is it possible to display the results of the modulus of elasticity from state II (calculation with RF‑CONCRETE Deflect) by element?
Question
Is it possible to display a critical temperature in the fire resistance design?
Question
I applied a load "incrementally". Is it possible to save the results of the individual steps and evaluate them after the calculation?
Question
Why is it not possible to set the distance of nodal forces to zero?
Question
How can I multiply cross-section values quickly and easily with a factor?
Question
It takes a long time to save my structure. What can be the reason?
Question
An attempt to design several connection nodes with the same geometry fails. According to the message, the connection geometry is different.
Question
How do I superimpose generated equivalent loads from the seismic analysis?
Question
I designed a wall with RF‑CONCRETE Surfaces. On the outside and inside, the program shows me the same reinforcement amount [cm²/m]. Do I have to enter As,top + As,bottom now? Or only one value (top or bottom)?
Question
How can I retrieve the results of the STEEL EC3 add-on module, related to a load case or a cross-section, via RS‑COM?
Question
Due to a hardware change, we have to switch from Windows 7 to Windows 10. Can Dlubal programs run on Windows 10?
Question
I get warning No. 11006 "The free load is not used on any surface", even though the load lies exactly on a surface edge. What can I do?
Question
The authorization file does not appear to be accepted. Is this damaged?
Current Status of NET-SOFTLOCK
How can I send the current status of a NET-SOFTLOCKS to Dlubal Support?
Question
What does the design information mean:
Geometry error left side:
End plate of the girder: Lambda2 >1.4
Column flange: Lambda2 >1.4
I cannot find an explanation in the manual or online.
Question
I have created the lines for an opening. How can I generate the opening?
Question
I try to understand the fatigue calculations. I think these calculations are only presented folded in UC in the output document (see beneath). Is there a way to unfold the calculation?
Question
When I rotate the mouse wheel and zoom in or out, the view always jumps in small steps.
Can I zoom or enlarge or reduce the view continuously?
Question
How can I rotate the isometric view onto my entered structure?
Question
Why it is not possible to design a biaxial bending with the RF‑/JOINTS add-on module?
Question
How do I specify in FOUNDATION Pro which load is used for the design of the first core width, and which load is used for the design of the second core width?
Question
For the foundation design, I need the results (support reactions) of the design situation for "static equilibrium". How do I get them?
Question
After an unexpected termination of the program, the crash reporter does not open. What can I do?
Question
I import an IFC file from another CAD program in RFEM or RSTAB via the CAD/BIM option. During the conversion, I get error messages. Also, the members are not converted correctly.
Question
In an older model of RFEM 4 or RSTAB 7, I designed a SHAPE‑THIN cross-section or a general cross-section in STEEL EC3. At that time, cross-section Class 1 or 2 was determined. Now, I have opened the model in RFEM 5 and the cross-section is only classified as Class 3 or Class 4. Why? Was the design more cost-efficient at the time?
Question
The stability analysis in STEEL EC3 has been exceeded. What can I do?
Question
I have imported an IFC file via the CAD/BIM interface. How does the conversion of IFC elements into members / surfaces / solids work?
Question
How can I enter the skin friction of bored piles correctly?
Question
The printout report of the STEEL EC3 results is too long. How can I reduce the content to a minimum?
Question
How do I get the internal forces and stresses on a surface edge?
Question
In my model, I obtain different results in comparison with a manual calculation and other software. What could be the reason?
Question
Is it possible to divide a line or a member?
Question
Why do the limit stresses not match the calculated stresses when using a nonlinear material?
Question
What can I do if the network licensing does not work, or how can I test if the required port 1947 is malfunctioning?
Question
The automatic detection of integrated objects in a surface does not work.When trying to integrate them manually into the surface, a message appears saying that the lines or openings do not lie in the surface.
Question
Which internal forces are used for design in the RF‑CONCRETE Surfaces add-on module?
Question
How can I create cross-sections with holes along the x-axis in RFEM or RSTAB?
Question
How can I create a line where two arbitrarily shaped surfaces intersect in space?
Question
Why is the deflection of a reinforced concrete beam in RFEM / RSTAB in State 1 different from my manual calculation?
Question
Which cross-sections and which cross-sections as reinforcement of a crane runway girder are allowed for the design in the CRANEWAY add-on module?
Question
I use the Firefox web browser with the add-ons "Adblock plus" and "NoScript". Which server should I trust to use the online service "Snow Load, Wind Speed, and Seismic Load Maps"?
Question
How is it possible to enter the values for skin friction and pile end resistance when displaying bored piles for the design of member elastic foundations in the program?
Question
The image on the title page of my printout report is incomplete. What can I do?
Question
Is it possible to export printout reports from one model to the other?
Question
Why is the bending moment diagram in the inclined girder different from my manual calculation? Normally, no bending moments should be calculated here.
Question
Is it possible to change the font size in the window for result diagrams?
Question
Is it possible to calculate bridge cranes, including the endcarriages, with CRANEWAY? Which cross-sections are used for crab rails?
Question
Can I use a network dongle (USB hardlock) on a virtual server?
Question
No internal forces are displayed for result members in my model. How can I change this?
Question
I have a software license for RFEM and installed it on my laptop. I imported the license to my PC using "Transfer Software". Now, I would like to use the license on my laptop again. However, RFEM opens directly in the demo version. Is there any way to get back to the authorization?
Question
Is it possible to automatically consider the system strength coefficient ksys or the coefficient for considering the local load concentration km,loc in the cross-laminated timber design with RF‑LAMINATE?
Question
The spring stiffness of line supports is given in kN/m²; why?
Question
Is it possible to model a glass corner made of insulating glass in RFEM?
Question
I have defined several load cases and would also like to apply permanent prestress as a member load. To which load case should the prestress be assigned?
Question
How is coupling between individual layers controlled in the RF‑LAMINATE add-on module?
Question
In the RF‑CONCRETE Surfaces add-on module, I get a design failure for the serviceability limit state (SLS) and no values are displayed for the steel stresses. Also, Message 239) is displayed. Why?
Question
Can I calculate or design composite concrete-concrete cross-sections with RFEM?
Question
I would like to select a material of the Masonry type in the Material Library. Why is the library in the Masonry category empty?
Question
I have modeled a cross-section with point elements in SHAPE‑THIN. However, these point elements are not displayed when importing the cross-section into RFEM/RSTAB. Why?
Question
Our NET‑SOFTLOCK has CLONED status and has been replaced. How can I remove the old NET‑SOFTLOCK from the Admin Control Center?
Question
When importing model data from Excel, only values are transferred instead of formulas. What can I do?
Question
How can I create a user-defined material?
Question
How can I export or import a single user-defined material?
Question
How do I obtain the maximum column load in my RFEM 3D model?
Question
It seems that version RFEM 5.18.01 and Halfen HDB 13.21 are not compatible. In RF‑PUNCH Pro, I get an error message saying that the design program Halfen HDB cannot be found. However, I have it installed and registered.
What can I do?
Question
When evaluating the results, it is noticeable that very high axial forces arise in some FE nodes; for example, due to temperature load cases. How can I model surfaces to avoid unrealistic effects?
Question
Our server has no Internet connection. How can I activate the new NET softlock?
Question
The object snap is displayed with a distance from the snap point. Why, and how can I fix it?
Question
How can I change the units for the required reinforcement in RF‑CONCRETE Columns? I always see [m²] instead of [cm²].
Question
Can I use surface releases to separate two overlapping surfaces?
Question
How many soil samples do I have to define in RF‑SOILIN to obtain realistic results?
Question
I would like to calculate a hall frame with loads from a crane runway. It is not quite clear to me what the various action categories denote. Can you explain it to me?
Question
Although I have selected "simultaneously" for several load cases within one action category, load combinations are also generated that do not act simultaneously.
Question
Is it possible to "borrow" licenses from the server?
Question
Plastic stresses are not displayed in SHAPE‑THIN. What is the reason?
Question
How can I check if the cross-section modeled in SHAPE‑THIN is interconnected?
Question
When importing an SCIA-Engineer (*.xml) file, I get an error message saying that the definition file *.xml.def was not found. What should I do?
- 002628
- ALUMINUM 8
- ALUMINUM ADM 8
-
- RF-ALUMINUM 5
- RF-ALUMINUM ADM 5
- RF-STEEL 5
- RF-STEEL AISC 5
- RF-STEEL AS 5
- RF-STEEL BS 5
- RF-STEEL CSA 5
- RF-STEEL EC3 5
- RF-STEEL Fatigue Members 5
- RF-STEEL NTC-DF 5
- RF-STEEL SIA 5
- STEEL 8
- STEEL AISC 8
- STEEL AS 8
- STEEL BS 8
- STEEL CSA 8
- STEEL EC3 8
- STEEL Fatigue Members 8
- STEEL SIA 8
- KAPPA 8
- RF-KAPPA 5
- LTB 8
- RF-LTB 5
- Steel Structures
- Stress Analysis
- Stability Analysis
- Eurocode 2
Invalid SHAPE-THIN Cross-Section
In a design module, a SHAPE‑THIN cross-section is classified as an invalid cross-section type and the design is thus not possible. What is the reason?
Question
How can I consider continuity effects in load generators?
Question
When trying to calculate a file, I get warning No. 1145. What is the reason for this?
Question
After importing the support loads using the "Import Support Reactions as Loads" function, I noticed some deviations in the load sums: The loads in the new model are much greater!
Question
How can I determine the calculation time?
Question
In some windows, the sections are cut off so the buttons or functions of the program cannot be reached. How can I fix this?
Question
Is it possible to model line supports in RSTAB in order to simulate a linear foundation under a beam, for example?
Question
There are no load case numbers (LC1, LC2, LC3, ...), but action categories (G, Qw, Qs, Imp) displayed for load combinations. Where can I set this?
Question
Can I calculate the spring stiffness of a foundation plate in RFEM 5 or RSTAB 8 with RF‑FOUNDATION Pro and apply this in RFEM?
Question
Is the shift rule or the anchorage length of the longitudinal reinforcement already taken into account in the reinforcement proposal?
Question
When specifying loading in Window 1.4, does the S class refer to the crane or to the crane runway?
Question
When importing the authorization file, I get an error message saying that the authorization file cannot be copied to the destination folder. What should I do?
Question
I have modeled a contact solid with objects connected on both sides at different locations. An error message appears: "Error when generating FE mesh!"
Question
When clicking on a sheet or a graphic, the printout report always loads for a few seconds. Furthermore, the document is rebuilt on almost every click. How can I prevent this?
Question
What is the difference between RF‑/FE‑LTB and RF‑/STEEL Warping Torsion? Both calculate with the 7th degree of freedom.
Question
I am designing a single-symmetric cross-section (T‑section) and get the message "Non-designable: ER056) The General Method is applicable only for I‑sections." Why?
Question
Can I see the support forces from the calculation of STEEL Warping Torsion?
Question
When using plastic material, should I perform the calculation according to the second-order or large deformation analysis?
Question
I would like to calculate warping torsion with the influence of the second-order analysis, but without imperfection. How does this work?
Question
The results from STEEL Warping Torsion seem far too great to me. What could be the reason for this?
Question
A moment distribution in STEEL Warping Torsion fails or the sign is changed from one x‑location to the next. What could be the reason for this?
Question
Is it possible to use formulas when entering values for the rotation of an object; for example, 180°/10?
Nonlinear Design
Why do I need the RF‑CONCRETE NL add‑on module for the stability design with RF‑CONCRETE Members? EC 2, Section 5.8.6, only speaks about geometric nonlinearity.
Question
When creating a printout report, my model is displayed on the cover sheet. Can I change the image afterwards?
Question
I always design all members and sets of members in a single design case. Is this procedure correct, or are there any problems?
Question
Is it possible to place the description of cross-sections and materials in the middle of a member?
Question
Why are the members that are close to each other connected in the calculation?
Question
The design is not successfully accomplished in RF‑/STEEL or in RF‑/STEEL EC3. RF /STEEL EC3 displays the warning "Maximum allowable thickness of material exceeded". What should I do?
Question
Are the boundary conditions transferred from RFEM/RSTAB when performing the analysis with RF‑/STEEL Warping Torsion or with the General Method in RF‑/STEEL EC3?
Question
Where do I find the connection moments due to the applied rotational restraint in RF‑/STEEL EC3?
Question
When inserting blocks, the sets of members defined previously are not transferred. How can I insert the sets of members as well?
Question
Where do I define load eccentricity in RF‑/FE‑LTB?
Question
My cross-section is classified in Cross-Section Class 1. Are plastic hinges taken into account automatically?
Question
Is it possible to print out multicolor scales aligned side by side?
Question
What is the effect of the "Use selected method also for calculation of all supported cross-section types" option in RF‑/STEEL Plasticity?
Question
Does RSBUCK take into account the stability problem of lateral-torsional or torsional-flexural buckling?
Question
What is the difference between LW and LT in Window 1.5 "Effective Lengths - Members" and Window 1.6 "Effective Lengths - Set of Members"?
Question
What does the "R" in RFEM and RSTAB stand for?
Question
The higher the basic reinforcement defined in RF‑CONCRETE Surfaces, the higher the required reinforcement determined by the add-on module. Why?
Question
I have received an RFEM file with the file extension .rf5t or an RSTAB file with the file extension .rs8t and cannot open it. What should I do?
Question
In result window 2.1 "Punching Shear Design", I get error No. 56 "The FE mesh is not dense enough". How can I set the mesh?
Question
How can I change the consequences class for the automatic load combination in compliance with Annex B3 of EN 1990?
Question
Are there any recommendations or literature and standard references to the "Limit Values for Stability Analysis" settings in Details of RF‑/STEEL EC3?
Question
I am performing an analysis according to General Method 6.3.4 EN 1993‑1‑1 and have activated the addition "Adapted Method According to Naumes". The critical factor α*crit is displayed in red. Should I be worried?
Question
Why is the option to increase the material factor ε grayed out in Details - Ultimate Limit State?
Question
I have imported a SHAPE‑THIN cross-section and calculated it using STEEL EC3. Why is the cross-section not designed plastically?
Question
I am getting the message "Torsion on Cross-Section Class 4". Why does this appear and what can I do?
Question
I have a cross-section where local buckling can be neglected. Can I classify the cross-section manually and thus avoid Class 4 of the cross-section?
Question
How can I change the buckling curve of a cross-section?
Question
I am analyzing a member model and have activated warping torsion. Why is the warping analysis not performed?
Question
I have a sandwich panel and would like to use it for structural stabilization of a beam. However, it is only possible to select trapezoidal sheets or purlins. What can I do?
Question
Why is the effect of cross-section deformation on rotational restraint grayed out?
Question
I get an error message saying that my cross-section library was not found or is damaged. What can I do?
Question
Can I change the stiffness of a surface out of its plane?
Question
I would like to include formulas for design checks in the printout report of STEEL EC3. How does this work?
Question
When performing a design in RF‑CONCRETE Members, I get Error 2212: "The rib is not supported". How can I perform the calculation?
Question
In the RF‑STAGES module, I get a message about instability. RFEM calculates the model without problems. How can I solve this?
Question
Where can I adjust the brightness of the hidden objects in the printout report? These colors are too intense for me.
Question
Can I enter an earth covering in RF-MOVE Surfaces through which the load distribution width of concentrated loads is automatically taken into account?
Question
In RF‑/STEEL EC3, I activated gamma_M1 for the calculation of cross-section resistance, as I want to cover the stability analyses with the second-order analysis and imperfections. However, the cross-section analysis for my design is performed with 1.0 in Germany. Why?
Question
Is it possible to deactivate the individual design checks in the design modules, such as STEEL EC3 or ALUMINUM?
Question
When performing an analysis with STEEL Warping Torsion, I obtain tension forces instead of compression forces in a column. Where is the problem?
Question
I would like to consider hole weakenings in the tension design on member ends. Where can I define the net area for the tension design?
Question
How can I activate and deactivate the transparent display of values on surfaces for graphics in the printout report?
Question
Can I retrace and control the critical buckling value calculated by the internal eigenvalue solver?
Question
The calculation in STEEL EC3 according to General Method or after the warping torsion analysis is unsuccessful. Unfortunately, I cannot graphically control the mode shape. Why?
Question
Is it worthwhile to calculate continuous beams with the structural analysis software RFEM or RSTAB?
Question
Can I also design a structural component made of stainless steel in RF‑/STEEL EC3?
Question
Can I export a control perimeter from RF‑PUNCH Pro to an RFEM model?
Question
Can I also generate a wind load on roof overhangs using the load generator?
Question
In the calculation, the error message "Insufficient memory space" appears even though the computer has enough RAM. Why?
Question
Where can I display steel stresses for the design of a surface in RF‑CONCRETE?
Question
I have problems installing Dlubal Software programs. What could be the reason for this?
Question
How can I enter the torsional rigidity (cross-section deformation) in the rotational restraint? I cannot find it anywhere in the program.
Question
If I rotate my model in view, the model center is always the rotation center point. Can I also put the rotation center in the center point of the current view?
Question
When displaying the deformations of LC1, the maximum is 10 mm. If you look at the deformations of CO1 (defined as 1.0*LC1), there is a larger deformation as a result. How is this possible?
Question
I cannot find any option to display intermediate values for graphic display of a deformed model.
Question
Why do I get no stresses on the top or bottom side of a member loaded with temperature (heating on the top side) if the member has no elastic foundation? Or more specifically, why does the upward curved member (due to heating on the top side) have tension stress on the bottom side if the member has an elastic foundation? There must be compression stress on the bottom side.
Question
How do I model an elastic support of a rib on a wall when the downstand beam and the ceiling are mounted on the wall in reality? Is it necessary to provide the rib with an extra support of the elastic type?
Question
I have an oblique-angled structure. To create the reinforcement accordingly, I would like to enter a different angle than 90° between the directions. Why it is not possible to change this in Window 1.4 of RF‑CONCRETE Surfaces?
Question
I would like to superimpose two moving loads: Moving Load 1 stays at position 0.0 m and Moving Load 2 runs once over the entire beam. Then, Moving Load 1 stays at 0.2 m and Moving Load 2 runs over the girder again. Is this possible?
Dongle Problem
Although my dongle is connected to the PC, I get an error message when starting the program. What is the reason?
Question
In my model, I get error message No. 414 for a contact solid. It is not possible to perform a calculation.
Question
Is it possible to import 3D models created in RFEM into the Nemetschek Allplan CAD program as 3D solids (for example, via IFC)? If yes, how?
Question
Can I model a pulley with RFEM?
Question
Is it possible to import several IFC files directly into an existing model? Or do I have to open the files separately (as reference objects) first and then merge them in the model?
Question
Can I also consider loads, for example, from multilayer floor structures in RFEM or RSTAB?
Question
In SHAPE‑THIN, I have activated the calculation of the effective cross-section in General Data. However, the calculation cannot be performed. Error 2305 appears. What should I do?
Question
In CRANEWAY, I would like to apply the forces that actually act simultaneously from the crane runway on both columns. Can I read them out somewhere?
Question
How do I obtain radial mesh refinement for angular base geometry?
Question
My printout report is not printed. All other file formats, such as PDF, DOC, and so on, can be printed on my printer. When printing the printout report (old and new files), no message appears in the printer folder. Also, there is no error message. Exporting to PDF works fine, but printing as PDF does not work either. Can you help me?
Question
How can I prevent the FE mesh and all results from being deleted when importing a model?
Question
For a clear arrangement, I would like to display surface loads hatched in the top view (for example, a ceiling level). Is this possible?
Question
Is it possible to create a user-defined distributed moment in a similar manner as for forces?
Question
When I look at the results of deformation analyses in the SLS of the add-on modules in the RSTAB working window, a higher value results for both local and global deformation in the Z-direction than in the add-on modules.
Question
Are there any verification examples that can help me to understand the results of RFEM, RSTAB, and the add-on modules?
Question
Can I check the input of nodal supports for a set of members in the RF‑/STEEL EC3 add‑on module? I am not sure if my entries are correct.
Question
During the calculation, I get a warning that the calculation of a load case does not converge. What should I do?
Question
How can I determine the effective cross-section properties according to EC 3 or EC 9 with SHAPE‑THIN?
Question
I have assigned a line load to a member. A message appears saying that the line is loaded, but does not belong to a surface.
Question
I adjusted the screen view accidentally. How can I dock the table and the navigator again?
Question
I would like to import a cross-section as DXF in SHAPE‑THIN and convert it automatically into a cross-section. Where can I find this feature?
Question
Can my client, who does not have a program license, open and view the model file?
Question
How can I enter a head plate at a frame joint for the stability analysis of a frame beam in STEEL EC3?
Question
I am unable to import a cross-section from SHAPE‑THIN into RSTAB. Can you help me?
Question
I have two import files (concrete structures: ifc file, steel structures: dxf file). Can I merge both files in RFEM and handle them as an entire model?
Question
A crane runway has small cantilevered girders at the start and end, so that the wheels go as far as the column. In these areas, the deformations show invalid values. What should I do?
- 002489
- JOINTS Timber | Timber to Timber 8
- JOINTS Timber | Steel to Timber 8
-
- JOINTS Steel | Rigid 8
- JOINTS Steel | DSTV 8
- JOINTS Steel | Pinned 8
- JOINTS Steel | Tower 8
- JOINTS Steel | SIKLA 8
- JOINTS Steel | Column Base 8
- RF-JOINTS Timber | Timber to Timber 5
- RF-JOINTS Timber | Steel to Timber 5
- RF-JOINTS Steel | Rigid 5
- RF-JOINTS Steel | DSTV 5
- RF-JOINTS Steel | Pinned 5
- RF-JOINTS Steel | Tower 5
- RF-JOINTS Steel | SIKLA 5
- RF-JOINTS Steel | Column Base 5
- Concrete Structures
- Structural Analysis & Design
- Eurocode 2