In addition to our technical support (e.g. via chat), you’ll find resources on our website that may help you with your design using Dlubal Software.
Frequently Asked Questions (FAQ)
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Whether or not you see the selection in the Results navigator depends on the settings for the serviceability limit state design.In the settings for the serviceability limit state design, you can find the option 'Increase Required Longitudinal Reinforcement Automatically for Serviceability Limit State Design'.Only if the automatic increase of the longitudinal reinforcement has been activated is the 'Limit States' entry available in the Results navigator.
AnswerBoth RFEM and RSTAB are available as solutions. In addition to Eurocode 2, international standards such as ACI 318, CSA A23.3, SIA 262 or GB 50010 are also available for the designing in both programs.
With additional modules for columns, foundations, or punching shear designs, it is possible to calculate the components quickly and reliably.
Main Programs RFEM or RSTABThe main programs RFEM or RSTAB are used to define structures, materials, and Actions.
RFEM is clearly the first choice for solid structures, since in addition to the possibility of creating spatial frame structures, structural systems consisting of plates, walls and shells can be created as well. RFEM is the more diverse variant, as it can be equipped and extended with appropriate additional modules for all materials and designs.
- Eurocode 2 (EN 1992-1-1)
- SIA 262
- ACI 318
- CSA A23.3
- GB 50010
- RF-/CONCRETE Columns
Reinforced concrete design according to the model column method or nominal curvature method
- RF-PUNCH Pro
Punching Shear Designs of Surfaces
- RF-/FOUNDATION Pro
Design of Single, Bucket and Block Foundations
- RF-CONCRETE Deflect (RFEM)
Analytical deformation analysis
- RF-CONCRETE NL
Realistic deformation analysis of surfaces and members
Dynamic AnalysisIf earthquake calculations or vibration analysis of the building are necessary, the RF-/DYNAM Pro Add-on Modules provide suitable tools for determining natural frequencies and shapes, forced vibration analysis, generation of equivalent loads or also for nonlinear time history analysis.If you have any further questions on the Dlubal programs, please do not hesitate to contact the sales department.
Yes, it is possible.You can do this by selecting the checkbox next to 'Use Required Reinforcement for Design of Serviceability' in the input dialog box '1.4 Reinforcement', 'Longitudinal Reinforcement' tab.Thus, the module places the entire reinforcement required for the ultimate limit state design and/or serviceability limit state design in the reinforcement layout.The results output 'Additional Reinforcement' is omitted after designing in the results windows in the add-on module as well as in the printout report.The option "Use Required Reinforcement for Design of Serviceability" can be combined with the option 'Increase Required Longitudinal Reinforcement Automatically for Serviceability Limit State Design'.
Torsion at cross-section class 4 is not regulated in Eurocode 3, which is why this warning appears.
You can change the cross-section, classify the cross-section in Window 1.3 manually to Cross-Section Class 3, or neglect the torsion in the "Details" dialog box, "Ultimate Limit State" tab at your discretion and on your own responsibility.
AnswerFor general cross-sections, also including SHAPE-THIN cross-sections, the elastic design can only be performed in RF-/STEEL EC3: Plastic interactions are only applicable to a few cross-section shapes.
According to EN 1993-1-1, it is only possible to increase the material factor based on the applied stresses if stability analyses are not performed with the equivalent member design. Since equivalent member designs are activated in the next tab "Stability" by default, this check box is grayed out.
After deactivating the equivalent member design, this checkbox is enabled and activated by default.
This depends on the selected settings in the navigator: for the ultimate limit state and the serviceability limit state design, it is possible to select the "limit state" in the Results navigator, whose required reinforcement is to be displayed.
The following settings are possible (see the figure):
- ULS / SLS governing (the envelope of "ULS/SLS")
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Wind Simulation & Wind Load Generation
With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.
The generated wind loads acting on these objects can be imported to RFEM or RSTAB.
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