The Aluminum Design add-on provides you with further options. Here you can also design general cross-sections that are not predefined in the cross-section library. For example, create a cross-section in the RSECTION program and then import it into RFEM/RSTAB. Depending on the design standard used, you can select from various design formats. This includes, for example, the equivalent stress analysis.
With a license for RSECTION and Effective Sections, you can also perform the design checks while taking into account the effective cross-section properties according to EN 1993‑1‑5.
The Steel Design add-on helps you, among other things, to design general cross-sections that are not predefined in the cross-section library. To do this, create a cross-section in the RSECTION program and then import it into RFEM/RSTAB. Depending on the design standard that you have used, you can select from various design formats. One of them is, for example, the equivalent stress analysis. Do you have a license for RSECTION and Effective Cross-Sections? Then you can also perform the design checks that take into account the effective cross-section properties according to EN 1993‑1‑5.
The Dlubal Center ensures that your planning goes quickly and efficiently. Among other things, your projects and model files are managed here in a central location. Detailed information and graphics make it easier for you to assign all models and thus enable uncomplicated, clear processing of the project. Furthermore, your customer data including the licensed programs and add-ons is organized in the Dlubal Center.
Dlubal Software supports its customers with their construction planning worldwide. The modern online licensing system allows licenses of RFEM, RSTAB, and other programs to be distributed all over the world and assigned to the respective users via the Dlubal Account.
Don't have an RFEM or RSTAB license yet? No problem. Just download the 90-day trial version. This will allow you to test the full version of the program without any limitations.
Take a look at the "My Account" category. This is where your customer data, such as address, licensed programs, and add-ons are managed. It also takes you straight to the Dlubal website. Find out about the latest news there, use online services such as "Snow Load Zones, Wind Zones and Earthquake Zones", or get helpful information from the FAQ database.
Design of tension, compression, bending, shear, torsion, and combined internal forces
Tension design with consideration of a reduced section area (for example, hole weakening)
Automatic classification of cross-sections to check local buckling
Internal forces from the calculation with Torsional Warping (7 DOF) are taken into account by means of the equivalent stress check (currently not for the design standards AISC 360‑16 and GB 50017).
Design of cross-sections of Class 4 with effective cross-section properties according to EN 1993‑1‑3 (licenses for RSECTION and Effective Sections are required for the RSECTION cross-sections)
Shear buckling check according to EN 1993‑1‑5 with consideration of transverse stiffeners
Design of stainless steel components according to EN 1993‑1‑4
Design of tension, compression, bending, shear, torsion, and combined internal forces
Tension design with consideration of a reduced section area (for example, hole weakening)
Automatic classification of cross-sections to check local buckling
Internal forces from the calculation with Torsional Warping (7 DOF) are taken into account by means of the equivalent stress check (currently not yet for the design standard ADM 2020).
Design of cross-sections of Class 4 with effective cross-section properties according to EN 1993‑1‑5 (licenses for RSECTION and Effective Sections are required for the RSECTION cross-sections)
Shear buckling check with consideration of transverse stiffeners
Available for cold-formed L, Z, C, channel, top-hat, and CL sections from the cross-section database, as well as for general cold-formed (non-perforated) SHAPE-THIN-9 sections
Determination of the effective cross-section considering the local buckling and the distortional buckling
Cross-section ultimate limit state, stability, and serviceability limit state designs according to EN 1993‑1‑3
Design of local transverse forces for webs without stiffening
Available for all National Annexes included in RF-/STEEL EC3
Module extension RF-/STEEL Warping Torsion (license required) for stability analysis according to second-order analysis as stress analysis including consideration of the 7th degree of freedom (warping)
Import of materials, cross-sections, and internal forces from RFEM/RSTAB
Steel design of thin‑walled cross‑sections according to EN 1993‑1‑1:2005 and EN 1993‑1‑5:2006
Automatic classification of cross-sections according to EN 1993-1-1:2005 + AC:2009, Cl. 5.5.2, and EN 1993-1-5:2006, Cl. 4.4 (cross-section class 4), with optional determination of effective widths according to Annex E for stresses under fy
Integration of parameters for the following National Annexes:
DIN EN 1993-1-1/NA:2015-08 (Germany)
ÖNORM B 1993-1-1:2007-02 (Austria)
NBN EN 1993-1-1/ANB:2010-12 (Belgium)
BDS EN 1993-1-1/NA:2008 (Bulgaria)
DS/EN 1993-1-1 DK NA:2015 (Denmark)
SFS EN 1993-1-1/NA:2005 (Finland)
NF EN 1993-1-1/NA:2007-05 (France)
ELOT EN 1993-1-1 (Greece)
UNI EN 1993-1-1/NA:2008 (Italy)
LST EN 1993-1-1/NA:2009-04 (Lithuania)
UNI EN 1993-1-1/NA:2011-02 (Italy)
MS EN 1993-1-1/NA:2010 (Malaysia)
NEN EN 1993-1-1/NA:2011-12 (Netherlands)
NS EN 1993-1-1/NA:2008-02 (Norway)
PN EN 1993-1-1/NA:2006-06 (Poland)
NP EN 1993-1-1/NA:2010-03 (Portugal)
SR EN 1993-1-1/NB:2008-04 (Romania)
SS EN 1993-1-1/NA:2011-04 (Sweden)
SS EN 1993-1-1/NA:2010 (Singapore)
STN EN 1993-1-1/NA:2007-12 (Slovakia)
SIST EN 1993-1-1/A101:2006-03 (Slovenia)
UNE EN 1993-1-1/NA:2013-02 (Spain)
CSN EN 1993-1-1/NA:2007-05 (Czech Republic)
BS EN 1993-1-1/NA:2008-12 (the United Kingdom)
CYS EN 1993-1-1/NA:2009-03 (Cyprus)
In addition to the National Annexes (NA) listed above, you can also define a specific NA, applying user‑defined limit values and parameters.
Automatic calculation of all required factors for the design value of flexural buckling resistance Nb,Rd
Automatic determination of the ideal elastic critical moment Mcr for each member or set of members on every x-location according to the Eigenvalue Method or by comparing moment diagrams. You only have to define the lateral intermediate supports.
Design of tapered members, unsymmetric sections or sets of members according to the General Method as described in EN 1993-1-1, Cl. 6.3.4
In the case of the General Method according to Cl. 6.3.4, optional application of "European lateral-torsional buckling curve" according to Naumes, Strohmann, Ungermann, Sedlacek (Stahlbau 77 [2008], pp. 748‑761)
Rotational restraints can be taken into account (trapezoidal sheeting and purlins)
Optional consideration of shear panels (for example, trapezoidal sheeting and bracing)
RF-/STEEL Warping Torsion module extension (license required) for stability analysis according to the second-order analysis as stress analysis including consideration of the 7th degree of freedom (warping)
Module extension RF-/STEEL Plasticity (license required) for plastic analysis of cross‑sections according to Partial Internal Forces Method (PIFM) and Simplex Method for general cross‑sections (in connection with the RF‑/STEEL Warping Torsion module extension, it is possible to perform the plastic design according to the second‑order analysis)
Module extension RF-/STEEL Cold-Formed Sections (license required) for ultimate and serviceability limit state designs for cold-formed steel members according to the EN 1993-1-3 and EN 1993-1-5 standards
ULS design: Selection of fundamental or accidental design situations for each load case, load combination, or result combination
SLS design: Selection of characteristic, frequent, or quasi-permanent design situations for each load case, load combination, or result combination
Tension analysis with definable net cross-section areas for member start and end
Weld designs of welded cross-sections
Optional calculation of warp spring for nodal support on sets of members
Graphic of design ratios on cross-section and in RFEM/RSTAB model
Determination of governing internal forces
Filter options for graphical results in RFEM/RSTAB
Representation of design ratios and cross‑section classes in the rendered view
Color scales in result windows
Automatic cross-section optimization
Transfer of optimized cross-sections to RFEM/RSTAB
Parts lists and quantity surveying
Direct data export to MS Excel
Verifiable printout report
Possibility to include the temperature curve in the report
To test the program before purchasing an RFEM or RSTAB license, you can download the free 90-day trial version. This will allow you to test the full version of the program without any limitations.
When determining internal forces, you can choose between calculation method 1 (uncracked over entire beam length) and calculation method 2 (crack formation over internal columns).
In both cases, it is possible to consider a constant effective width of the concrete slab over the entire span according to ENV 1994-1-1, 4.2.2.1 (1) and a redistribution of the moments. Internal forces for the design of shear connectors can only be determined by the elastic calculation of internal forces using the RSTAB analysis core (no RSTAB license is required).
The calculation performs fully automatic determination of the effective cross-section properties at the respective points of time, considering creep and shrinkage. In the RSTAB user interface, the structural models are created as a member structure, including all boundary conditions and loading. This way, reliable calculation of the internal forces with the effective cross-section properties is ensured.
Results are displayed in result tables sorted by required designs. Clear arrangement of the results allows for easy orientation and evaluation.
Ultimate Limit State Design:
Bending and shear force resistance with interaction
Partial shear connecting of ductile and non-ductile connecting elements
Determination of required shear connectors and their distribution
Design of longitudinal shear force resistance
Design of connection with shear connectors and of connector perimeter
Results of governing support reactions for construction and composite stage, including loads of construction supports
Lateral-torsional buckling analysis (for continuous beams and cantilevered girders)
Check of cross-section classes as well as of plastic and elastic cross-section properties
Serviceability limit state design:
Deflection Analysis
Deformations and initial pre-cambering determined with ideal cross-section properties from creep and shrinkage
Analysis of natural frequencies
Crack width analysis
Determination of support forces
All data are documented in a clearly arranged printout report, including graphics. In case of any modification, the printout report is updated automatically. COMPOSITE-BEAM is a stand-alone program and does not require the RSTAB license.
Using RF‑COM/RS‑COM, it is possible to create RFEM/RSTAB models and write data. The same applies to load cases, load combinations, and result combinations.
RF-COM/RS‑COM consists of an instruction set that can be embedded in common programming languages, such as Visual Basic, Visual Basic for Applications (VBA), Visual C++ (also .NET). The instruction set includes objects and methods that allow access to the RFEM/RSTAB data.
To be able to use RF-COM/RS‑COM, you only need an editor, a compiler, and basic programming knowledge. The supplied object library is easy to integrate into the editor. For example, in the case of Microsoft Excel, you have everything you need as a VBA editor included in this software.
The RF-COM/RS‑COM interface requires valid licenses for RF‑COM/RS‑COM, as well as for RFEM/RSTAB and the respective add‑on modules whose data is to be used.