We provide hints and tips to help you get started with the RFEM program.
Dlubal RFEM 5 & RSTAB 8 - Add-on Modules: RF-/STEEL AISC
First Steps with RFEM
The add-on module performs the ultimate and the serviceability limit state designs of members and sets of members according to the American standards ANSI/AISC 360-05 and 360-10.
After all the detail settings for the designs are set, you have to define all necessary input data for the calculation in clearly arranged tables, such as material and cross-sections, intermediate lateral restraints, effective lengths for stability design for members and sets of members, individual support conditions and eccentricities.
Define your allowable deflections.
With the STEEL AISC add-on module, it is easily possible to optimize your cross-sections automatically. Minimize material costs and deliver economically optimized solutions.
The result windows list all detailed results sorted by specific subject in extendable tree menus.
It is possible to graphically display all result diagrams on members and sets of members in the main program.
Last but not least, it is possible to view the analysis progress in the global printout report of RSTAB or RFEM from the determination of internal forces up to the design results.
ANSI AISC ANSI/AISC 360 LRFD ASD American standard Structural Analysis Structural Analysis Software Dynamic Analysis Design EC Eurocode BIM Building Information Modeling CAD FEA FEM Finite Elements Simulation Analysis Structural Engineering (Industry) Construction (Industry) Tutorial RFEM Tutorial design of steel structure 3D dyamic static Finite Elements analysis Steel Frame building NASCC
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Frequently Asked Questions (FAQ)
- 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?
- Does RF-STEEL AISC perform torsion design per Design Guide No. 9?
- 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 to be unrealistic. What is the reason?
- For which programs is the STEEL Warping Torsion add-on module available?
- 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?
- I design a cross-section created in the SHAPE‑THIN program by using the RF‑STEEL EC3 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?
- Is it possible to design intermittent welds in the CRANEWAY add-on module?
- For a buckling analysis, FE‑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?
- Why do I get a design ratio for the stability analysis according to 220.127.116.11 in the STEEL EC3 add-on module? Why is a * added to Equation (6.36)?
- I design a frame with a taper (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.