- Applicable for members defined as sets of members
- Separate solver that considers 7 deformation directions (ux, uy, uz, φx, φy, φz, ω) or 8 internal forces (N, Vu, Vv, Mt,pri, Mt,sec, Mu, Mv, Mω)
- Nonlinear design according to second-order analysis
- Input of imperfections
- Calculation of critical load factors and buckling mode shapes as well as the visualization of them (incl. warping)
- Integration into member design in the RF-/STEEL AISC and RF‑/STEEL EC3 add‑on modules
- Available for all thin‑walled steel cross‑sections
RF-/STEEL Warping Torsion | Features





Using the direct interface of RFEM 6 / RSTAB 9 with BricsCAD, you can import and export nodes and lines.
Furthermore, you can export different objects (for example, cross-sections) from RFEM 6 / RSTAB 9 to separate layers in BricksCAD.
Further features include the export of a deformed FE mesh and dimension lines.

The DSTV product interface for steel structures is available in RFEM 6 / RSTAB 9 for transferring pure member structures (including loads, load cases, load combinations, imperfections).
The DSTV interface allows you to exchange data between RFEM 6 / RSTAB 9 and the programs like "Bentley ProStructure 3D", "Tekla Structures", "Bocad", "Intergraph Frameworks", "Graitec Advance Steel", "Cadwork", and many others.

Using the SDNF interface, you can import and export data such as materials, cross-sections, members, and surfaces in RFEM 6 and RSTAB 9. It allows you to exchange the file-based data with programs such as Tekla Structures or Advance Steel.

The DXF II interface is based on a different technology than the DXF interface. It provides additional features, such as the export of deformed meshes, the export of dimension lines, and so on.
Is Revit Add-in installed automatically in RFEM 6?
How can I define RSECTION cross-sections in Grasshopper?
Which interfaces are available for the data exchange between RFEM 6 and HiCAD?