Tips & Tricks

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RFEM and RSTAB provide the option to ‘Enable CAD/BIM model’ in the Model - General Data dialog box, tab ‘Options’. In addition to creating a model as usual, this CAD/BIM model allows you to import, organize and transform IFC, STEP, and IGES files.

After selecting this option, a new subnavigator ‘CAD/BIM model’ appears in the Project Navigator (see the lower screen). This navigator includes two import functions:

  1. Certified import ‘IFC2x3 ISO/PAS 16739’ of IFC files according to the ‘Coordination View 2.0’ example.
  2. Import of STEP files (Standard for the Exchange of Product Model Data) and IGES files (Initial Graphics Exchange Specification).

First, the import in this intermediate environment transfers the import data in a plane to only display the objects without generating data for the analytical model. In this plane, you can additionally create members, surfaces, or solids for the analytical model by right-clicking the respective object.

This intermediate level allows for a controlled import of objects in the analytical model. In this way, you can create the analytical model using BIM data without unnecessary elements in RFEM and RSTAB.


CAD BIM IFC STEP IGES Inventor Solidworks Data Exchange


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RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
3,540.00 USD
RSTAB Main Program
RSTAB 8.xx

Main Program

The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions

Price of First License
2,550.00 USD