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How can I export my member structure from RSTAB / RFEM so that I can continue to use it in my design program? When exporting to * .dxf format, I only get the centroidal lines.


First, check if a specific interface is not available for the design program. When designing with Revit or Tekla, the user has direct interfaces available. It is also possible to export to the DSTV format. This is also supported by many programs.

Of course, the export to the * .dxf format is possible at any time. However, since member structures are basically pure weight line models to which the information about cross-section and material is only attached, you can only export the lines.
However, if you need the member as a 3D object, you can use the export into the Bentley ISM format. Please note that the free Bentley Structural Synchronizer is required. You can find a link to this product at the end of this article. The export can be easily started by clicking "File" - "Export."

The Structural Synchronizer converts the members into solid models. Then, a file with the extension * .ism.dgn is written. This format is supported by many design programs.


Bentley DGN ISM Export Member structure


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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