Structural Frame & Truss Analysis Software RSTAB 9 | Interfaces

RSTAB - Structural Engineering Analysis & Design Software

The 3D structural frame analysis program RSTAB is the ideal tool for the design of beam, frame, or truss structures consisting of steel, reinforced concrete, timber, aluminium, or other materials.

With RSTAB, you can easily and quickly define a structural model and then calculate the internal forces, deformations, and support reactions. Various add-ons that take into account the material and standard-specific requirements are available for the design.

  • RSTAB 9 for Frames and Trusses

BIM-Orientated Planning

Structural Analysis Models to Download

Models to Download

Select numerous structural models to utilize them for training purposes or for your projects.

Really Great Software

"I take this opportunity to thank you and your team for a really great software. After so many years of utilizing your software, we still see every day what your product is able to do and we really enjoy the application!

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RSTAB 9 has various interfaces with other software by default. This allows you to exchange model data easily with CAD programs, for example.


Web Service and API

The new API technology Web Services allows you to create your own desktop or web-based applications by controlling all objects included in RFEM 6 / RSTAB 9. By providing libraries and functions, you can develop your own design checks and effective modeling of parametric structures, as well as optimization and automation processes using the programming languages Python and C#.


Integration in Autodesk Revit

The direct bidirectional interface in RFEM 6 / RSTAB 8 to Autodesk Revit leaves nothing to be desired: A structure created in RFEM/RSTAB can be visualized in Revit and prepared for the design engineer; in the same way, it is possible to calculate and design a Revit model in RFEM/RSTAB. Even subsequent modifications in both the Revit and the RFEM/RSTAB model can be easily aligned.


SAF Interface

RFEM 6 and RSTAB 9 support the data exchange using the Structural Analysis Format (SAF). The structural analysis programs offer both import and export. SAF is a file format based on MS Excel, intended to facilitate the exchange of structural analysis models between different software applications.


Autodesk-AutoCAD Interface

Structures in the DXF format can be imported into RFEM 6 / RSTAB 9 as lines from Autodesk AutoCAD.

Different objects (for example, cross-sections) can be exported from RFEM 6 / RSTAB 9 to separate layers in Autodesk AutoCAD.


Microsoft Excel

For further processing or preparation of table values, RFEM 6 / RSTAB 9 provides a direct connection to Microsoft Excel. Thus, you can export the tables of RFEM 6 / RSTAB 9 individually or all at once, directly into an Excel spreadsheet. Furthermore, the Excel tables can be transferred to RFEM 6 / RSTAB 9.


DXF Format (*.dxf)

The DXF file format is one of the most common data exchange formats available in the CAD area. DXF files can be imported as well as exported.


IFC Interface in RFEM 6 / RSTAB 9

The IFC interface (Industry Foundation Classes) is divided into several areas, called Views. Also, there are various versions of the IFC format. Version 4.0 is supported for both import and export. The older version, 2x3, is only supported for import. Regardless of the exchange direction, it is possible to process the StructuralAnalysisView as well as the ReferenceView (Coordination View).

When importing the ReferenceView, the individual IFC objects can be converted into RFEM-native elements. The cross-section and material descriptions can be adjusted using the conversion tables. The export in the ReferenceView allows you to display the structure in IFC viewers and CAD programs. StructuralAnalysisView allows you to transfer the structural model including loading.


Background Layers

Background layers are used to simplify the modeling process and can be underlain in the work window of RFEM 6 / RSTAB 9 to facilitate the input of graphical objects. The layers are generated from an imported DXF file.



  • Fast modeling thanks to sophisticated input technology
  • One program for all types of structures, from single-span girders to complex 3D beam structures
  • Fast calculation using the multiprocessor technology
  • Support of national and international standards
  • Quick generation of a professional-looking printout report
  • Automatic generation of wind loads using the integrated CFD wind simulation (RWIND required)
  • API via web service
  • Globally recognized program with over 100,000 users
  • Professional customer support provided by more than 20 support engineers


2,850.00 EUR

The prices apply to the use of the software in all countries.