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  • Answer

    No, this is unfortunately not possible.

    If you save the last position of your model in RFEM or RSTAB, it is done in the currently used version.

    However, you can also open the RFEM 5 files in RFEM 4 and the RSTAB 8 files in RSTAB 7. In this case, please pay attention to the notes in FAQ 004112 under the link below.
  • Answer

    For this, use the "Open" command of the "File" menu in RSTAB 7.

    In the "Open" dialog box, the RSTAB 8 files are not visible immediately as the files for the program versions RSTAB 7 (and previous) are only displayed.

    In order to be able to see all files (including the RSTAB 8 files) in a specific directory or folder, you have to change the file type to "All Files" in the lower part of the dialog box. Then, you will also see the newer files for RSTAB 8 and can open them in RSTAB 7.

    Important: We do not guarantee compatibility when opening an RSTAB 8 file in RSTAB 7. Thus, the file or the model contained might be damaged. The module data and the results will also be deleted.

    The same procedure is also possible in RFEM 4.

  • Answer

    Yes, that is possible in principle. However, there are some things that have to be taken into account.

    • It may be useful to keep RSTAB as a license so that you can easily edit the old projects in the future.
    • RFEM can open the RSTAB models. The structural and load data are transferred apart from a few exceptional situations. For add-on modules, it may be necessary to rework or enter the data due to the different data formats (in comparison to RSTAB, RFEM additionally requires surface and solid elements).
    • It is also necessary to convert possible active service contracts.
    • As there are various product families, there is no standard price for the upgrade. We can provide you with a price information after having evaluated the relevant case. For this, simply contact our sales department.
  • Answer

    In RFEM, it is possible to open and further edit structures with loads and load cases, which has been modeled in RSTAB. This may be necessary, for example, if it is determined during the model input that it makes sense to include surface elements such as wall panes in the existing RSTAB model.

    In order to open an RSTAB file in RFEM, you have to change the file type in the "Open" dialog box either to "File type RSTAB" or to "All Files." In this way, you can display not only the RFEM files, but also all RSTAB files stored in the selected directory. After opening the RSTAB file, you can save the model as an RFEM file for further editing.

    However, it should be noted that the printout reports or input data already created in add-on modules cannot be transferred.

    An RFEM file can be imported in RSTAB by renaming the file extension *.rf5 to *.rs8. Also in this case, all module entries and printout reports are deleted. You should also note that beam structures are only transferred in RSTAB; surface elements are deleted. 

  • Answer

    RSTAB is a 3D structural frame analysis program where the design of 2D and 3D frameworks is possible. The efficient RSTAB solver allows for linear and nonlinear calculations of internal forces, deformations, and support reactions.

    With RFEM, you extend the member design by plates, shells and solids according to the Finite Element Method. These elements can be combined arbitrarily in a structure. RFEM contains almost all functions from RSTAB; that is why also pure frameworks can be designed with it.

    The user interface and the handling of RSTAB and RFEM are almost identical, but RFEM offers more functions due to the greater scope of the program. The import of structure and load date from RSTAB to RFEM and vice versa is possible as long as the objects are supported by both programs.

    Various add-on modules are available for structural design in RSTAB and RFEM considering both material and standard-specific requirements. Thanks to the modular software concept, it is possible to put together a program package which is adapted to the individual needs. It is possible to upgrade the program at any time.
  • Answer

    The export is not possible in this direction.

    In RFEM, surface elements may be available in addition to member elements. RSTAB is not able to import these surface elments because this would lead to a falsification of the structural system and so to wrong results.

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First Steps

First steps

We provide hints and tips to help you get started with the main programs RFEM and RSTAB.

Wind Simulation & Wind Load Generation

With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.

The generated wind loads acting on these objects can be imported to RFEM or RSTAB.

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