Generally, Dlubal Software and Autodesk Revit use different material and cross-section descriptions. To exchange data smoothly, a unique assignment must be guaranteed.
When importing or exporting, it is first checked whether the same-named materials or cross-sections are available in the respective application. If so, they will be used. If this is not the case, the conversion files (“Mapping Files”) are scanned for an assignment. The defined rules are then applied.
In RFEM/RSTAB, the locations of the conversion files are registered in the Import or Export dialog box, Detail Settings tab. Those are editable ASCII files in the format *.txt.
Use the button 
to customize and adapt those files to RFEM/RSTAB and Revit.
If user-defined parameters for materials and cross-sections are defined in Revit, they are used preferentially; the specifications of the conversion file are not used.
If the material comparison ("Mapping") is not successful, RFEM/RSTAB can import the material names and the main characteristics from Revit. Due to the relation between E, G, and ν in RFEM/RSTAB, the following rules are applied: For ν ≠ 0 in Revit, E and ν are imported. G is then calculated from the two parameters. For ν = 0 in Revit, E and G are imported.
The specific weight is calculated with the gravity acceleration of g = 10 m/s2. The partial safety factor is always given as 1.0.
If the comparison of the cross-sections (“Mapping”) has not been successful, a list with the problematic sections appears. It makes it possible to assign cross-sections during the export.
Via “Dlubal Parameters”, the Revit objects can be supplied with additional information which RFEM/RSTAB then interprets accordingly.
Currently, the definition of the following Dlubal parameters is possible:
- Dlubal stiffness type “Membrane without tension” for a masonry calculation on walls in Revit
- Surface supports for RFEM surfaces also for floor ceilings in Revit
- Material and cross-section descriptions (“Mapping”) directly at the material or cross-section in Revit
- Member types “Truss” and “Tension”
It is possible to carry out a user-defined renaming of the parameter descriptions depending on the language. The [Start] button either adds or removes the Dlubal parameters from the Revit project.