In the program generation RFEM 5 and RSTAB 8, the created mass cases can be combined using mass combinations. This takes into account combination coefficients which are preset according to EN 1990 and EN 1998‑1, but can also be adjusted manually.
It is possible to import mass combinations into the natural vibration cases and the direct solvers of the time history analysis.
In the program generations RFEM 6 and RSTAB 9, the masses are automatically combined according to the standard. Zusatzmassen können als normale Lasten in den Lastfällen und -kombinationen ergänzt werden. Massenkombinationen sind nicht mehr erforderlich.