Compared to the RF-/DYNAM Pro - Equivalent Loads add-on module (RFEM 5 and RSTAB 8), the following new features have been added to the Response Spectrum Analysis add-on for RFEM 6 and RSTAB 9:
- Response spectra from numerous standards (EN 1998, DIN 4149, IBC 2018, etc.)
- User-defined response spectra or those generated from accelerograms
- Approach of direction-related response spectra
- Results are stored centrally in a load case with underlying levels to ensure clarity
- Accidental torsional actions can be taken into account automatically
- Automatic combinations of seismic loads with the other load cases for use in an accidental design situation
More About Response Spectrum Analysis:
https://www.dlubal.com/en-US/products/add-ons-for-rfem-6-and-rstab-9/dynamic-analyses/response-spectrum-analysis
Download the free trial versions and get to know the new RFEM 6 and RSTAB 9 with their add-ons: