Currently, accidental torsion analysis is only supported when using the Standard response spectrum excluding Eurocode, which needs to be specified. The functionality is not available for Custom spectra, which is a critical limitation that needs to...

Application of seismic action (including accidental torsion) for structure in Singapore using EN 1998-1 is cumbersome. Request to include this code in future development.

The accidental eccentricity in staad pro. as per Eurocode 1998:2004, while analyzing the structure for seismic loads using response spectra method.