I have conducted an incremental dynamic analysis using sap2000 and the output of my result is in term of the peak ground acceleration (PGA). So I would like to know how can I convert the output to the Spectral acceleration parameter.
The Seismsignal is a user-friendly software for processing earthquake data. The spectral acceleration in desired fundamental period of vibration could be determined by this software easily. Spectral acceleration is a more robust intensity in IDA analysis because it leads to lower dispersion instead the PGA intensity.
Warm regards,
Pouya Amirchoupani (Research advisor at Babol Noshirvani university of technology).