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Showing results for tags 'modal participation factor'.
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I have analyzed the frame for the load cases pushover, Gravity and Modal.I want to find out the Sa(Spectral acceleration) and sd (spectral Displacement) to convert the available pushover curve into capacity spectrum for finding out the performance point using ATC-40, procedure A.Can anybody please, Help me To get Participation Factor PF and modal mass ratio alpha directly from SAP2000 output Tables?(Can Participation factor be negative because in output table showing is correct?) (the frame is 2D, 4 storey, 4 Bays.)Thank You