Evaluation of Modal Pushover Analysis: SAC Buildings Excluding Gravity Loads

Introduction Recently, a modal pushover analysis (MPA) procedure has been developed that includes the contributions of several modes of vibration (Chopra and Goel, 2001). This paper demonstrates the accuracy of the modal pushover analysis (MPA) procedure in estimating the seismic demands for SAC buildings without considering gravity loads or P-delta effects, and compares these results with those obtained for the same buildings by pushover analysis using three force distributions in FEMA-273.