04-19-2009, 04:44 PM
Yasir, define your load as "quake" and input the UBC97 code as your preference for ETABS to determine the seismic loads. Check the seismic load output of ETABS against what you are expecting. You can also put in your manually calculated floor shears based on UBC97 unto your rigid floor diaphragms.
regards,
juice
regards,
juice