In present days, structures exceeding 45m in length are designed with one or more expansion joint, where the building are split into two or more and behaves independent. In this study as per the code IS 456-2000 or IS 3414(1968), the building is modelled with expansion joint over a podium in ETABS. Now, while entering the time period for static earthquake forces, in the multiblock tall buildings over podium, structural engineers face challenge to select the building from which the time period has to be selected. Structural engineers had different perspectives on choosing the appropriate time period. But, usual practice was to take the entire buildings plan ignoring the expansion joint. This study discusses how to determine an appropriate time period considering the expansion joint, which time period is to be used in analysing the multi-block tall buildings with an expansion joint over a podium. The time period obtained from the larger size plan should be considered for earthq