From the very upsetting experiences of few earthquakes, like Bhuj earthquake (2001) in India R.C.C elevated water tanks were heavily damaged or collapsed. This was might be due to the lack of knowledge regarding the behaviour of supporting system of the tank and also due to improper geometrical selection of staging. The main aim of this study is to carry out the seismic analysis of RCC square elevated tank using SAP2000. Using response spectrum analysis, compare the result of base reaction, joint displacement with different staging system. The table reveals displacement values of top node and bottom node of container of tank, though it is evident that alternate cross bracing pattern gives the minimum value of displacement, but from the construction point of view and economy of overall construction, the alternate diagonal bracing pattern can be suggested.

Keywords : elevated water tank, displacement, seismic analysis, brasing pattern