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Earthquakes plays an important part in the analysis and designing of structure. It takes long time to analyses and design structure manually under different loading conditions but with the help of software the analysis and construction of any structure can be done easily so with the help of STAAD PRO software we Compare the performance of Water tank with chevron and without chevron water tank to analyze the stability of structure in seismic zone. Water tank with large height is more vulnerable to collapse due to high wind and earthquake load. The risk of failure in such a water tank can be minimized by adopting lateral load resisting systems. In this study, modeling is done on water tank with chevron and without chevron. The structure height of Circular tank is 21 m and capacity of tank is 400 m3 then the calculated height of tank is 5 m, height of top dome is 2 m and the hydraulic pressure is 25 kn.m . In this project we Compare the performance of Water tank with chevron and without chevron water tank. Comparison has been done for different types of bracing for earthquake load case by considering various parameters like story shear, displacement, shear force, bending moment, Frequency and Time period. STADD PRO stands for structural analysis and design software. M25 grade of concrete and Fe-415 steel as per IS 800:2007 were used. Load combinations are taken as per IS 1893(PART II):2002 code and method of analysis used is Linear response method and live load are taken according to IS-875. Earthquake zone 4 has been adopted for analysis.