Earthquakes have severely damaged the structures which are already built. Due to this there is large number of deaths, injuries and economic loss. Therefore there is an urgent need for seismic evaluation of structures. The concept of performance based seismic engineering using pushover analysis is a modern and popular tool to earthquake resistant design due to its simplicity and better seismic assessment of existing and new structures. It gives better understanding of the structural behavior during the strong earthquake ground motion. The present study gives an effect of increase in number of storey on seismic responses by performing pushover analysis. Reinforced concrete structures of G+4, G+5 and G+ 6 storey have been modeled and analyzed using CSi ETABS 9. 7. 4 software. Comparison of seismic responses of the structure in terms of base shear, time period and displacement has been done by performing nonlinear static pushover analysis. From analysis results it has been observed that base shear and spectral acceleration is reduced, whereas displacement, time period, spectral displacement is increased as the number of storey increases. Analysis also shows location of plastic hinges at performance point of the structures with different number of storey.

1. Applied Technology Council (ATC-40), "Seismic evaluation and retrofit of concrete buildings", Redwood City California Safety Commission, November 1996.
2. Federal Emergency Management Agency (FEMA 273), "NEHRP guidelines for the seismic rehabilitation of buildings", Washington DC, U. S. A. , October 1997.
3. Federal emergency management agency (FEMA 356), "Prestandard and commentary for the seismic rehabilitation of buildings", Washington, DC, U. S. A. , November 2000.
4. IS 456:2000, "Plain and Reinforced concrete – Code of practice", Bureau of Indian Standards, New Delhi.
5. IS 1893-2002(Part-1), "Criteria for Earthquake resistant design of structures", General provisions and buildings, Bureau of Indian Standards, New Delhi.
6. Praveen Rathod and Dr. S. S. Dyavanal, "Pushover analysis of seven storeyed RC building with openings in infill walls ", International journal of Engineering trends and technology, vol. 14, number 3, pp. 128-134, August 2014.
7. M. Mouzzoun, O. Moustachi, A. Taleb and S. Jalal, "Seismic performance assessment of Reinforced concrete buildings using pushover analysis", IOSR Journal of Mechanical and Civil Engineering, vol. 5, issue 1, pp. 44-49, January – February 2013.
8. Kavita Golghate, Vijay Baradiya and Amit Sharma, "Pushover Analysis of 4 Storey's Reinforced Concrete Building", International Journal of Latest Trends in Engineering and Technology, vol. 2, issue 3, pp 80-84, May 2013.
9. Dr. Suchita Hirde and Ms. Dhanshri Bhoite, "Effect of Modeling of Infill Walls on Performance of Multi- Story RC Building", International journal of Civil Engineering and Technology, vol. 4, issue 4, pp 243-250, July-August 2013.
10. Govind M, Kiran K. Shetty and K. Anil Hegde, "Nonlinear Static Pushover analysis of irregular space frame structure with and without T shaped column", International Journal of Research in Engineering and Technology, vol. 3, special issue: 03, pp 663-667, May-2014.
11. S. C. Pednekar, H. S. Chore and S. B. Patil, "Seismic assesment using pushover analysis: an overview", International journal of pure and applied research in engineering and technology, vol. 3, issue 9, pp 171-180, May 2015.
12. A. S. Moghdam and W. K. Tso, "Pushover analysis of asymmetric and set-back multi-story buildings", 12th World conference on earthquake engineering, 1093, pp 1-8,2000
13. . Dalal Sejal P, Vasanwala S A and Desai A K, "Performance Based Seismic Design of Structure: A review", International Journal of Civil and Structural Engineering, vol. 1, no. 4, pp 795-803, year 2011.

Nonlinear Static Analysis Pushover Analysis Performance Based Seismic Assessment