Effect of Different Foundation Systems on Response Reduction Factor of R.C.C Frame Type Staging Using Non-Linear Static Push-Over Analysis

Role of Response reduction factor in seismic design of EWT is important, thus effect of different foundation system on soil-structure interaction of R.C.C frame staging water tank is carried out for find out effect of soil-flexibility on response reduction factor. For this purpose elevated water tank of storing capacity of 1000 m3 with different filled conditions, different foundation systems (raft, isolated), soil data of different location of Ahmedabad metropolitan city with help of institute of seismological research (ISR). RC water tank is analyzed using displacement controlled non-linear static pushover analysis to evaluate response reduction factor as per ATC-19 with and without considering soil-flexibility. Three different types of soil conditions representatives of hard soil, medium soil and soft soil has been considered in this study. So aim of study is to find out response reduction factors for different soil conditions with different type of foundation systems. Study reveals that isolated footing has higher value of response reduction factor compare to raft foundation.