Effect of Increasing Height of Building on Design Results

Abstract

India is earthquake prone country and it is categorized into 4 seismic zones II, III, IV, V, with respect to the cruelty of the earthquakes. Guidelines as per code I.S 1893 (part 1:2002) are beneficial for regular and small, low rise buildings. When it comes to tall buildings, every structure is analyzed in an individual aspect. The response of building when dominate to seismic excitation can be classified in a number of ways. Structural analysis method can be mainly categorized into 4 methods are equivalent static, linear dynamic, non-linear static, non-linear dynamic. In the present paper is all about the effect of increasing height of building on design results. For analyzing the structure with their respective method static and dynamics analysis in terms of peak storey shear, base shear, lateral displacement, story drift and fundamental natural period. It includes modeling of ten cases of plan area 25m X 25m and the height is varied from 17.8m, 33.8m, 49.8m, 65.8m, 81.8m were analyzed in which five cases of seismic zone IV are taken into account and compared with five other cases of same configuration with seismic zone V. Models of different heights are developed with seismic zones IV and V in which G+4 and G+9 cases are analyzed with Fe 415, M25 and remaining G+14, G+19 G+24 cases are analyzed with Fe 500, M30 which is characterized strength of concrete and grade of concrete and compared these cases in both seismic zones IV and V with medium type of soil. All ten cases of G+4, G+9, G+14, G+19 and G+24 were analyzed through STAAD Pro. V8i by using response spectrum method.