ANALYZING G+15 BUILDING WITH AND WITHOUT STRUTS AND SHEAR WALLS

Abstract

This paper presents the comparison between the building with and without shear wall and struts. Design of high-rise buildings is more complex in general than low-rise buildings and medium-rise buildings. Simple RCC frame structure comprises of only beams and columns which sometimes in high-rise building are not enough to fulfil the strength and durability criteria unless they are provided with large cross-sectional area of columns and beams. But providing large cross-sectional area of beams and columns is not feasible all the time. Therefore, some additional members, like shear walls, struts etc, become essential to support the structure. Therefore, in order to understand this concept, G+15 storey building was analyzed and designed in STAAD.Pro. Dynamic seismic analysis (by Response Spectrum Method in zone-IV as per IS: 1893-2016) was used. Different parameters were recorded from the postprocessing of STAAD.Pro and then comparative cost analysis was done. Results of the analysis for G+15 building show that the maximum displacement in Type A (building without shear walls and strut), Type B (building with strut) and Type C (building with shear walls) is 160.82 mm, 67.74 mm and 84.71 mm respectively. Therefore, displacement in Type B building is minimum. Type A uses minimum quantity and cost of concrete and Type B uses minimum quantity and cost of steel. Total cost (concrete and steel) of Type A, Type B and Type C works out to be Rs 276.65 lakhs, Rs 277.90 lakhs and Rs 322.41 lakhs respectively. Therefore, for G+15 building, Type A is the optimum building as it involves minimum total cost of building and it is found economical and safe.