Defining of Optimum Location of Shear Wall in Setback Building

Irregularly shaped buildings have gained popularity in recent years from aesthetic requirements, limited land area, and the need for natural light and ventilation. Among these, setback buildings are a well-known type of vertical irregularity. These buildings tend to be more susceptible to seismic forces compared to regular buildings. However, by placing shear walls at suitable areas; their susceptibility can be significantly reduced. This study investigates the optimum position of shear walls in setback shape buildings. Four setback shape configurations of G+10 storeys were investigated: setback at Half, setback at two positions, setback on both sides, and setback on all four sides. ETABS analysis software was employed using Response Spectrum Method as per NBC 105:2020. The findings of this study clearly establish the optimum positions for shear walls in setback-type buildings and demonstrate easily how shear walls can simply resist storey displacement and drift when subjected to seismic loading.