Seismic Study on Step Back Buildings and Step Back Setback Buildings by Providing Bracing in the Soft Storey

RCC buildings located in hilly areas with irregular configuration need special attention while carrying out seismic analysis when compared with the RCC structures in level surface. A study on the seismic behaviour of step back building configuration and step back setback building configurations was carried out. To reduce the effect of soft storey developed in step back building and step back and setback buildings, bracings of different types were provided at ground floor level and analysed, as bracings function as horizontal load resisting system. This study was aimed to measure structural responses in terms of total storey displacement and inter-storey drift ratio. From the studies, it was concluded that chevron bracings performed well under seismic conditions in the case of step back setback buildings.