Seismic Performance of RC Multi Storey Building Resting on Sloping Ground

The buildings on sloping ground different from other buildings. The buildings in hilly areas have to be configured differently, resulting in adoption of either a Step back building or a Step back set back building. The various floors of such buildings step backs towards hill slope and at the same time buildings may have setbacks also. These buildings are very irregular, resulting in varying column heights. In the present study, Equivalent Static Analysis and Response Spectrum analysis as per IS: 1893 (part 1): 2002 have been conducted on hill slope buildings with varying number of bays across slope direction and having varying slope angles with the horizontal using ETABS 9.7.4 software. The results were obtained in the form of Time Period, top storey displacement, base shear, storey drift and shear force induced in columns. It is observed that the short columns on uphill side attracts maximum shear force, are the worst affected during seismic excitation and Step back building could prove more vulnerable than other configuration of building.