Irregularity in the RC construction practices in hilly region Shimla & different Retrofitting Schemes

Due to lack of plain terrain in Shimla, it offers sloppy terrain for construction site. Behaviour of buildings on sloppy terrain behaves different than the building on the plain terrain. Past construction practices in Shimla includes common irregularity such as soft storey, mass irregularity, torsional irregularity, unsymmetrical layout of plan, vertical irregularity and pounding. Over the past earthquakes and research papers have shown that RC buildings in sloppy terrain affects more. The present study investigates the irregularities (Table 4&5 of IS 1893 (Part-1): 2002) in the RC construction practices in hilly region (Shimla). The behaviour of (G+3) storey building with regular and irregular configurations is checked for the linear and non linear analysis based on studies that had done.