Seismic evaluation and appraisal of retrofitting techniques to reinforced concrete buildings

Abstract

Coimbatore is a fast growing city in India which is located in seismic Zone III based on the IS 1893 Part I 2002 and base map as per digitized data of survey of India Many reinforced concrete frame buildings in Coimbatore were designed and built prior to 2002 The seismic code IS 1893 was revised in 2002 Hence buildings built prior to 2002 do not comply with the codal requirement Further some of the Coimbatore buildings built over the past few years even after 2002 are seismically deficient because of lack of awareness of builders regarding the seismic behavior of structures Most of the existing buildings in this city are designed for gravity loads only Most of the buildings which have infilled walls have not considered infills in their design