After observing Indian earthquakes for numerous years, the Bureau of Indian Standards has actually divided the nation into five zones based on the seriousness of earthquakes. IS 1893-1984 reveals the different zones. The following I.S. codes are very useful in the design of earthquake-resistant buildings: 1. IS 1893-- 2002: Criteria for earthquake resistance design of structures. 2. IS 4928-- 1993: Code of practice for earthquake resistant design and building and construction of structures. 3. IS 13827-- 1992: Standards for improving earthquake resistance of low strength masonry structure. 4. IS 13920-- 1997: Code of practice for ductile detailing of reinforced concrete structures subjected to seismic forces. 5. IS 13935-- 1993: Standards for repair work and seismic strengthening of structures.