After observing Indian earthquakes for several years Bureau of Indian Standard has divided the country into five zones depending upon the severity of earthquake. IS 1893-1984 shows the various zones. The following IS codes will be of great importance for the design engineers:
IS 18932002: Criteria for Earthquake Resistant Design of Structures (5th revision).
IS 49281993: Code of practice for Earthquake Resistant Design and Construction of Buildings.
(2nd revision).
IS 138271992: Guidelines for Improving Earthquake Resistance of Low Strength Masonary Building.
IS: 139201997: Code of practice for Ductile Detailing of Reinforced Concrete Structures
Subjected to Seismic Forces.
IS: 139351993: Guidelines for Repair and Seismic Strengthening of Buildings.