05-12-2012, 05:57 PM
CRITERIA FOR EARTHQUAKE RESISTANT DESIGN OF STRUCTURES
1CRITERIA FOR EARTHQUAKE.pdf (Size: 3.45 MB / Downloads: 348)
This Indian Standard (Part 1) (Fifth Revision) was adopted by the Bureau of Indian
Standards, after the draft finalized by the Earthquake Engineering Sectional Committee
had been approved by the Civil Engineering Division Council.
Himalayan-Nagalushai region, Indo-Gangetic Plain, Western India, Kutch and Kathiawar
regions are geologically unstable parts of the country, and sonic devastating earthquakes
of the world have occurred there A major part of the peninsular India has also been
visited by strong earthquakes, but these were relatively few in number occurring at much
larger time intervals at any site, and had considerably lesser intensity The earthquake
resistant design of structures taking into account seismic data from studies of these Indian
earthquakes has become very essential, particularly in view of the intense construction
activity all over the country. It is to serve this purpose that IS I893: 1962
Recommendations for earthquake resistant design of structures was published and revised
first time in l966.
As a result of additional seismic data collected in India and further knowledge and
experience gained since the publication of the first revision of this standard, the sectional
committee felt the need to revise the standard again incorporating many changes. such as
revision of maps showing seismic zones and epicenters, and adding a more rational
approach for design of buildings and sub-structures of bridges. These were covered in the
second revision of IS 1893 brought out in 1970.