Earthquake Zoning:

Seismic Zones:

    In most countries, the macro level seismic zones are defined on the basis of
Seismic Intensity Scales. In this guide, we shall refer to seismic zones as
defined with reference to MSK Intensity Scale as described in Appendix I for
buildings.
- Zone A: Risk of Widespread Collapse and Destruction (MSK IX or greater),
- Zone B:   Risk of Collapse and Heavy Damage (MSK VIII likely),
- Zone C:  Risk of Damage (MSK VII likely),
- Zone D:  Risk of Minor Damage (MSK VI maximum).
    The extent of special earthquake strengthening should be greatest in Zone A
and, for reasons of economy, can be decreased in Zone C, with relatively little
special strengthening in Zone D.
 

Earthquakes which occurred in India