ICS 91.120.25                          CED 39

Reaffirmed 2021

1. Scope

1.1 This standard (Part 1) primarily deals with earthquake hazard assessment for earthquake-resistant design of (1) buildings, (2) liquid retaining structures, (3) bridges, (4) embankments and retaining walls, (5) industrial and stack-like structures, and (6) concrete, masonry and earth dams. Also, this standard (Part 1) deals with earthquake-resistant design of buildings; earthquake-resistant design of the other structures is dealt with in Parts 2 to 5.

1.2 All structures, like parking structures, security cabins and ancillary structures need to be designed for appropriate earthquake effects as per this standard.

1.3 Temporary elements, such as scaffolding and temporary excavations, need to be designed as per this standard.

1.4 This standard does not deal with construction features relating to earthquake-resistant buildings and other structures. For guidance on earthquake-resistant construction ofbuildings, reference may be made to the latest revisions of the following Indian Standards: IS 4326, IS 13827, IS 13828, IS 13920, IS 13935 and IS 15988.

1.5 The provisions ofthis standard are applicable even to critical and special structures, like nuclear power plants, petroleum re?nery plants and large dams. For such structures, additional requirements may be imposed based on special studies, such as site-specific hazard assessment. In such cases, the earthquake effects speci?ed by this standard shall be taken as at least the minimum.