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IITK-GSDMA Guidelines for Seismic Design of Liquid Storage Tanks - Provisions with Commentary and Explanatory Examples

Sudhir K. Jain, O.R. Jaiswal

2009/10

Liquid storage tanks are commonly used in industries for storing chemicals, petroleum products, etc. and for storing water in public water distribution systems. Importance of ensuring safety of such tanks against seismic loads cannot be overemphasized.

Indian seismic code IS 1893:1984 had some very limited provisions on seismic design of elevated tanks. Compared to present international practice, those provisions of IS 1893:1984 are highly inadequate. Moreover, the code did not cover ground-supported tanks. In 2002, revised Part 1 of IS 1893 has been brought out by the Bureau of Indian Standards (BIS). The other parts, one of which will contain provisions for liquid storage tanks, are yet to be brought out by the BIS.

In the above scenario, to assist the designers for seismic design of liquid storage tanks, it was decided to develop the present document under the project “Review of Building Codes and Preparation of Commentary and Handbooks” assigned by the Gujarat State Disaster Management Authority, Gandhinagar to the Indian Institute of Technology Kanpur in 2003. The provisions included herein are in line with the general provisions of IS1893 (Part 1): 2002 and hence should pose no difficulty to the designers in implementation. To facilitate understanding of the provisions, clause-by-clause commentary is also provided. Further, six explanatory solved examples are provided based on the provisions of these Guidelines.

National Information Center of Earthquake Engineering (NICEE)

India

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