Abstract

This paper compares the seismic design provisions of the existing Indian Seismic Code IS 1893 (part 1): 2002 [1] and the current draft version of Indian Seismic Code IS 1893 (part 1): 2016 [2] to address the differences in their philosophies and applicability. Significant differences are observed in these documents for specifying different parameters such as empirical formulas for calculating time period, building importance factor, response reduction factor, design acceleration coefficient. Moreover, in draft code, additional clarity regarding different types of irregularity of structural systems, effect of masonry infill works on design of framed building, simplifying torsional provisions and simplified method of liquefaction potential analysis are carried out as extra items. Similarities and differences among both codes are illustrated here in the form of tables and graphs.

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