IS 1893 : 2025 – Part 1 to 5, Latest Revision Pdf

C Civil Engineering Web · 4 weeks ago · 53 views

The bureau of indian standard has recently published the latest revision of IS 1893 : Part -1 and also shared the new part of IS 1893 which is especially dedicated to building structures. This new part is IS 1893:2025 part – 5. This comprehensive revision reflects India’s growing commitment to ensure safe, robust and resilient ... Read more

This comprehensive revision reflects India’s growing commitment to ensure safe, robust and resilient infrastructure in the country.

In previous version, IS 1893 (Part 1): 2016 (sixth revision) provided general requirements for earthquake resistant design of structures applicable for all structures and provisions related to buildings. In this seventh revision, general provisions and provisions related to buildings are covered in the following two parts:

IS 1893 (Part 1): 2025 Design earthquake hazard and criteria for earthquake resistant design of structures Part 1 General Provisions (seventh revision)

IS 1893 (Part 5): 2025 Design earthquake hazard and criteria for earthquake resistant design of structures Part 5 Buildings (seventh revision)

Major Changes in IS 1893 : 2025 Latest Version

Key changes made in this revision are:

Revised earthquake zone map of India based on probabilistic earthquake hazard assessment (PEHA);
The design horizontal acceleration coefficients are specified for each earthquake zone corresponding to different return periods, for use in design;
The response history method is strengthened by providing suites of far-fault ground motions for earthquake zones II, III, IV, V and VI, and of near-fault ground motions for earthquake zones V and VI whose response spectra envelope is to be the target design response spectrum.
A method is provided to account for soil flexibility in analysis and design;
The method to estimate liquefaction potential at a site is revised;
A specific clause on the protection of architectural elements and utilities in structures is introduced; and
Provisions related to three building typologies, namely masonry, concrete and steel buildings, are covered under different sections along with their admissible structural systems.