REGULATORY · INDIA
India withdraws revised earthquake hazard zoning notification
Change
India’s Centre withdrew its November 6, 2025 notification that introduced revised earthquake hazard zoning under IS 1893 (Part 1): 2025.
Why it matters
The Bureau of Indian Standards issued a Gazette notification on November 6, 2025 introducing revised earthquake hazard zoning under IS 1893 (Part 1): 2025. The Centre withdrew that notification less than four months later. The revised framework had allowed peak ground acceleration values to rise close to 1g. Global practice was described as generally keeping peak ground acceleration values closer to 0.4g.
Implications
- • Design and compliance baselines tied to the withdrawn IS 1893 (Part 1): 2025 hazard zoning revision are no longer anchored to that notification.
- • Costing and engineering assumptions that were being adjusted to accommodate near-1g peak ground acceleration values are no longer tied to the withdrawn framework.
Who is affected
- • Structural design and engineering teams
- • Building and construction project developers
- • Infrastructure project owners and authorities
- • Metro Rail corporations
Source
Topics
World & Politics Policy & Regulation Climate & Environment Environmental Regulation