India withdraws revised earthquake zoning notification
Change
India withdrew the November 6, 2025 Gazette notification that introduced IS 1893 (Part 1):2025 and reinstated the IS 1893 (Part 1):2016 seismic code effective March 3, 2026.
Why it matters
The decision blocks immediate application of the higher probabilistic seismic hazard parameters and the new Zone V/VI classifications introduced under the 2025 framework. That prevents projects from being required to adopt stronger foundation, reinforcement and peak-ground-acceleration design standards until a new standard is issued.
Implications
- • Metro Rail corporations' engineering and project management teams must continue designing, certifying and tendering works to IS 1893 (Part 1):2016 specifications until a fresh Gazette notification mandates otherwise.
- • Developers of under-construction high-rise and large infrastructure projects must avoid reissuing structural designs or seeking revised financial closures predicated on the 2025 seismic parameters unless formally instructed to do so.
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Topics
Policy & Regulation Regulatory Actions Real Estate Environmental Regulation