BIS has circulated a draft in 2023-24. Experts expect the final publication by late 2025 or early 2026 . Until then, Amendment No. 4 remains the latest.
Adds restrictions on using certain cements in underground structures or contact with groundwater in cold climates (predominantly below 15°C). is 456 latest amendment pdf
IS 456 (2000): Plain and Reinforced Concrete - Code of Practice BIS has circulated a draft in 2023-24
Provided minor updates to testing standards and material references. making it a single comprehensive code.
IS 1343 (Prestressed Concrete) is being merged into IS 456, making it a single comprehensive code.