Over the years, BIS has issued six amendments to IS 456:2000 to incorporate new materials and practices. The "latest amendment" refers to the final one in this series:
To understand the "latest" standards, it is essential to know what has come before. The Bureau of Indian Standards (BIS) first published the code for concrete practice in 1953 under the title "Code of practice for plain and reinforced concrete for general building construction". Since then, it has undergone significant revisions to keep pace with evolving concrete technology and design philosophies: is 456 latest amendment pdf
Recent Amendments to IS 456:2000 - Enhancing Durability and Sustainability of Concrete Structures Over the years, BIS has issued six amendments
: Incorporates specifications for Composite Cement and Portland Calcined Clay Limestone Cement (as per IS 18189) for use in reinforced concrete. Since then, it has undergone significant revisions to
Adds restrictions on using certain cements in underground structures or contact with groundwater in cold climates (predominantly below 15°C).
Introduces specifications for Composite Cement and Portland Calcined Clay Limestone Cement (IS 18189).
The old code primarily focused on two limit states: and Serviceability (deflection and cracking). The 2025 draft revolutionizes this by introducing six core design criteria , making the code truly performance-based: