IS 456:2000, "Plain and Reinforced Concrete – Code of Practice," is the primary document governing concrete construction in India. First introduced in 1964 and revised in 1978, 2000, and with periodic amendments, the code sets standards for materials, workability, mix design, structural design, durability, and construction practices.
The latest amendment (Amendment No. 4, reaffirmed in 2021) introduced critical updates aligned with modern construction technology, durability requirements, and safety norms. Engineers, contractors, and students must stay updated to ensure compliance with Indian construction laws and quality standards.
As of April 2026, Amendment No. 6 (June 2024) is the latest officially issued amendment to IS 456:2000
, the Indian Standard Code of Practice for Plain and Reinforced Concrete Fifth Revision (IS 456:202X)
is currently in the draft and public comment phase, the 2000 version (reaffirmed in 2021) remains the active legally binding standard. Latest Amendment Breakdown: Amendment No. 6 (June 2024) is 456 latest amendment pdf
This update introduced several technical changes to align with modern materials and sustainability goals: New Cement Types : Inclusion of Composite Cement (conforming to IS 16415) and Portland Calcined Clay Limestone Cement (conforming to IS 18189) for use in reinforced concrete. Admixture Guidelines
: Updates on the combined use of fly ash and ground granulated blast furnace slag (GGBS) with OPC, including specific minimum cement content and maximum ash/slag percentages. Water-Cement Ratio
: Adjustments to maximum free water-cement ratios when using new cement types like Portland calcined clay limestone cement. Strength Testing
: Revisions to concrete strength testing procedures and guidelines for bond stress values in reinforcing bars. Future Outlook: IS 456 Fifth Revision IS 456:2000, "Plain and Reinforced Concrete – Code
A comprehensive "Fifth Revision" is currently being finalized by the Bureau of Indian Standards (BIS) . Key features expected in this major update include: Performance-Based Design
: Shifting focus toward durability, robustness, and restorability rather than just safety. Expanded Scope
: Explicit inclusion of concrete portions in steel-concrete composite structures. New Technologies
: Provisions for Self-Compacting Concrete (SCC) and Steel Fiber Reinforced Concrete (SFRC). Note on Verification: As of April 2026, Amendment No
You can verify the status of current standards or download amendments directly from the BIS Standards Portal draft changes in the upcoming 5th revision, or do you need help summarizing specific clauses from Amendment 6?
IS 456 Amendment 6 Overview | PDF | Concrete | Cement - Scribd
Since I am an AI, I cannot directly upload or create a downloadable PDF file. However, I can generate the content, structure, and technical clauses for the latest amendments to IS 456 (Plain and Reinforced Concrete - Code of Practice).
This code governs concrete construction in India. The most significant recent update is Amendment No. 2 (August 2023), following Amendment No. 1 (January 2022).
Below is a text-based technical summary of these latest amendments, formatted so you can copy-paste it into a document editor (like Word) and save it as a PDF for your use.
A: 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.