Comparative Technical Review of IS 456:2000 and IS 456 (Draft-5): Design Philosophy, Durability Governance and Professional Impact
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The proposed evolution of IS 456 into IS 456 (Draft-5) marks a decisive recalibration of structural concrete philosophy in India. Whereas IS 456:2000 was predominantly strength-oriented within a prescriptive limit-state framework, Draft-5 advances a performance-governed doctrine integrating strength, serviceability control, durability verification, and lifecycle accountability.
This study presents a structured comparative technical review of the two frameworks, examining scope integration, serviceability elevation, exposure-driven durability reasoning, and documentation governance. The analysis indicates a clear migration from tabulated compliance toward engineered performance justification, with measurable implications for detailing density, material specification, and professional workflow.
Draft-5 therefore represents not a routine revision, but a governance transition—shifting Indian structural design from strength sufficiency to accountable, service-life–oriented performance.
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References
Bureau of Indian Standards (2000). IS 456: Plain and Reinforced Concrete – Code of Practice. New Delhi, India.
Bureau of Indian Standards (Draft Circulation). IS 456 (Draft-5): Structural Concrete – Code of Practice. New Delhi, India.
Bureau of Indian Standards (2012). IS 1343: Prestressed Concrete – Code of Practice. New Delhi, India.
European Committee for Standardization (2004). EN 1992-1-1: Eurocode 2 – Design of Concrete Structures – General Rules and Rules for Buildings. Brussels.
American Concrete Institute (2019). ACI 318: Building Code Requirements for Structural Concrete. Farmington Hills, MI, USA.
Fédération Internationale du Béton (fib) (2010). Model Code for Concrete Structures 2010. Lausanne, Switzerland.
fib Bulletin 34 (2006). Model Code for Service Life Design. Lausanne, Switzerland.
ISO 15686-1 (2011). Buildings and Constructed Assets – Service Life Planning. International Organization for Standardization.
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