IS 456:1978 provided the foundation for modern concrete construction in India. It introduced the transition from Working Stress Method (WSM) to Limit State Method (LSM). Code of Practice for Plain and Reinforced Concrete. Published: September 1978. Replaced By: IS 456:2000.
If you are a student at an AICTE-approved engineering college or a faculty member, your institution's library may have purchased an institutional license to BIS standards. Many colleges have a or a library server where students can download old standards for free. Contact your librarian and ask for the "Withdrawn IS Codes" section. is 456 code 1978 free download pdf