IS 456
IS 456-2000 "Plain and Reinforced Concrete - Code of Practice" is an Indian Standard code of practice for general structural use of plain and reinforced concrete. The latest revision of this standard was done in year 2000, and reaffirmed 2021. This code uses the limit state design approach as well as the working stress design approach. However the Code recommends use of the limit state design approach. It is written for use in India. It gives extensive information on the various aspects of concrete. It contains five sections and eight annexes: The structural practice handbook SP:16-1980 "Design  Aids for Reinforced Concrete to IS:456-1978" has tables and charts that help structural engineers to design simple sections rapidly. Even though the design aid is based on the 1978 code, it continues to be used without revision as there have been no major changes to Section 5, on which the design aid is based. The IS 456:2000 code must be read along with other Indian standard codes which supplement it: