456-2000 IS Plain and Reinforced Concrete-Code of Practice is an Indian Standard code of practice for plain and reinforced concrete general structural application. It contains a wealth of information about the many features of concrete. It is divided into five parts and eight annexures: Section 1: Introduction; Section 2: General requirements; Sections 3 to 5: Specific requirements for common types of structures; Sections 6 to 9: Special treatments for specific applications; Annexure A: General provisions relating to reinforcement; Annexure B: General provisions relating to joints in concrete structures; Annexure C: General provisions relating to materials other than cement; Annexure D: General provisions relating to forms; Annexure E: General provisions relating to testing; Annexure F: General provisions relating to drawings and specifications. The latest edition was published in 2000. It replaces all previous editions of the Code from its first publication in 1955 up to and including the 1995 edition. The 2000 edition includes new requirements for energy conservation in buildings using concrete, changes to the definitions of certain terms, and corrections to errors found in the 1995 edition. In India, the code is published by the Indian Institute of Concrete Technology (IICT). The code is used by engineers while designing structures made of concrete. An engineer will usually use a combination of standards to design any given concrete structure.