1.1 This standard covers symbols and approximate dimensions of bends, and bending and fixing procedures for reinforcement.
1.2 The dimensioning and bending of bars specified in this standard applies principally to reinforcement bars conforming to IS: 432-1960 Specification for Mild Steel and Medium Tensile Steel Bars and Hard-Drawn Steel Wire for Concrete Reinforcement (Revised). They may also be used in the case of bars conforming to the following specifications with such modifications as may be found necessary:
IS: 1139-1959 Hot Rolled Mild Steel and Medium Tensile Steel Deformed Bars for Concrete Reinforcement
IS: 1786-1961 Cold Twisted Steel Bars for Concrete Reinfor-cement
IS 2502-1963 history
1964IS 2502-1963 Code of practice for bending and fixing concrete steel bars