What are IS Codes for Civil Engineering? IS codes, also known as Indian Standard codes, are a collection of standards formulated by the Bureau of Indian Standards (BIS) for diverse aspects of civil engineering. These codes offer guidelines, specifications, and safety prerequisites for construction materials, design parameters, testing techniques, and construction practices. They serve as a reference to guarantee consistency, safety, and excellence in civil engineering projects throughout India. List of IS Codes for Civil Engineering IS Code for Cement and Concrete IS 269:1989: Ordinary Portland cement, OPC 33 IS 383:1970: Coarse and Fine aggregates from natural sources for concrete IS 455:1989: Portland slag cement IS 456:2000: Code of practice for plain concrete and reinforced concrete (PCC and RCC) IS code >>> read more