IS:456-1978 CODE FOR PRACTICE ADOPTED BY THE INDIAN STANDARD HAVE BEEN TIME TO TIME MODIFIED AND REVISED BY THE COUNCIL OF THE CIVIL ENGINEERING DEPARTMENT.

INDIAN STANDARD CODE OF PRACTICE FOR PLAIN AND REINFORCED CONCRETE.:-- IS :456-1978 the Indian standard was adopted by the Indian standard institution after the draft finalization of the cement and concrete and was according approved by the civil engineering council during 1978 .The standard was first published in 1953 under the title code of practice for plain and reinforced concrete for general building construction etc and subsequently revised in 1957 and was further revised during 1964 and published under the modified code thus enlarging the scope of use of this code along with number of changes and the addition. The present revision was taken up with a view to keeping abreast with the rapid development in the field of concrete technology and also to bring in further clarifications and the modifications in the light of experience gained while applying the provision of the earlier versions of the code to practical approach and situations arrived .The format and arrangements of clauses in the code for practice have been changed from the earlier version .The matter has now been divided into the six sections (1) General (2) Materials, workmanship, inspection and Testing (3) General Design requirements (4) Special design requirements for structural members and system adopted.(5) Structural design (Limit State method) (6) Structural design (Working stress Method) .An attempt has been made to unify the the approach for the design of reinforced concrete and prestressed concrete structures and the code of practice for prestressed concrete (IS :1343)is being revised simultaneously hence the section 2and 3 could be applicable to both the codes , except where modified in the prestressed concrete code .The recommendations of ISO 3898 -1976 have been taken into consideration