IS 5499 : 1969 Code of practice for construction of underground air-raid shelters in natural soil

1 Scope

1.1 This standard lays down basic requirements of design andmaterials for the construction of underground air-raid shelters innatural soil for protection of persons against explosion ofconventional bombs.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 269 :1967Specification for ordinary, rapid-hardening andlow heat Portland cement

IS 432 : Part I :1966 Specification for mild steel and mediumtensilesteel bars and hard-drawn steel wire for concretereinforcement : Part I Mild steel and mediumsteel bars

IS 456 :1964Code of practice for plain and reinforcedconcrete

IS 1139 :1966Specification for hot rolled mild steel andmedium tensile steel deformed bars for concretereinforcements

IS 1786 :1966Specification for cold twisted steel bars forconcrete