IS 9872 : 1981 Specification for precast concrete septic tanks

1 Scope

1.1 This standard covers the requirements for the manufactureand installation of small precast concrete septic tanks.

1.2 For recommendations on capacities, sizes, design, layout,construction and maintenance of septic tanks, methods of treatmentand disposal of tank effluent of domestic sewage of houses, flatsand such other residential buildings, where the number of usersdoes not exceed 50 persons, reference may be made to IS 2470 : PartI : 1968. For housing colonies, hostels, and boarding schools wherethe number of users range from 50 to 300, reference may be made toIS 2470 : Part II : 1971.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 269 :1976Specification for ordinary and low heatPortland cement

IS 383 :1970Specification for coarse and fine aggregatesfrom natural sources for concrete

IS 432 : Part I :1966 Specification for mild steeland mediumtensile steel bars and hard-drawn steel wirefor concrete reinforcement:Part I Mild steel and medium tensile steel bars

IS 432 : Part II :1966 Specification for mild steel andmediumtensile steel bars and hard-drawn steel wirefor concrete reinforcement:Part II Hard-drawn steel wire

IS 455 :1976Specification for Portland slag cement

IS 456 :1978Code of practice for plain and reinforcedconcrete

IS 1139 :1966Specification for hot-rolled mild steel,medium tensile steel and high yeild strengthsteel deformed bars for concrete reinforcement

IS 1489 :1976 Specification for Portland pozzolana cement

IS 1566 :1967Specification for hard-drawn steel wirefabric for concrete reinforcement

IS 1786 :1979Specification for cold-worked steel highstrength deformed bars for concretereinforcement

IS 2470 : Part I :1968 Code of practice for design andconstructionof septic tanks:Part I Small installations

IS 2470 : Part II :1971 Code of practice for design andconstructionof septic tanks: Part II Large installations

IS 2645 :1978Specification for integral cementwaterproofing compounds

IS 8041 :1978Specification for rapid-hardening Portlandcement

IS 8043 :1978Specification for hydrophobic Portland cement

IS 8112 :1976Specification for high strength ordinaryPortland cement

IS 9103 :1979Specification for admixtures for concrete