This specification covers nonreinforced concrete pipe to be used for the conveyance of irrigation water with working pressures, including hydraulic transients and for use in drainage. The concrete shall consist of cementitious materials, minerals, aggregates, and water. Cement shall conform to the requirements for Portland cement or shall be Portland blast-furnace slag cement, or slag modified Portland cement, or Portland-pozzolan cement conforming to the requirements except that the pozzolan constituent in the Type IP Portland-pozzolan cement shall be fly ash. The combination of cementitious materials used in the concrete shall be one of the following: Portland cement only, Portland blast furnace slag cement only, slag modified portland cement only, portland pozzolan cement only, a combination of Portland cement and fly ash, a combination of portland cement and ground-granulated blast-furnace slag or a combination of fly ash and ground granulated blast furnace slag. The specimens shall undergo external load test, absorption test and hydrostatic test. The material shall also conform to the required internal diameter and wall thickness.

1.1 This specification covers nonreinforced concrete pipe to be used for the conveyance of irrigation water with working pressures, including hydraulic transients, as shown in Table 1 and for use in drainage.

1.2 A complete SI companion to Specification C 118 has been developed—C 118M; therefore, no SI equivalents are presented in this specification.

Note 1R`12;This specification is for manufacturing and purchase only and does not include requirements for bedding, backfill, installation, or field repairs. The owner is cautioned that he must correlate field conditions with the characteristics of the pipe specified and provide inspection during installation.