This specification covers reinforced concrete pipe designed for specific D-loads and intended to be used for the conveyance of sewage@ industrial wastes@ and storm water@ and for the construction of culverts. This specification is applicable for orders in either SI units (M 242M) or in inch-pound units (M 242). SI units and inch-pound units are not necessarily equivalent. Inch-pound units are shown in brackets in the text for clarity@ but they are the applicable values when the material is ordered to M 242. Note 1??Experience has shown that the successful performance of this product depends upon the proper selection of the pipe strength@ the type of bedding and backfill@ the care that the installation conforms to the construction specifications@ and provision for adequate inspection at the construction site. This specification does not include requirements for bedding@ backfill@ the relationship between field load conditions and the strength designation of pipe@ or durability under unusual environmental conditions. These requirements should be included in the project specification.