1.1 This specification coversrequirements and test methods for triple wall polypropylene pipeand fittings. The nominal inside diameters covered are 30 to 60 in.[750 to 1600 mm].
1.2 The requirements of thisspecification are intended to provide pipe and fittings suitablefor underground use for non-pressure sanitary sewer systems. Pipeand fittings produced in accordance with this specification shallbe installed in compliance with Practice D2321.
1.3 This specification covers pipeand fittings with an essentially smooth interior wall, anessentially smooth exterior wall and an annular corrugated profilemiddle wall (Fig. 1).
1.4 The values stated in either SIunits or inch-pound units are to be regarded separately asstandard. The values stated in each system may not be exactequivalents; therefore, each system shall be used independently ofthe other. Combining values from the two systems may result innon-conformance with the standard.
1.5 The followingprecautionary statement applies only to Section 7 of thisspecification. This standard does not purport to address allof the safety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establishappropriate safety and health practices and determine theapplicability of regulatory limitations prior to use.