AASHTO M 278-15 (2019)

AASHTO M 278-15 (2019) covers the requirements and methods of test for smooth-wall perforated and unperforated poly(vinyl chloride) (PVC) plastic pipe, couplings and fittings for use in subsurface drainage and surface drainage (culverts) of transportation facilities, where soil support is given to its flexible walls in all applications. It includes provisions for solid wall and solid wall coextruded poly (vinyl chloride) (PVC) plastic pipe. Solid wall coextruded pipe has three layers including a center layer and concentric inner and outer layers. The inner and outer layers are made of virgin or reworked PVC compound and the center layer has external recycled PVC content.