AASHTO M 278-15 (2019) PDF Download

The AASHTO M 278-15 (2019) standard specifies the requirements and testing methods for poly(vinyl chloride) (PVC) pipes used in subsurface and surface drainage applications in transportation facilities. The standard covers both perforated and unperforated PVC pipes, as well as couplings and fittings. The pipes are designed to have smooth walls and are flexible, relying on soil support for stability.

The standard includes provisions for both solid wall PVC pipes and solid wall coextruded pipes. Coextruded pipes have three layers, with a center layer and concentric inner and outer layers. The inner and outer layers are made of either virgin or reworked PVC compound, while the center layer contains recycled PVC content.