AASHTO MP 40-19 (2021) PDF Download

AASHTO MP 40-19 (2021) is a standard specification that outlines the requirements and testing methods for steel-reinforced polyethylene (PE) ribbed pipe, couplings, and fittings. This standard specifically covers pipe diameters ranging from 1650 mm to 3000 mm (66 in. to 120 in.).

The specification covers various aspects of the pipe, including materials, workmanship, dimensions, perforation, pipe stiffness, impact resistance, tensile strength of seams, shape stability, joining systems, and form of markings. The steel-reinforced PE ribbed pipe is primarily used for surface and subsurface drainage applications, such as culverts and storm drains, where the soil provides support to its flexible walls.

Attention is drawn to the need for protection of the exposed portions of the pipe in locations where the ends may be exposed, due to considerations of the combustibility of PE, prolonged exposure to ultraviolet radiation, and corrosion of the steel reinforcement.

It is important to note that this specification solely covers the materials requirements of the steel-reinforced PE ribbed pipe. The structural design and proper installation procedures are provided in other AASHTO standards, such as the AASHTO LRFD Bridge Design Specifications and AASHTO LRFD Bridge Construction Specifications. However, upon request, manufacturers are required to provide profile wall section details for a full engineering evaluation.