AASHTO M 294-21 PDF Download

The AASHTO M 294-21 standard provides requirements and test methods for corrugated polyethylene (PE) pipe, couplings, and fittings used in surface and subsurface drainage applications. The standard covers nominal sizes ranging from 300 to 1500 mm.

The specification includes provisions for materials, workmanship, dimensions, pipe stiffness, environmental stress crack resistance, joining systems, brittleness, and markings. It sets out the requirements for corrugated polyethylene pipe, which is designed to collect and convey drainage water through open gravity flow in applications such as culverts and storm drains.

It is important to note that if the ends of the polyethylene pipe may be exposed, precautions should be taken to protect them from combustibility and prolonged exposure to ultraviolet radiation. However, the specification does not include requirements for bedding, backfill, or earth cover load. The successful performance of the product relies on proper bedding, backfill, and installation, as described in AASHTO's LRFD Bridge Design Specifications and LRFD Bridge Construction Specifications.

The standard allows the manufacturer to provide additional profile wall section detail upon request for a full engineering evaluation.