The Engineered Drainage For Railway Applications Brochure explains how N-12® pipe is the perfect choice for storm sewers, highways, airports, railroads and other construction projects with engineered drainage applications. N-12 pipe meets the requirements of ASTM F2306, AASHTO M252 and AASHTO M294 Type S.

Years of research and testing have produced a fast-coupling, watertight bell-and-spigot joint that incorporates patented technology developed in the aerospace industry. The sealing area of the bell is reinforced with a proprietary 2” (50 mm) polymer composite collar, which improves the joint’s integrity and dimensional control. A proprietary gasket design maximizes sealing, which meets ASTM F477 standards. The gasket is factory installed into the spigot to speed installation. The result is a design that meets or exceeds ASTM D3212 lab test and ASTM F2487 watertight field test requirements.

Due to advances in polymer science and structural design, N-12 pipe is a superior pipe material that outperforms and outlasts traditional pipe products, while keeping its cost advantage. Field research done in Ohio and Pennsylvania has placed HDPE pipe under more than 40 feet of fill. Even under harsh conditions, N-12 pipe has continued to give outstanding performance. Testing at Transportation Technology Center, Inc. (TTCI) in Pueblo, Colorado supports engineered loading conditions.

Proper installation is necessary for the long-term performance of any drainage pipe. Instructions for underground installation of plastic drainage pipes are contained in ASTM D2321. Specific instructions for N-12 pipe in railroad applications may be found in Standard Detail STD-111 and the ADS N-12 Pipe (per ASTM F2306) specification for railroad applications in this brochure.

A specification for ADS N-12 pipe (per AASHTO) is provided in this brochure. The scope of the specifications include, pipe requirements, joint performance, fittings & installation, pipe dimensions, chemical resistance, end treatments and additional design considerations.

The Engineered Drainage For Railway Applications Brochure includes a diagram of a typical railway installation and a diagram for the trench details.