N-12® Pipe from Advanced Drainage Systems is HDPE pipe designed for economy, durability and superior performance in gravity-flow drainage applications. The pipe is soil-tight and watertight, providing unsurpassed joint integrity, with built-in bell joints and fast push-together installation,

N-12 products are great for culverts, cross drains, storm sewers, landfills, and other public and private construction projects. Advances in polymer science and structural design have created a product that outperforms and outlasts concrete and metal pipe while maintaining its cost advantage. N-12 products offer structural strength, durability and hydraulic efficiency. See the charts in this brochure to understand how HDPE stacks up against competitor products.

A choice of joining systems are available, including Integral bell-and-spigot joints. Standard soil-tight and watertight joints are engineered for fast installation of long straight sewer lines that require soil-tight or watertight joint performance. Hinged split couplers and fabricated fittings provide cost effective connections for normal drainage installations. Injection molded HDPE couplers are available on fittings and repair couplers to meet specific joint performance requirements and provide installation savings. A complete line of fittings including tees, wyes, elbows, couplers and reducers are available in 4”-12” (100-300 mm) diameters for both soil tight and watertight applications.

For installation, it is important to properly place and use backfill material that will produce a pipe-soil interaction system capable of withstanding the applied loads. Specific instructions for N-12 pipe may be found in the Installation section of the ADS Water Management Drainage Handbook.

See the full document for specifications and applicable standards. Tables included on page 5 are recommended Manning’s “n” for design, weight comparison (pounds per foot), and pipe stiffness.

The performance of HDPE pipe has been researched and tested and the results are impressive. HDPE pipe (both standard single wall & N-12 pipe is solving drainage problems across the country. Studies include the PennDOT Deep Burial Study in Pennsylvania, the Olympic Highway in Salt Lake City, and the success of a complex drainage system for the McArthy Teszler Elementary in Spartanburg, South Carolina.