This document is the Single Wall Highway Pipe Specification. Scope, pipe requirements and material properties explained. Pipe dimension chart included.

This specification describes 3- through 15-inch (75 to 375 mm) single wall high density corrugated polyethylene highway pipe, for use in gravity-flow land drainage applications.

ADS single wall high density corrugated polyethylene highway pipe shall have annular interior and exterior corrugations. 3- through 10-inch (75 to 250 mm) pipe shall meet AASHTO M252, Type C or CP. 12- through 15-inch (300 to 375 mm) pipe shall meet AASHTO M294, Type C or CP.

Joints for 3- to 15- inch (75 – 375 mm) shall be made with split or snap couplings. Standard connection shall meet the soil-tightness requirements of AASHTO M252 or M294. Gasketed connections shall incorporate a closed-cell synthetic expanded rubber gasket meeting the requirements of ASTM D1056 Grade 2A2.

Fittings shall conform to AASHTO M252 or AASHTO M294 and pipe and fittings shall be made of polyethylene compounds that comply with the cell classification 424420C for 4- through 10-inch (100 to 250 mm) diameters, or 435400C for 12- through 15-inch (300 to 375 mm) diameters, as defined and described in ASTM D3350, except that carbon black content should not exceed 4%. The 12- through 15-inch (300 to 375 mm) pipe material shall comply with the notched constant ligament-stress (NCLS) test as specified in Sections 9.5 of AASHTO M294.

Installation shall be in accordance with ASTM D2321 and ADS recommended installation guidelines with the exception that minimum cover in trafficked areas for 3- through 15-inch (75 to 375 mm) diameters shall be one foot (0.3 m). Maximum fill heights depend on embedment material and compaction level.

ADS Single Wall Highway pipe, manufactured in accordance with AASHTO M252 or AASHTO M294, complies with the requirements in the Build America, Buy America (BABA) Act. A pipe dimensions chart is included.