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ADS, Inc. Drainage Handbook Specifications ♦ 1-7 <br />N-120 MEGA GREENTM ST IB PIPE SPECIFICATION <br />Scope <br />This specification describes 4- through 60-inch (100 to 1500 mm) N-12 MEGA GREENTM ST IB pipe for <br />use in gravity -flow land drainage applications. <br />Pipe Requirements <br />N-12 MEGA GREEN ST IB pipe shall have a smooth interior and annular exterior corrugations. <br />• 4- through 60-inch (100 to 1500 mm) pipe shall meet ASTM F2648. <br />• Manning's "n" value for use in design shall be 0.012. <br />Joint Performance <br />Pipe shall be joined using a bell & spigot joint meeting ASTM F2648. The joint shall be soil -tight and <br />gaskets for diameters 12- through 60-inch, shall meet the requirements of ASTM F477. For diameters 4- <br />through 10-inch, the joint shall be soil -tight using an engaging dimple connection. Gaskets shall be <br />installed by the pipe manufacturer and covered with a removable, protective wrap to ensure the gasket is <br />free from debris. A joint lubricant available from the manufacturer shall be used on the gasket and bell <br />during assembly. <br />Fittings <br />Fittings shall conform to ASTM F2306. Bell and spigot connections shall utilize a welded bell and valley or <br />saddle gasket meeting the soil -tight joint performance requirements of ASTM F2306. <br />Material Properties <br />Material for pipe production shall be an engineered compound of virgin and recycled high density <br />polyethylene conforming with the minimum requirements of cell classification 424420C (ESCR Test <br />Condition B) for 4- through 10-inch (100 to 250 mm) diameters, and 435420C (ESCR Test Condition B) <br />for 12- through 60-inch (300 to 1500 mm) diameters, as defined and described in the latest version of <br />ASTM D3350, except that carbon black content should not exceed 4%. The design engineer shall verify <br />compatibility with overall system including structural, hydraulic, material, and installation requirements for <br />a given application. <br />Installation <br />Installation shall be in accordance with ASTM D2321 and ADS recommended installation guidelines, with <br />the exception that minimum cover in trafficked areas for 4- through 48-inch (100 to 1200 mm) diameters <br />shall be one foot. (0.3 m) and for 60-inch (1500 mm) diameter the minimum cover shall be 2 ft. (0.6 m) in <br />single run applications. Backfill for minimum cover situations shall consist of Class 1 (compacted) or <br />Class 2 (minimum 90% SPD) material. Maximum fill heights depend on embedment material and <br />compaction level; please refer to Technical Note 2.02. Contact your local ADS representative or visit our <br />website at www.adspipe.com for a copy of the latest installation guidelines. <br />Pipe Dimensions <br />4 6 8 10 <br />12 <br />15 <br />18 <br />24 <br />30 <br />36 <br />42 <br />48 <br />60 <br />(100) (150) (200) (250) <br />(300) <br />(375) <br />(450) <br />(600) <br />(750) <br />(900) <br />(1050) <br />(1200) <br />(1500) <br />4.8 6.9 9.1 11.4 <br />14.5 <br />18 <br />22 <br />28 <br />36 <br />42 <br />48 <br />54 <br />67 <br />(122) (175) (231) (290) <br />(368) <br />(457) <br />(559) <br />(711) <br />(914) <br />(1067) <br />(1219) <br />(1372) <br />(1702) <br />*Pipe O.D. values are provided for reference purposes only, <br />values stated for 12 <br />through 60-inch are ±1 inch. Contact a sales representative for exact <br />values <br />**All diameters available with or without perforations. <br />© ADS, Inc., August 2023 <br />