Channels are 80” [2032 mm] long, 6-1/8” [156 mm] wide reveal and have a 4” [102 mm] throat. Modular channel sections are made of 0% water absorbent High Density Polyethylene (HDPE). Channels have a positive mechanical connection between channel sections that will not separate during the installation and mechanically lock into the concrete surround every 10” [254 mm]. Channels weigh less than 2.31 lbs.[1.05kg] per linear foot, have a smooth, 1-1/2” [38 mm] radiused self cleaning bottom with a Manning’s coefficient of .009 and .75% or neutral 0% built in slope. Channels have rebar clips standard to secure trench in its final location. Channels provided with standard DGC grates that lock down to frame. Zurn 5.375” [137 mm] wide reveal Ductile Iron Slotted Grate conforming to ASTM specification A536-84, Grade 80-55-06. Ductile Iron grate is rated class C per the DIN EN1433 top load classifications. Supplied in 20” [508 mm] nominal lengths with 1/2” [13 mm] wide slots, and 3/4” [19 mm] bearing depth. Grate has an open area of 28.1 in²/ ft. [59.5 cm²/m]. Channel shall be supplied with Cast Ductile Iron Frame which conforms to ASTM specification A536-84, Grade 60- 45-10. Supplied in 20” [508 mm] nominal lengths with 4 concrete anchors per section. Grate lockdown bars are to be integral to the frame. Frame supplied with dura-coated finish.
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