1989-10-10_REVISION - M1988112 (16)

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manually slotted within the drain sump area as shown on the Drawings. • The top and bottom shall be capped and a 1/4-inch air vent hole installed below the top cap. Couplings shall be slip-on, glued or threaded at the joints. The manufactured slotted section shall have three rows of slots spaced at 120' on maximum 1/2-inch centers. The slot widths shall be between 0.02 to 0.05 inches. The top section of pipe shall be anchored to the top synthetic liner with an HDPE liner boot and water proof clamp. The top of the pipe shall extend a minimum of six-inch above the liner crest. 8.6 Culvert Pioe The culvert pipe for the access road drainage shall be zinc- coated corrugated metal pipe (CMP) furnished and installed by the Contractor, as recommended by the manufacturer, to the Vines, grades, • ~ and dimensions shown on the Drawings. The CMP culverts shall have a minimum 14 gauge thickness with 1/2-inch deep grooves on 2-2/3- inch centers or equivalent. Pipe connections shall be banded with 12-inch minimum width metal straps provided by the manufacturer. The pipe shall be founded on and backfilled with Type 4 material as specified. Pipe lengths shall be as long as practical for shipping and installation to reduce the number of joints. CMP pipe and bands shall be transported, stored, and handled in such a manner as to prevent damage to the zinc coating and to prevent bending and distortion of the pipe, especially in the areas of the joints. CMP materials that have been damaged to the extent that the pipe cannot function as intended, as determined by 'the Engineer, shall be replaced by the Contractor at the Contractor's, own expense. The CMP shall be installed in strict accordance with the manufacturer's instructions and recommendations. To prevent damage • to the zinc coating, the pipe shall be handled with fabric, 41