A roof drain penetrates an exterior concrete wall at a height of eighteen inches above the dock slab, maintaining a minimum slope of one-eighth inch per foot. The drain connects via a threaded connection to a polyvinyl chloride cow tongue outlet. Sealant is applied as required around the wall penetration. The finish floor level is indicated relative to the drain assembly.
ABOVE DOCK SLAB 18" SLOPE 1/8"/FT.MIN EXTERIOR WALL SEAL AS REQUIRED ROOF DRAIN SEE PLAN FOR SIZES THREADED CONNECTION FINISH FLOOR PVC COW TONGUE 1" = 1'-0" A521 C4 ROOF DRAIN SECTION DETAIL
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