Primary and secondary roof drains are integrated into the roof assembly supported by a metal deck with a one-half inch per foot slope. The assembly features a roof sump receiver and an under deck clamp securing each drain unit. The secondary drain includes a one-and-a-quarter inch water dam and an extension sleeve set three-quarters of an inch above the primary drain. The primary roof drain coordinates with the plumbing layout, and the overall roof assembly is detailed per the architectural roof types.
SECONDARY ROOF DRAIN 1 1/4" WATER DAM SET EXTENSION SLEEVE 3/4" ABOVE PRIMARY DRAIN EXTENSION SLEEVE ROOF SUMP RECEIVER UNDER DECK CLAMP PRIMARY ROOF DRAIN RE: PLUMBING ROOF ASSEMBLY - SEE ROOF TYPES ROOF SUMP RECEIVER UNDER DECK CLAMP 1/2": 1' - 0" SLOPE METAL DECK B
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