Primary and secondary roof drains are installed on a metal deck roof assembly featuring a one-half inch per foot roof slope. The primary roof drain coordinates with plumbing requirements and includes a roof sump receiver secured by an underdeck clamp beneath the metal deck. The secondary roof drain is fitted with a one-and-one-quarter-inch water dam and an extension sleeve set three-quarters of an inch above the primary drain extension sleeve. Both drain bowls tie into the roof assembly per the specified roof types and rely on underdeck clamps for structural support.
SECONDARY ROOF DRAIN 1 1/4" WATER DAM SET EXTENSION SLEEVE 3/4" ABOVE PRIMARY DRAIN EXTENSION SLEEVE ROOF SUMP RECEIVER UNDERDECK 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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