A cast iron primary drain assembly is set into a depressed wood deck sump to collect roof runoff. The roof assembly consists of built-up roofing applied over the wood deck and sloped toward the drain. Framing supports the drain sump depression per the manufacturer's specifications.
CAST IRON PRIMARY DRAIN ASSEMBLY, INSTALL PER MANUFACTURER'S SPECIFICATIONS BUILT-UP ROOFING, INSTALL PER ROOFING MANUFACTURER'S SPECIFICATIONS 3 A8.3 WOOD DECK DRAIN SUMP DEPRESSION SCALE: 1/2" = 1'-0" 4 CRICKET
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