A roof drain assembly is centered within a four-foot wide roof drain sump, with the drain elevation set one inch below the sump perimeter. Tapered insulation slopes toward the drain at one-half inch per foot under the roofing system. Pipe insulation extends a minimum of two feet below the roof deck, with mechanical coordination required per MEP drawings.
ROOF DRAIN ASSEMBLY SLOPE PIPE INSULATION MINIMUM 2'-0" BELOW ROOF DECK. REFER TO MEP FOR ADDITIONAL INFORMATION SET DRAIN ELEV 1" BELOW SUMP PERIMETER BEGINNING OF 1/2" / FT SLOPED TAPERED INSULATION ROOFING SYSTEM SLOPE ROOF DRAIN SUMP 2' - 0" 2' - 0"
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