The roof drain assembly RD-1 features a cast iron dome and roofing clamps securing the membrane directly into the drain body, set within insulation above a steel deck with an underdeck clamp. The overflow drain assembly OD-1 incorporates a two-inch overflow ring, cast iron dome, extension piece, and roofing clamps. A downspout nozzle DSN-1 matches the size of the connecting roof drain piping. All installations coordinate with architectural requirements.
ROOF DRAIN DSN-1 THIS POINT ROOFING INTO DRAIN AT ROOFING CLAMPS STEEL DECK UNDERDECK CLAMP ROOF DRAIN (DOWNSPOUT NOZZLE) ROOF DRAIN PIPING. ROOFING EXTENSION PIECE ROOF DRAIN THIS POINT SIZE SAME AS CONNECTING STEEL DECK INSULATION ROOFING CLAMPS INTO DRAIN AT EXTENSION PIECE RD-1 CAST IRON DOME OD-1 ROOF DRAIN DETAIL. NOTE: COORDINATE WITH ARCHITECT CAST IRON DOME 2" OVERFLOW RING
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