Riser diagram detailing the connection of domestic cold water and rainwater piping from the basement water tanks to the upper distribution piping. A three-inch domestic cold water pipe rated at two hundred fifteen fixture units and a three-inch rainwater pipe rated at four hundred eighty-nine fixture units connect to the basement water supply pipes. Additional fixture connections labeled EWC-1 and LV-1 tie into the vertical risers.
RW EWC-1 EWC-1 LV-1 LV-1 3" DCW (215 FU) 3" RW (489 FU) DCW FROM BASEMENT WATER TANKS TO ABOVE PIPES TO BE CONNECTED TO BASEMENT WATER SUPPLY PIPES
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