Roof drain number 10 connects to four-inch roof drain piping and four-inch overflow drain piping serving two thousand five hundred square feet. The horizontal sanitary drainage piping is sized at four inches for three thousand four hundred square feet and five thousand five hundred square feet areas with a slope of one percent. The horizontal overflow drainage piping is also sized at four inches for three thousand four hundred square feet and five thousand five hundred square feet areas with a slope of one percent.
ROOF DRAIN #10 4" RD-1 (2,500 SF) 4" OD-1 (2,500 SF) 4"SD(3,400 S.F) S=1% 4"OD(3,400 S.F) S=1% 4"SD(5,500 S.F) S=1% 4"OD(5,500 S.F) S=1%
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