Four-inch sanitary drain and overflow drain piping connects drainage from roof areas with designated square footages including 216 square feet, 125 square feet, and 116 square feet. Piping layouts incorporate four-inch diameter typical sizing with designated sanitary drain and overflow drain riser markers.
SD 47 SD SD 4"SD OD OD 4"OD OD 42 SD 42 SD 40 OD 41 SD 41 SD SD OD 40 4"SD 4"OD 216 SF 125 SF 116 SF 4"Ø TYP. 4"SD 4"SD 4"OD
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