Sanitary drainage and overflow piping schematic detailing four-inch diameter pipe runs labeled SD and OD with associated area calculations of 74 square feet, 165 square feet, 335 square feet, and 145 square feet. The schematic shows vertical drops with funnel inlets connecting to horizontal pipe runs typically sized at four inches in diameter.
SD 44 SD SD SD SD SD 34 OD 34 4"SD OD OD OD OD 4"OD OD 37 SD 37 SD 35 OD 36 SD 36 SD OD 35 4"SD 4"OD 74 SF 165 SF 335 SF 145 SF 4"Ø TYP. 4"SD 4"OD 4"SD 4"OD
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