Plumbing · P-3E76S

Roof Drainage Riser Diagram with Tributary Areas

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This plumbing riser diagram outlines roof drainage piping with designated four-inch and six-inch rain water leaders and overflow drains. Each drain connection specifies its corresponding tributary area ranging from 1,750 square feet up to 10,360 square feet. The schematic maps out the collection branches and main lines to determine pipe sizing requirements based on roof drainage loads.

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