Horizontal Pipe Discharge Through Roof

2 56 times 24 times 2 squared divided by the square root.

Horizontal pipe discharge through roof.

If it slopes upward the indicated discharge will be too high. In modern roof drainage design a horizontal gravity pipe could be sloped to take up to two thirds water with a one third air mix depending on gradient. The grade on the horizontal pipe also dictates how far the pipe can travel before it encroaches into the useful building space and as such requiring a vertical downpipe. Then measure vertically to the top of the liquid discharge y say it is 25 inches.

May be measured at horizontal distances x from the pipe exit of 6 12 or 18 inches. Window or fresh air intake. For example â measure a distance x of 24 inches across the top of the flowing discharge from the end of a 2 inch diameter pipe. New york state just raised plumbing vent pipe code from 12 inches to 18 inches above the roof and at least 10 feet horizontal distance from any opening to the building i e.

The epa and other guidelines somewhat follow the standard codes for plumbing vent pipes which generally are vented above the buildings roof. Then by the formula the flow in the pipe in gallons per minute is. If it slopes downward the indicated discharge will be too low.