Horizontal Pipe Discharge Through Roof

Then by the formula the flow in the pipe in gallons per minute is.

Horizontal pipe discharge through roof.

May be measured at horizontal distances x from the pipe exit of 6 12 or 18 inches. All open vent pipes that extend through a roof shall be terminated at least number typically 6 inches mm above the roof except that where a roof is to be used for any purpose other than weather protection the vent extensions shall be run at least 7 feet 2134 mm above the roof. The epa and other guidelines somewhat follow the standard codes for plumbing vent pipes which generally are vented above the buildings roof. Window or fresh air intake.

If it slopes upward the indicated discharge will be too high. 1 place the ruler on top of the discharge pipe and extend it out far enough out so that the plumb bob or ruler spans the length of the jet flow portion of discharge see figure xxx 2 slide the ruler back along the pipe as needed to measure the jet flow segment of discharge. 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. If it slopes downward the indicated discharge will be too low.

The most accurate results will be obtained when the pipe is truly horizontal. 2 56 times 24 times 2 squared divided by the square root. Then measure vertically to the top of the liquid discharge y say it is 25 inches.