Gallons Per Square Foot Of Roof

4 ft 2.

Gallons per square foot of roof.

Rainwater can be collected from the roofs using the rain water harvesting method. Take a guess what is the volume of water that runs off a 1 000 square foot roof during a 1 rain storm. Take the dimensions of the footprint of your roof and convert them to inches. Code to add this calci to your website.

Using a 10 000 sq. Converting this to gallons per minute per square foot gpm ft 2. So a 50 x 20 roof is 600 x 240 multiply the roof dimensions by the number of inches of rainfall. For example a 3 inch per hour rainfall will build up to a 3 inch depth on a flat roof in one hour at the rate of 1 87 gallons per hour sq.

5 ft 2. The collectable rainwater from the roof can be calculated in gallons using this calculator based on the rainfall and area. Where rainfall rate is expressed in inches per hour and roof area is given in square feet. To a depth of 1 in 1 hour.

Of water 231 sq in. Up to 6 12 7 12 8 12. Roof area the 3 inch rainfall will produce 18 700 gallons in one hour at the rate of 312 gallons per minute. Of water in a gallon 0 623 gallons per hour.

Sq ft safe for maximum rainfall reduce by 10 per 90 degree turn. 1 us gallon 231 cubic inches. To calculate the runoff from any given rainfall. 1 inch of rainfall in an hour will cover 1 sq ft.

Or 0312 gallons per minute sq.