Gallons Per Square Foot Of Roof

So a 50 x 20 roof is 600 x 240 multiply the roof dimensions by the number of inches of rainfall.

Gallons per square foot of roof. Code to add this calci to your website. Of water in a gallon 0 623 gallons per hour. Max area of roof draining to one down. 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.

Sq ft safe for maximum rainfall reduce by 10 per 90 degree turn. To a depth of 1 in 1 hour. Up to 6 12 7 12 8 12. Roof area square feet per linear ft of gutter underneath.

The collectable rainwater from the roof can be calculated in gallons using this calculator based on the rainfall and area. Take a guess what is the volume of water that runs off a 1 000 square foot roof during a 1 rain storm. Or 0312 gallons per minute sq. To calculate the runoff from any given rainfall.

4 ft 2. 1 us gallon 231 cubic inches. Where rainfall rate is expressed in inches per hour and roof area is given in square feet. 5 ft 2.

Roof area the 3 inch rainfall will produce 18 700 gallons in one hour at the rate of 312 gallons per minute. Using a 10 000 sq. The answer is about 623 gallons. Converting this to gallons per minute per square foot gpm ft 2.

Of water 231 sq in.