How do you convert inches of rain to gallons?
How do you convert inches of rain to gallons?
Multiply the previous result by one inch of rainfall. The result is that one inch of rain yields 4,014,489,600 cubic inches of water per square mile. Divide the result by 231 cubic inches per gallon, and obtain the result of 17,378,743 gallons per square mile for an inch of rainfall.
How do you convert inches per hour to gallons per minute?
1 cubic inch per hour (in3/hr) = 0.000072 gallons US per minute (gal/min)
How do you calculate precipitation rate?
Precipitation rate (PR) is a calculation of the flow rate (application rate) over the square footage of the zone. 96.25 = constant that converts gallons per minute (GPM) to inches per hour. It is derived from 60 minutes per hour divided by 7.48 gallons per cubic foot, times 12 inches per foot.
How do you calculate gpm for a roof?
For example, assume you are draining a 20,000 square foot roof with a roof slope between 6″ and 12″, your project location’s historic rainfall is 1.8″. Your GPM calculation is 20,000 x . 094 = 1880 gpm (gallons per minute).
What does 1 inch of rain look like?
One (1.00) inch of rain – A light moderate rain never reaches this amount, heavy rain for several hours (2-5 hours). There would be deep standing water for long periods of time.
How much precipitation is needed for rain?
Light rain — when the precipitation rate is < 2.5 mm (0.098 in) per hour. Moderate rain — when the precipitation rate is between 2.5 mm (0.098 in) – 7.6 mm (0.30 in) or 10 mm (0.39 in) per hour. Heavy rain — when the precipitation rate is > 7.6 mm (0.30 in) per hour, or between 10 mm (0.39 in) and 50 mm (2.0 in) per …
What is rate precipitation?
Precipitation rate means the amount of water in inches (P.R.) that an irrigation system discharges, usually measured in inches per hour. Precipitation rate means the rate at which water is applied per unit of time, usually measured in inches per hour.
How many GPM can a 4 drain handle?
1106.2 Size of Storm Drain Piping
| PIPE SIZE (inches) | CAPACITY (gpm) | |
|---|---|---|
| 3 | 87 | 111 |
| 4 | 180 | 231 |
| 5 | 311 | 331 |
| 6 | 538 | 689 |
How many gallons run off a roof?
The answer is about 623 gallons. To calculate the runoff from any given rainfall: Take the dimensions of the footprint of your roof and convert them to inches.
How many gallons in an inch of rain?
Divide the result by 231 cubic inches per gallon, and obtain the result of 17,378,743 gallons per square mile for an inch of rainfall.
How to convert cubic inches per hour to gallons per minute?
Technical units conversion tool for flow measures. Exchange reading in cubic inches per hour unit in3/hr into gallons US per minute unit gal/min as in an equivalent measurement result (two different units but the same identical physical total value, which is also equal to their proportional parts when divided or multiplied).
How to calculate rainfall in feet and inches?
Rainfall Convertions 1 1 in (inch) = 25.4 mm 2 1 gph = 0.0012 l/s 3 1 ft2 = 0.093 m2
Which is greater a cubic inch or a gallon?
One cubic inch per hour converted into gallon US per minute equals = 0.000072 gal/min 1 in 3 /hr = 0.000072 gal/min
Technical units conversion tool for flow measures. Exchange reading in cubic inches per hour unit in3/hr into gallons US per minute unit gal/min as in an equivalent measurement result (two different units but the same identical physical total value, which is also equal to their proportional parts when divided or multiplied).
How many liters are in one inch of rain?
One square yard is 1296 square inches. So “1 inch of rain” is 1296/231 or about 5 and a half US gallons or 21 liters of water per square yard. The flow rate through your drip system obviously depends on the area it is watering and how many hours it is on each day, but that gives you a starting point.
How to calculate the amount of precipitation per hour?
One of the multipliers in the upper half of the equation is the gallons per minute applied by the sprinklers. To convert this to gallons per hour we need to multiply by 60 minutes. To work this into the constant, we multiply 1.604 in x 60 min and we come up with the 96.3 for the formula.
Rainfall Convertions 1 1 in (inch) = 25.4 mm 2 1 gph = 0.0012 l/s 3 1 ft2 = 0.093 m2
