Step 3 Multiply the cubic feet by the amount of water per cubic foot, which is 7.48 gallons. 1. So to apply an inch of water to a 200 square foot garden would take 1,000 pints, or 125 gallons. 1 chain is 66 feet; 1 furlong is 660 feet; So 1 acre is 66*660 = 43560 square feet; 1 acre is thus 43560*144 = 6272640 square inches. 50 pounds per (square foot) to inch of water = 9.61108 inch of water. 3.To account for losses and inefficiency, you can expect to collect about 75% of the actual rainfall so your calculation should be multiplied by .75 Formula Length of roof _____ feet X width of roof _____ feet X.6gallons per square ft X … If that area gets a rainfall of one inch that would accumulate to 3630 cubic feet (ft³) of rainwater falling on this acre. 1 inch of water is the pressure exerted by a 1 inch high column of water at a given temperature . Also see Roof Online’s Roof Drainage page. The column exerts 0.433 pounds per square inch of pressure. Roof Online's Quick Reference Library - Click Here! 3 Inches of water = 0.25 Feet of water. 1 square inch = 0.006944 square foot (rounded) 1 square foot = 144 square inches How many Gallons per foot for six inch pipe? To switch the unit simply find the one you want on the page and click it. Inches of Water to Pounds per square foot formula. This should allow you to quickly and accurately estimate the weight of any amount of standing water on your low slope roof. (In this example, 600" x 240" x 1" = 144,000 cubic inches of water.) 1 Inches Of Water to Pounds Per Square Foot = 5.2022. That is equivalent to 0.623 gallons per sq ft. Multiply the roof dimensions by the number of inches of rainfall. One cubic inch of water weighs 0.036127 of a pound. One square yard requires 4.7 or roughly 5 gal­lons of water to be cov­ered 1 inch deep. One acre-foot of water (the amount of water covering 1 acre to a depth of 1 foot) equals 326,000 gallons or 43,560 cubic feet of water, and weighs 2.7 million pounds. It's 5 pints of water per square foot of garden space. Example: 1,000 square feet x .62 gallons = 620 gallons. To provide your lawn with one inch of water takes a little over half a gallon per square foot (0.623 gallon to be more exact). 1 acre is defined as one furlong times one chain (really!) 0.62 gallons of water are collected per square foot of roof per inch of precipitation. Rainfall calculator (English units) How much water falls during a storm? 2.Every square foot of roof space collects .6 gallons of water in a 1 inch rainfall. Rainfall amounts are usually measured in millimetres and inches. Capacity of a Round Cistern - Imperial measurements, Capacity of a Round Cistern - Metric measurements, Capacity of a Square or Rectangular Shaped Cistern - Imperial measurements, Capacity of a Square or Rectangular Shaped Cistern - Metric measurements, Collecting Rain Water from a Catchment Area/ Inch per Square Foot, Rainfall per Unit Area, Millimetres per Acre, Rainfall per Unit Area, Millimetres per Hectare, Measuring the Water Flow from a Tap in Gallons per Minute, Measuring the Water Flow from a Tap in Litres per Minute, Valves and Fittings 1/2" to 24" diameter, equivalent length calculation, Decimal Foot to Decimal Inch - Decimal Inch to Decimal Foot, Decimal Inch and Foot to Metres and Millimetres, irrigation run time the amount of time the system is running in hours, amount of water applied based on system run time in inches, the application rate in millimetres per hour, amount of water applied based on system run time in millimetres. Pound-force per square foot is a foot-pound-second (FPS) unit of pressure. Click here for our new Roofing Forum! Have a question? in H20 = psf * 0.19222 . (So, a 50' x 20' roof is 600" x 240".) One acre-foot of water (the amount of water covering 1 acre to a depth of 1 foot) equals 326,000 gallons or 43,560 cubic feet of water, and weighs 2.7 million pounds. There are 231 cubic inches in a gallon. Note: Inch of water is an imperial or United States customary unit of pressure. Unlike other calculators, you are NOT confined to inputting diameter in inches, velocity in miles per hour, etc. Convert from Pressure - Pounds per Square Inch (psi) to Head of Water in Feet (ft h2o) Convert from Head - Water Feet to Pressure in Pounds per Square Inch. So 8,000 gal. (So, a 50' x 20' roof is 600" x 240".) Using that rate, a 32 sq ft bed requires 20 gallons of water per week. per day would drain off about a half-inch of water from the area. square column of water nearly 28 inches or 2.31 feet high. That doesn’t sound like much until you consider that a 100’ x 100’ lawn uses 6,230 gallons of water every time you turn on the sprinklers! 70 Inches Of Water to Pounds Per Square Foot = 364.1531. Inches of Water to Pounds per square foot table. Inches of Water to Pounds per square foot formula. 1 psf is the pressure exterted by one pound-force of force being applied to an area of one square foot . This calculator will calculate the amount of water from a rainfall amount measured in inches per acre. 20 Inches of water = 1.6667 Feet of water. Multiply the roof dimensions by the number of inches of rainfall. One cubic inch of water weighs 0.036127 of a pound. 1 acre in of water = 27,000gal Cross multiply and we get 27,000gal = 1 acre inch X = .172 acres inch 27Kg x .172 = 1X 4644gal of water to get an inch of water for my front yard of 7492 Sq ft. At 3 gpm that would give me 1548 min. 10 Inches of water = 0.8333 Feet of water. Pounds per square foot to Inches of Water formula. Take the dimensions of the footprint of your roof and convert them to inches. Everything else has been calculated from that. The following table provides the weight of water per inch in pounds for various areas/square footages. Click Here. Somewhere on found a formula for precipitation rates to figure inches/hr for square spacing. Weight of Water per Inch per Square Foot in Pounds. Divide by 231 to get the number of gallons (because 1 gallon = 231 cubic inches). There are 4840 sq. For example, on a 2,000 square foot roof, you can collect 2,000 x 0.56 = 1,120 gallons/inch of rain. That means that every 10’x10’ area will require over 62 gallons of water. Although this calculation is simple in principle, the units can make it a headache. Divide by 231 to get the number of gallons (because 1 gallon = 231 cubic inches). A 6-inch pipe holds 1.47 gallons per foot of length. If your average rainfall was 25 inches/year, your annual collection potential is 1,120 x … How many pounds-force per square foot in 43 inches of water: If p inH2O = 43 then p psf = 5.20232932 × 43 = 223.70016076 psf. To calculate the total weight of snow, multiple the volume of snow in feet by the density in pounds per cubic foot. Let’s do it the hard way first. Use our metric-system version.. Contact one of our sales professionals now to get a competitive quote for any of your pipe needs. 2 Inches Of Water to Pounds Per Square Foot = 10.4044. It is the middle of July in Georgia and both you and your tomatoes are wilting in your yard, both looking to the sky and hoping for rain. = 1/2 gallon per hour drip emitter on 1 foot center Example: For vegetables in the summer, we recommend applying about 1 inch of water over the surface area of the garden bed per week. 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