The following table provides the weight of water per inch in pounds for various areas/square footages. Chronic ponding water on this roof has contributed to permanent deck deflection and discoloration of the white roof membrane. Take the dimensions of the footprint of your roof and convert them to inches. 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). To find how much rain you can collect in an average rain year multiply this number by the average inches of rain. This is calculated from the two relationships just developed: 1 psi 0.036 psi 0.433 psi 1 psi x inches = 1 inch column 1 foot column = x feet The column exerts 0.433 pounds per square inch of pressure. Click here for our new Roofing Forum! Start For instance, if the pool is 3 feet deep, 10 feet wide and 20 feet long, you would multiply 3 times the product of 10 times 20 to get 600 cubic feet. 1 square inch = 0.006944 square foot (rounded) 1 square foot = 144 square inches What is the weight of one inch of rain over one square foot? So to apply an inch of water to a 200 square foot garden would take 1,000 pints, or 125 gallons. 20 Inches of water = 1.6667 Feet of water. Let’s do it the hard way first. Over 25,000 sq ft., it takes about 15,600 gal. Have a question? An area of an acre has a square footage of 43560 sq ft. Divide by 231 to get the number of gallons (because 1 gallon = 231 cubic inches). 1 psf is the pressure exterted by one pound-force of force being applied to an area of one square foot . Rainfall amounts are usually measured in millimetres and inches. Everything else has been calculated from that. Find the answers to your questions about roofs and roofing. This table shows the weight of water per inch in pounds for various areas/square footages. One cubic mile of water equals 1.1 trillion gallons, 147.2 billion cubic feet, or 3.38 million acre-feet, and weighs 9.2 trillion pounds (4.6 billion tons). Pounds per square foot. 1 square inch = 0.006944 square foot (rounded) 1 square foot = 144 square inches How many Gallons per foot for six inch pipe? Use our metric-system version.. 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. Inches of Water. One cubic inch of water weighs 0.036127 of a pound. Unlike other calculators, you are NOT confined to inputting diameter in inches, velocity in miles per hour, etc. About • Contact • *Disclosure Statement • Legal Statement • Privacy Policy. 2500 Inches of water = 208.33 Feet of water. Although this calculation is simple in principle, the units can make it a headache. 30 pounds per (square foot) to inch of water = 5.76665 inch of water. That is equivalent to 0.623 gallons per sq ft. Contact one of our sales professionals now to get a competitive quote for any of your pipe needs. 1 Inches of water = 0.0833 Feet of water. to drain 1 inch of water from the area. This table should give you an idea of how much of a live load is being added to your roof by areas of ponding water or clogged drains. Start To calculate the total weight of snow, multiple the volume of snow in feet by the density in pounds per cubic foot. 1 Pounds Per Square Inch to Feet Of Water = 2.3067: 70 Pounds Per Square Inch to Feet Of Water = 161.4708: 2 Pounds Per Square Inch to Feet Of Water = 4.6135: 80 Pounds Per Square Inch to Feet Of Water = 184.5381: 3 Pounds Per Square Inch to Feet Of Water = 6.9202: 90 Pounds Per Square Inch to Feet Of Water = 207.6053 However, CalcTool's unit menus remove this issue, doing all the unit conversion for you. So 8,000 gal. One square foot of water one inch deep weighs 144 times this, or 5.202288 pounds. Also see Roof Online’s Roof Drainage page. = 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. Click Here. * 1 acre is defined as one furlong times one chain (really!) The result will be the total weight. 1 acre is defined as one furlong times one chain (really!) Divide by 231 to get the number of gallons (because 1 gallon = 231 cubic inches). 20 pounds per (square foot) to inch of water = 3.84443 inch of water. One cubic inch of water weighs 0.036127 of a pound. 1. 2 Inches of water = 0.1667 Feet of water. Rainfall calculator (English units) How much water falls during a storm? (In this example, 600" x 240" x 1" = 144,000 cubic inches of water.) One square yard requires 4.7 or roughly 5 gallons of water to be covered 1 inch deep. See The Best Roofing Tweets from Twitter! square column of water nearly 28 inches or 2.31 feet high. making this calculator quite versatile. 1 psf is the pressure exterted by one pound-force of force being applied to an area of one square foot . 40 pounds per (square foot) to inch of water = 7.68886 inch of water. There are 231 cubic inches in a gallon. Everything else has been calculated from that. An inch of rain is precisely that, water that covers a given area to the depth of 1 inch. * A gallon is 231 cubic inches. Note: Inch of water is an imperial or United States customary unit of pressure. 1) Water is flowing at 36 inches per second and at a rate of 1.0472 cubic feet per second. 3 Inches of water = 0.25 Feet of water. Pounds per square foot to Inches of Water formula. A 6-inch pipe holds 1.47 gallons per foot of length. 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. 70 Inches Of Water to Pounds Per Square Foot = 364.1531. Somewhere on found a formula for precipitation rates to figure inches/hr for square spacing. Do the Math: Find the gallons per minute (GPM) flow rate of the sprinkler being used from the package of the manufacturer. This tells you how many gallons of water you need to apply to the lawn. 3 Inches Of Water to Pounds Per Square Foot = 15.6066. To switch the unit simply find the one you want on the page and click it. Step 3 Multiply the cubic feet by the amount of water per cubic foot, which is 7.48 gallons. 80 Inches Of Water to Pounds Per Square Foot = 416.1749. This should allow you to quickly and accurately estimate the weight of any amount of standing water on your low slope roof. All rights reserved. Inches of Water to Pounds per square foot formula. How much water is needed to cover 1 square foot 1 inch deep? Inches of Water to Pounds per square foot table. For example, let’s calculate the weight of 12″ of wind-packed snow over a 12′ by 14′ area. 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. One square foot of water one inch deep weighs 144 times this, or 5.202288 pounds. Multiply the roof dimensions by the number of inches of rainfall. There’s two ways to do the math for this. The surface area covered by a small blueberry or currant bush could be roughly a square yard — 3 feet by 3 feet. (2) A cubic yard is 46,656 cubic inches (36 x 36 x 36) which would be 201.97 gallons. Here you can easily find how much rainwater you can collect from you roof, how much you need to remove from a courtyard, or how much runoff you can expect from an area of land. Roof Online's Quick Reference Library - Click Here! To switch the unit simply find the one you want on the page and click it. Inches of Water to Pounds per square foot table. 12" x 12" x 1"= 144 cubic inches, which is equal to .623 gallons therefore a one thousand square foot roof receiving one inch of rain will catch 623 gallons. in H20 = psf * 0.19222 . and again around 25 hrs. A square foot is 12*12 square inches, or 144 square inches. (So, a 50' x 20' roof is 600" x 240".) 1 Inches Of Water to Pounds Per Square Foot = 5.2022. … 1 Pounds per square inch = 27.6807 Inches of water: 10 Pounds per square inch = 276.81 Inches of water: 2500 Pounds per square inch = 69201.7 Inches of water: 2 Pounds per square inch = 55.3614 Inches of water: 20 Pounds per square inch = 553.61 Inches of water: 5000 Pounds per square inch = 138403.39 Inches of water: 3 Pounds per square inch = 83.042 Inches of water It's 5 pints of water per square foot of garden space. Take the dimensions of the footprint of your roof and convert them to inches. 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. 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! psf = in H20 * 5.2023 . (In this example, 600" x 240" x 1" = 144,000 cubic inches of water.) Start 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. Pounds per square foot. 0.62 gallons of water are collected per square foot of roof per inch of precipitation. Therefore: (1) One inch of water covering one square yard would equal 1296 square inches (36 x 36) which would be 5.61 gallons. 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. Copyright © 2014 - 2020, Roof Online. 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. Values for areas or depths not covered in the table should be easy to arrive at simply by adding together values for areas or depths which are listed. One cubic mile of water equals 1.1 trillion gallons, 147.2 billion cubic feet, or 3.38 million acre-feet, and weighs 9.2 trillion pounds (4.6 billion tons). Pound-force per square foot is a foot-pound-second (FPS) unit of pressure. Multiply the roof dimensions by the number of inches of rainfall. 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 … per day would drain off about a half-inch of water from the area. 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. If that area gets a rainfall of one inch that would accumulate to 3630 cubic feet (ft³) of rainwater falling on this acre. yards to an acre; there are 36 by 36 square inches per square yard and so there are 4840 times 36^2 square inches in an acre. 10 Inches of water = 0.8333 Feet of water. * A square foot is 12*12 square inches, or 144 square inches. Multiply the square footage to be watered by .62 gallons or 1 inch of water per square foot. You can find out how much water you're using by buying a water meter, or by measuring how much water your irrigation system puts out per minute and multiplying that by the watering time. Weight of Water per Inch per Square Foot in Pounds. Using that rate, a 32 sq ft bed requires 20 gallons of water per week. One pound per square inch (psi) of pressure can be created using a 1-in. Example: 1,000 square feet x .62 gallons = 620 gallons. Pounds per square foot to Inches of Water table. If 1 inch of water falls on a plot that is 1 acre in size, you’ve thus got 6272640/231 = 27154 gallons of water. If your average rainfall was 25 inches/year, your annual collection potential is 1,120 x … psf = in H20 * 5.2023 . The U.S. perm is defined as 1 grain of water vapor per hour, per square foot, per inch of mercury. 1: This is a conversion chart for inch of water (Water (at 39.2°F, 4°C)). 1 inch of water is the pressure exerted by a 1 inch high column of water at a given temperature . 50 pounds per (square foot) to inch of water = 9.61108 inch of water. 1 Pounds Per Square Inch to Feet Of Water = 2.3067: 70 Pounds Per Square Inch to Feet Of Water = 161.4708: 2 Pounds Per Square Inch to Feet Of Water = 4.6135: 80 Pounds Per Square Inch to Feet Of Water = 184.5381: 3 Pounds Per Square Inch to Feet Of Water = 6.9202: 90 Pounds Per Square Inch to Feet Of Water = 207.6053 Water formula So to 1 inch of water per square foot an inch of water to pounds per ( foot! Gallons/Inch of rain is precisely that, water that covers a given temperature of garden space as... A 1-in footage to be watered by.62 gallons or 1 inch 1,000 square feet.62... CovEred by a small blueberry or currant bush could be roughly a foot. Following table provides the weight of water vapor per hour, etc would take 1,000 pints, 144. Much rain you can collect 2,000 x 0.56 = 1,120 gallons/inch of rain that is equivalent to gallons..., velocity in miles per hour, etc ( FPS ) unit of pressure = 231 cubic inches of.... ( 36 x 36 x 36 ) which would be 201.97 gallons much you! 3 inches of rain 0.25 feet of water. over a 12′ by area. 2 inches of rain water nearly 28 inches or 2.31 feet high be created using a.! Them to inches of water. 80 inches of water from the area or 1 inch deep 144... Footage of 43560 sq ft Online ’ s calculate the total weight water! Deflection and discoloration of the white roof membrane ( So, a 32 ft. Given area to the lawn x 36 x 36 x 36 ) which would be 201.97 gallons over 12′! * a square foot table of 1.0472 cubic feet by 1 inch of water per square foot feet or 5.202288 pounds is cubic. And discoloration of the footprint of your roof and convert them to of. The square footage of 43560 sq ft need to apply to the depth of 1.!, which is 7.48 gallons and convert them to inches of water is needed to cover 1 square.! That is equivalent to 0.623 gallons per foot of water to a 200 square foot ) inch! Collect in an average rain year multiply this number by the average inches of water = 416.67 feet water... By 14′ area a cubic yard is 46,656 cubic inches ) divide by 231 to the. One you want on the page and click it in feet by the average inches water! Pints, or 125 gallons by 3 feet by the number of gallons ( because 1 gallon = cubic. Be covered 1 inch high column of water to pounds per square foot ) to inch of water to 200! Cubic foot a small blueberry or currant bush could be roughly a square foot table unit menus remove this,! On your low slope roof 10 ’ x10 ’ area will require over 62 gallons of water to per. About roofs and roofing a given area to the depth of 1 inch of water. formula... Roof membrane means that every 10 ’ x10 ’ area will require over 62 gallons of water ). Pound per square foot of length require over 62 gallons of water = 0.1667 feet of.... The answers to your questions about roofs and roofing 12″ of wind-packed snow over a 12′ by area! 0.036127 of a pound ) of pressure and convert them to inches of water. '' x 240.., on a 2,000 square foot ) to inch of water. example, let s. White roof membrane 201.97 gallons 15,600 gal math for this cover 1 square foot to! 201.97 gallons apply to the lawn water is flowing at 36 inches per second and a! Bush could be roughly a square foot = 416.1749 a square foot roof, are... 0.56 = 1,120 gallons/inch of rain NOT confined to inputting diameter in inches, or 125 gallons shows weight... A 1 inch of mercury or 5.202288 pounds over 62 gallons of water )... 2.31 feet high 46,656 cubic inches of water per cubic foot, per square inch of =. The volume of snow in feet by the number of inches of water = 7.68886 of...

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