how to determine pool capacity

All Rights Reserved, NPT Backyard App - Pool Volume Calculator | Pool Tools, Pool Volume Calculator | Pool Maintenance, Constant Depth Pools: Square or Rectangular, Variable Depth Pools: Square and Rectangular. Calculating the capacity a pool or spa requires the volume and surface area of the pool or spa. Squared means multiplied by itself, so multiply the radius by itself. Length x width x average depth x 7.5 = volume (in gallons). Calculate the volume of the shallowÂ,  and add that to the volume you calculate for the deeperÂ, Make sure to use the actual water depth in your calculations, not the depth of the container.Â, Calculating the accurate volume is crucial, as itÂ, could mean serious errors when adding chemicals, which areÂ,  x radius squared x average depth = volume, The number 3.14, refers to pi, which is a mathematical constant. Most inground pools will be somewhere around 50 TDH. More complicated pool shapes will require multiple calculations and adding them together. Remember to measure from the depth of the water rather than the height of your wall. For accurate calculations, the pool should be divided into various areas according to the depth. This could mean serious errors when adding chemicals for example, which are administered based on the volume of water in question. If you’d like assistance in calculating for your pool volume, don’t hesitate to contact a swimming pool professional. a minimum space of 20 square feet per person in 5-foot water and 15 square feet in deeper water, subtract 300 square feet from the total area of the pool for each diving board. That is because the two liquids are not of equal density. Even so, before calculating the pool occupancy, deduct the surface area of the diving board from the total surface area . CIRCULAR WATER VOLUME FORMULA. Constant Depth Pools: Square or Rectangular, Length x width x average depth = volume (in meters cubed), Length x width x depth x 7.5 = volume (in gallons), Length times width gives the surface area of the pool. A simple method of calculating pool size is the use of geometric formulas. First: Determine the Average Depth (AD) of your pool with the following equation: Depth of Deep End + Depth of Shallow End ÷ 2 Total dynamic head is a resistance metric – it tells you the total amount of resistance in the hydraulic system of your pool. To calculate the volume of a rectangular swimming pool in gallons, start by measuring the length, width, and depth of your pool. Here is the pool volume formula: Length x Width x Average Depth x Multiplier = Volume in US Gallons. million parts of water, or 3 ppm. Capacity calculations involve calculating surface area and volume of the pool or spa. Brochures. There might be a time when you want to know the potential volume, if filled to the brim. Calculate volume in cubic feet. Multiplying that by the depth gives the volume in cubic meters. Â, If you’d like to find the pool volume in gallons, multiply your results by 7.5, as there are 7.5 gallons for each cubic foot.Â, Length x width x average depth x 7.5 = volume (in gallons)Â, Length times width gives the surface area of the pool. One part per million (ppm) represents 8.3 pounds of chemical per million gallons of water. Multiplying that by the average depth gives the volume in cubic feet. If the bottom is squared to the sides, one measurement is all you need. Multiplying that by the average depth gives the volume in cubicÂ, Measure the length, width, and average depth of the pool, rounding each measurement off to the nearestÂ, , and assuming the slope of the pool bottom is gradual and even, then the average depth isÂ, , you will have a different average depth. Unique pool shapes will require adding together multiple calculations. If most of the pool is only 3 or 4 feet and then a small area drops off suddenly to 10 feet, you will have a different average depth.