What is the formula for calculating the vloume of a round pool?

Answer 1

Length X Width X Average Depth will give you the cubic foot capacity of the pool. Than take that number and multiply by 7.48 (gallons of water per cubic foot)

Example a 20 x 40 pool that is 3' in the shallow end and 8' in the deep end would calculate like this:

20x40=800

3'+8'=11' / 2 = 5.5' average depth

800 x 5.5 x 7.48 = 32912 gallons

7.48 is close enough to correct, but only works on constant dimension pools. You will get equally valid answer just using 7.5 for rectangular pools, or to allow for curved walls, use 5.9 instead of 7.5 or 7.48 if figuring for a round or oval shaped pool.

Answer 2

If you're lucky, then your pool is rectangular and equally deep everywhere. In that case, take a long ruler and measure the length and the width. Stick the ruler in the water until it touches the bottom, and use that to measure the depth. Multiply the three numbers together and you'll get the volume. Unfortunately, you'll get the number in cubic feet or cubic meters, and you probably want it in liters or gallons. How to convert: Cubic meters to liters: multiply by 1000. Cubic meters to gallons: multiply by 264. Cubic feet to liters: multiply by 28. Cubic feet to gallons: multiply by 7.5. If you're not so lucky, your pool is deeper in some places than in others. Hopefully, the bottom is at least flat: if it is, then measure the depth at two opposite corners and average - do everything else as in the other case.

Answer 3

You measure the dimensions of the pool using some measurement units (feet, yards, metres). Then, using geometry, you would need to calculate the volume of the pool in some appropriate units (cubic feet, cubic yards, cubic metres). these measures can then be converted to gallons using standard conversion factors. However, you need to be careful whether you want US gallons or Imperial gallons since these are not the same - one more reason why the "customary" system of measurement is rubbish and near obsolete.

Answer 4

Expressing the volume of the balance tank in function of the volume or the surface of your pool is nonsens.

The volume of the balance tank is the sum of:

1. The maximum number of people that will be in your pool at a certain time. Take 0.08m3 per person x nbr. of swimmers at the same time.

2. The water that is in the canal around the pool in function.

3. The water volume needed to clean (backflush) a sand filter or a similar type of filter. This can be a lot of volume. If you use a cartridge filter, which filters out much smaller particles and therefor keeps your pool cleaner, then you don't need to backflush o this volume is in (3) is not applicable.

4. A minimum volume in the bottom of the tank in a smaller part of the tank above the outlet.

If your pool is residential and you don't expect more than 20 people in your pool at the same time than that is 20x0.08m3= 1.6m3. So a tank of 4m3 will do nicely for any size of pool.

Answer 5

Length times width times depth will give you the volume. If you want to know how much water it will hold, take your cubic feet and divide it by 7.48051935474856

Answer 6

If the pool is cubic (square)

Volume = length*width*depth

If the pool is circular

Volume = pi*radius2*depth

Answer 7

Previous pool size answers http://wiki.answers.com/Q/How_much_water_will_an_18_foot_pool_by_4_feet_deep_hold

Answer 8

Multiply the length buy the width by the depth. OR read the water meter before and after you fill it with water and subtract the two for the volume.

Answer 9

Length x width x height