Unknown Pool Volume / Gallons

[hobbzilla]

Howdy! I am the proud owner of a pool of an unknown size! The former pool service said they were treating it as a 10,000 gallon pool, but that seemed low to me.

I took some measurements and google mapped birds-eye and wanted someone to double check my math and some of my guessing as I am breaking it up into round parts as it is a bit of a kidney shaped pool.

Sunbathing ledge is 9' across and has two levels. The first level is 6" and then 2' around just under half of the circle is a step-off ledge that is 18".
The next two sections are about the same size and 15' x 50" deep.
The "deep end" is about the same size of the two sides and is 60" deep.

They say a picture is worth a thousand words... (and I am already 10% there.. so I'll shut up and listen now!)

Thanks!

 

[DrewLG]

They say a picture is worth a thousand words

Your 16500-gallon calculation from the photos seems like a good starting guess, assuming that the measurements are correct. The sum of the cylindrical volumes is more than that, of course. But there's overlap, and the walls don't meet the floor at a right angle, so you did the right thing by rounding down.

To refine your estimate, you can use an app like PoolMath to predict the effects of adding chemicals to your pool, then measure the actual effect and adjust the estimated volume accordingly. Use a good test kit like a Taylor K-2006C or testkits.net TF-100, not imprecise test strips or pool-store testing, and adjust in small +/-500-gallon steps so one measurement or prediction error won't throw you way off. Repeat until the predicted effects match the actual effects.

 

[Mdragger88]

You can also try this calculator to compare, select oblong

Pool Volume Calculator

Check out Pentair's easy-to-use pool volume calculator to calculate the volume of your swimming pool water by choosing the shape, dimensions and depth.

www.pentair.com

 

[IceShadow]

Using your approximation and dialing it in by adjusting when chemical additions do more or less than expected is good enough for your needs.

But if you really NEED to know:

A Chemical Way of Calculating Pool Volume

There is a way to use pool water chemistry to calculate pool water volume without using the traditional geometric calculations. The geometric formulas are fine for pools that are traditionally shaped. However, when pools do not fall into these convenient shapes, a chemical method can be used...

www.troublefreepool.com