1. ## Pool capacity

I'm not sure if this is the correct place to post this, but the math savvy probably hang around in here.

I'm over shooting a bit on my calculations and I think the pool size is wrong. Original owners say 36k. I figured 32500 or so.

I came across a diagram so I wonder if someone smarter than me could take a stab at it. Thanks!

2. ## Re: Pool capacity

Ack.. There is a little difference... at the deep end they added a curve... A Roman something or other. It goes about another 4 ft. My guess is it was added as an option to this base style.

3. ## Re: Pool capacity

I get something around 27,000 gallons, though I am not completely sure how to adjust for the "deep end they added a curve".

4. ## Re: Pool capacity

I think the deep end of the pool (short edge), they mean there is a circle arc making the deep end longer.

Like this:

5. ## Re: Pool capacity

I did some very quick math (40 in * 40 feet * 20 feet * 1.33 in gallons) and got 26.5 K gallons. I just treated it as a box ignoring the deep end, then added 33% more on for that. No way is it 36K.

6. ## Re: Pool capacity

It is 8 ft deep in the deep end but the strange thing is I measured 8.5 feet from water surface to bottom. Maybe with the Roman end they added a diving board and more depth. But yes the curve looks like the one posted.

7. ## Re: Pool capacity

Perhaps i can test with chlorine? Add 128 oz of 12.5 and measure the change? What's the earliest i can test after adding to get an accurate result

8. ## Re: Pool capacity

You can test after 30 minutes or so, but chlorine may not be a good indicator.

9. ## Re: Pool capacity

The most reliable approach is to track the expected vs actual change in levels across a number of different chemical additions, and continue adjusting your proposed volume to minimize the overall error across all of them. There is too much potential testing error in a single addition to get very good results.

10. ## Re: Pool capacity

I came up with 33,000

shallow end= 800
two slopes=2016
deep end= 1600
times 7.48 and we get 33,031

You would need a curve half the size of the shallow end to make it 36k.

11. ## Re: Pool capacity

Makes sense. So for now I should start by reducing my volume from 32 to 28 k for the calculator... given the initial results here?

12. ## Re: Pool capacity

Good plan. Then track how your actual results differ from your calculated results from there.

13. ## Re: Pool capacity

Originally Posted by dagoat1967
I came up with 33,000

shallow end= 800
two slopes=2016
deep end= 1600
times 7.48 and we get 33,031

You would need a curve half the size of the shallow end to make it 36k.
Must have crossed posts because I missed yours when I replied last. The curve doesn't seem to be half the size, but I'll take a pic and see what you think.

14. ## Re: Pool capacity

Here is a pic.

16. ## Re: Pool capacity

Thanks, that is useful.

#### Posting Permissions

• You may not post new threads
• You may not post replies
• You may not post attachments
• You may not edit your posts
•