We built our in ground gunite pool 11 years ago. There were a number of design iterations, and I recall the size started out at 15,000 gallons (a stock design for this company) but as the county messed with our site plan, I recall seeing a piece of paper that showed the modifications reduced the size to 13,000 gallons.
Unfortunately, the only paper I've retained over the years all shows the 15,000 gallons so I am wondering if my memory is just incorrect. The pool is curvilinear with no straight sides anywhere so its not just a matter of calculating a volume from length, width, and depth.
Here's the question: if I can't settle this, what number should I use in calculating amounts of chemicals to add, or assessing the outcomes of tests? 15K, 13K, or pehaps the "happy middle" 14K?