Pool Size (Capacity) Estimation

[PoolDoc]

Method #1: Measure the volume exactly, when you next empty and fill, by reading your meter before and after, and the deducting average water use during the period.

Method #2: 'Grid' the pool, by laying out a rectangle to enclose the pool. The sides should be divisible by 3. Use stakes or tent pegs to layout nylon lines, 3 long wise, and 3 cross wise, and count the 'squares. Count each section as 0, 1/2 or 1. Measure the depth in each 1/2 or 1 square. Leap frog the lines, to create the new squares. Calculate the volume of each square (9 sft x depth or 4.5 sft x depth). Sum the volumes.

It will be easier if you use graph paper to track your work. This should be within 20% of actual volume.

Method #3: Add 5 lbs exactly of calcium chloride dihydrate. Measure the change in hardness using the K2006. Calculate to the volume. Probably accurate to 25%.

Method #4. Layout a bounding rectangle or trapezoid that fully -- but barely -- encloses the pool. Layout the largest enclosed trapezoid that will fit IN the pool. Estimate the average depth. Calculate the volume of each solid (large trapezoid sft x depth; small trapezoid x depth) and estimate the pool's volume as in between the two. Probably accurate to 50%.