Inground Pool Liner Measuring Tips
Tools You Will Need: Some of the areas that need to be measured are not easily accessed. To measure these, you will need to use the plumb bob, string, skimmer pole and tape measure.
Step 1. Let's say you want to measure the distance from the edge of the hopper to one of the side walls of the pool. At the end of your skimmer pole is a hole that "locks" the skimming net in place. Remove the net and feed the string of the plum bob through the hole. Lay the pool pole on the pool deck at the deep end and keep extending it out, perpendicular to the end of the pool as shown in the diagram below. (If your pole isn't long enough, it can be lengthened by inserting a broom handle in one or both ends.) When the plumb bob is at the intersecting point where the floor and the wall meet, place a pencil mark on the skimmer pole right at the edge of the coping. Place the pole on the deck and measure from the pencil mark to the string hole at the end of the pole. This is the distance you were looking for!
Step 2. To measure the depth in an inaccessible area of the pool, you will need your pole set-up again. Lay the pool pole on the pool deck. Extend it out, (even with the pool deck) until the plum bob is just touching the bottom. Make a mental note as to where the string is entering the water and remove the pole to the deck. Measure the string (from where it entered the water) to the end of the plum bob as shown in "A" in the diagram below. Now measure from the water surface up to the liner track. Add the 2 numbers together and this gives you the actual depth of the pool in that location.
Step 3. There are three types of transitions that you could encounter in measuring the height of your pools shallow end walls. If the pool wall and floor meet in a 90 degree angle you will measure from the liner track to the pool floor in two or three locations. If the transition from the wall to the floor is a 45 degree angle you will measure from the liner track to the top of the 45 degree angle. Finally, if your pool wall and floor meet in a radius you will measure from the liner track to the top of the radius. Remember that when measuring you should be sure to measure in multiple places so you will have an accurate measurement.