My 1st post on this forum!!
I've been lurking and reading stuff on here for weeks, sorted out a plan and executed it.... I got the 52" deep pool filled to about 48" and started hearing popping noises, which turned out to be 4 of my concrete pavers that snapped directly under the legs
Here's my setup:
We brought in a dump truck load of the lime based dirt used for paver driveways. Built a frame on the ground to contain the dirt using landscape timbers. We removed 98% of the grass within the area (98% because there was still inevitably some left over).
Before filling the "Pad" with the dirt, I layed down plastic sheet to prevent grass from growing from anything missed and/or left behind.
We then spread out and leveled the dirt, and compacted it with a 300lb lawn/sod roller and a bit of water. Checked level, filled in where needed, and compacted the whole thing again. When dry, this dirt pad is almost as hard as concrete, and takes a pick-axe to break up if you need to.
After that week long process, we laid out the liner to locate where the legs would land, and then recessed concrete pavers to be level and for flush with the surface. We didn't use foam below the liner, but did use a large canvas tarp (old commercial awning) to protect against any sharp objects hidden in the dirt, then covered that with 2 plastic tarps. All of this extends over the pavers.
I paid careful attention to compacting the dirt under the pavers, and made sure there were no voids under themas well.
After all that, I started filling the pool. When I was at about 90% water level, I started pouring in the salt, and other chemicals recommended by the pool store based on my well water fill.
Got it to right about 48-49" water depth and turned off the well to give that pump a rest. Within 5 minutes of stopping the well pump, the pavers started to break. So far 4 of them near opposite corners.
Pavers are 16" square, 1.5" thick, plain concrete patio pavers.
So where did I go wrong? And is there a way to replace those 4 without draining the pool down? That's alot of water to drain, and a good chunk of money in chemicals to just dump out the drain.