Nobody took the bait on that third picture with the shoring, so Iĺl spill the beans.
Note all the gravel and stuff on that new tank? That was the second time I set it. They decided to daylight that pipe so I did not have enough pea gravel, I ran at lunchtime to get more. Iḿ almost back and get this call, we floated the tank!
They had pumped down the tests on those 3 pipes, but clearly not enough. When they popped off the caps, the water ended up in the hole i had dug, and they were sciencing now
I get parked and there sits that tank, all askew floating in the pea gravel at a 30 degree slant. OK that sucks. Then I hear the story and it s a gut buster. The plumber is standing on the tank, supervising his guys, and it slowly starts floating up. My main helper is watching and the plumber is clueless as to what is happening. Once it started to go, it came up at that 30 degree angle and he is surfing the tank going "WTF is happening?¨
That was a missed Kodak moment if ever there was one
We talk about floating tanks, caution people about filling them, etc, and then they get a lesson not soon forgotten.