The cracks to the outside wall were pretty visible at one time. The engineer that took a look at it said the epoxy should do the trick. But at that time i don't think any consideration was given as to weather the ringwall was damaged "under" the tank or weather or not the ringall damage put any...
I have read a few threads about ring walls and have a different question.
First off, I am not an engineer. I work at a small power plant and we have a 26' x 26' water storage tank that sit atop a 4' ring wall. I noticed water leaking around one side of the base of tank. The ringwall was damaged...