What a horrible situation. Maybe Cash will chime in. He is as knowledgeable about materials and construction as anyone I know.
BobMt is on it.
Bob is very smart (so I have gathered from his op-eds on a multitude of topics).
Pics, location, more specifics... and such would be tremendously helpful.
Settling foundations on improperly compacted soil... Oh Boy...
Reminds me of this tower over younder in Italy... small town called Pisa.