The 3 things I learned when I had my foundation repaired that shocked me included: pier spacing is engineering
https://www.livebinders.com/b/3708923?tabid=57d8603a-4c95-9214-13a8-b3af67062548
The 3 things I learned when I had my foundation repaired that shocked me included: pier spacing is engineering, not guesswork, and fewer deep piers can beat many shallow ones.