The 3 things I learned when I had my foundation repaired that shocked me included: pier spacing is engineering
https://sergiodkke242.rivetgarden.com/posts/5-hints-you-required-a-foundation-repair-expert-near-me
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.