The 3 things I learned when I had my foundation repaired that shocked me: push piers depend on house weight
https://www.scribd.com/document/1036194342/Thinking-of-Foundation-Repair-Near-Me-3-Things-to-Know-First-138581
The 3 things I learned when I had my foundation repaired that shocked me: push piers depend on house weight, light additions may need alternate systems, and brackets matter.