The 3 things I learned when I had my foundation repaired that shocked me were: helical piers can be installed in tight

https://medium.com/@lyndanwnum/homeowner-guide-3-things-to-know-before-calling-for-foundation-repairs-27b771fe8979

The 3 things I learned when I had my foundation repaired that shocked me were: helical piers can be installed in tight yards, torque logs prove capacity, and depth often exceeds estimates.