The 3 things I learned when I had my foundation repaired that shocked me: clay heave can lift slabs, not just sink them

https://www.scribd.com/document/1035632336/3-Things-to-Know-Before-You-Encapsulate-Crawl-Space-and-Call-Foundations-Repair-Near-Me-179779

The 3 things I learned when I had my foundation repaired that shocked me: clay heave can lift slabs, not just sink them, and root moisture removal can trigger upward movement.