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

https://martineire230.bearsfanteamshop.com/residential-foundation-repair-checklist-3-things-to-know-before-you-call-2

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.