Definition
Expansive clay soil expands when wet and contracts when dry, causing significant foundation movement and damage. It requires special foundation design and moisture control.
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Find my pathAbout this term
Expansive soil is common in certain regions and causes significant foundation damage. Expansive soil problems can be managed but require special foundation design. Expansive soil identification requires soil testing. Damage remediation is expensive.
Pro Tip
In expansive soil regions, require geotechnical testing and proper design.
Example
A home built on expansive clay with foundation cracks and settlement from soil movement.