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Concrete Raised Area in Basement



Concrete slabs in basements are, by design, allowed to move should the soil beneath the slab swell or expand due to expansive clays that may be present in the soil. This can occur when the soils are moistened or become wet often caused by poor grading and drainage around the exterior of the home.

The first photo shows a vertical plumbing waste pipe, (center or photo next to the foundation wall).

The second photo shows where a rubber expansion joint has compressed confirming the concrete slab has raised or heaved upward. These types of movements should be monitored closely for further movement. Grading and drainage around the exterior of the home should be maintained so water is directed away from the home. Sump pits that contain water should have a sump pump installed and water discharged to the exterior a minimum of 5' away from the homes foundation.

 

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