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How do slab-on-ground foundations work?

April 26, 2017Foundations slab-on-ground

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How do slab-on-ground foundations work?

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The structural function of a slab-on-ground foundation is to act as a buffer that mitigates the differential distortions between the supporting soil and house supported on the foundation. Slab-on-ground foundations do this by resisting the moisture-induced distortion of the supporting soil and by spanning over moisture-induced distortions in the supporting soil. The foundation is intended to do this while maintaining the surface levelness within permissible levelness tolerances. The levelness tolerances are dependent on the as-constructed levelness of the foundation surface and construction of the house.