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Upland, CA 91786

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Applications FAQ


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Aside from the normal, post-tensioned foundations are uniquely suitable for where unusual and/or potentially dynamic soil conditions exist.  This is because of their ability to distribute loads over a wide area as well as enabling the whole foundation to react to an isolated event occurring in any one section.

What is the minimum safe soil bearing value for a post-tensioned slab?

Generally 500 psf is considered the minimum.

Where are post-tensioned foundations mostly applied?

Over highly expansive silts and clays.

Are they effective for use in areas prone to settlement?

To a point.  They have successfully prevented significant superstructure damage from settlement in many hillside locations as well as over reclaimed wetlands.  Being soil supported however, they can be expected to settle with the building pad should it tilt or subside.




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