The map above is based upon "Swelling Clays Map of the Conterminous United States" by W. Olive, A. Chleborad, C. Frahme, J. Shlocker, R. Schneider and R. Schuster. It was published …

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Expansive clay, also called expansive soil, is a clay soil prone to large volume changes (swelling and shrinking) directly related to changes in water content. [1] Soils with a high content of …

Expansive Soils Map. The map on this page shows the generalized geographic distribution of soils that are known to have expandable clay minerals which can cause damage to …

Check out the Swelling clays map of the conterminous United States. Map published by the U.S. Geological Survey

Innocuous as it sounds, Colorado’s most significant geologic hazard is expansive or swelling soil — that is, soil laced with layers of various clays. These clays cause more property damage …

These areas are underlain by soils with little to no clays with swelling potential. Data insufficient to indicate the clay content or the swelling potential of soils. The map above is based upon …

The map below shows the geographic distribution of soils which are known to have expandable clay minerals which can cause damage to foundations and structures.

The capacity of a soil to shrink and swell is related to the clay minerals present, particularly montmorillonite, which can swell up to fifteen times its dry volume and generate pressures in …

The resultant map shows areas susceptible to shrink–swell, with the potential for soil-volume change subdivided into very high, high, medium, low or nil. GeoSure shrink–swell hazard …