1:5:10:365 EcoTip Blog

March 16, 2008

:076 Expansive Soils

expansive-clay-soils-usgs.jpg  Credit: USGS

Suggested Review: See 1:5:10:365 EcoTips :075, 077, :078 for more information about expansive clay soils

Welcome to today’s 1:5:10:365 Tip for becoming a better steward for our home and planet.

1:5:10:076 Tip: Over half of the United States has areas with buildings constructed over varying amounts of expansive clay soils. These soils shrink and expand based on their moisture content. Early identification of the problem can help provide less expensive solutions. Expansive clay soils cause more damage each year than earthquakes and is typically not covered by insurance. 

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Additional Information

In my book Extreme Weather Hits Home, Protecting Your Buildings From Climate Change I discuss how warmer soil temperatures are resulting in less soil moisture and greater damage from expansive clay soils.

For maps of expansive clay soil regions in the United States, and more information about this problem, go to my book blog at http://jbanta.wordpress.com and click on your state.

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