Thought I would share this video with those of you north of the Gulf coast region of the country.
Down here we build houses flat on the ground, the clay/soil is just not stable. Digging footers isn't practicle. But when drought hits llike it has, no rain at my house in over 3 months, these foundation companies are all over the neighborhood. It can be avoided if you keep your foundation watered. The clay soil dries and shrinks, the local park looks like a dry lake bed, with cracks around 4ft deep.
http://www.youtube.com/watch?v=WEe3d...eature=related
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