Home > How To > Foundations > Trouble-Free Foundations for Expansive Soils Foundations Posted on: November 01, 2002 Share on Facebook Share on Twitter Share on LinkedIn Trouble-Free Foundations for Expansive Soils Head off ugly and expensive foundation problems with caissons, counterforts, and cardboard void forms By David McMahon Download the PDF version of this article. (398.67 kB) About the Author David McMahon