A survey of 446 brick-veneer, single-family homes in College Station, Beaumont, San Antonio, and Waco, Texas, shows that the geology of the home site greatly influences the expansive potential of a soil profile. Effective plasticity index is used as a measure of a soil's shrink-swell potential; however in College Station the geological conditions provided subsurface wetting fronts which greatly
... [Show full abstract] enhanced the shrink-swell activity at low values of effective plasticity index. In Beaumont, San Antonio, and Waco, the depth of the active zone is important in controlling the expansive potential of the soil profile. -from Authors