How are structures constructed when the soils on site are high shrink-swell?
We construct footings in high shrink-swell soils by going deep enough that the footing bottom is below the “zone of significant moisture change”; note that even with this, you can still have a little change in moisture and this can result in some movement. Constructing slabs over high shrink-swell soils are more difficult. Options are either remove and replace the high shrink-swell soils to an appropriate depth with inert soils, or make sure the soils stay at a stable moisture content (i.e.