Post-Tension Foundations in Texas Clay: What They Don’t Solve

A construction worker in an orange safety vest stands in front of a cracked post-tension concrete slab showing exposed steel tendons and expansive clay soil.

Post-tension slabs are standard across Texas. But they do not solve the root problem. In high-plasticity clay soils, movement starts below the slab — not in the concrete. The real question is whether your foundation is resisting movement or preventing it. This field report breaks down why post-tension alone does not stop soil movement — […]