Subsurface voids can include issues such as washouts or settlement gaps beneath roadways or floor slabs, un-grouted masonry cells, bubbles in concrete pours, tunnels, mine workings, vaults, natural limestone (karst) caves or solution cavities, and incipient sinkholes or soil pipes.
Sterling Geophysical Surveys are able to detect and delineate voids using non-intrusive geophysical techniques.
Subsurface voids can include issues such as washouts or settlement gaps beneath roadways or floor slabs, un-grouted masonry cells, bubbles in concrete pours, tunnels, mine workings, vaults, natural limestone (karst) caves or solution cavities, and incipient sinkholes or soil pipes.