Post-tension cables are used during concrete construction to allow for thinner slabs and to span greater lengths between support columns. These cables are made of steel wires that are inserted within a plastic sheath and are tensioned and grouted after the concrete itself is poured. These cables are typically 3/8” or ½” in diameter and are encased in a plastic sleeve.
This type of cable is great because it allows for interactive viewing of depth slices as well as helps with grid imaging. This real-time depth imaging is essentially during site evaluations.