Both display a number of rebar and post-tension cables. This is because they drape from one end to another, and do not lie in a straight line. In the examples above, definite P.T. cables are circled in red. Other suspicious P.T. cables can be identified with a few more scan profiles. Over A Support Column and Displaying Rebar and Post-Tension Cables Data represents approximately 30' cross section.
Shallower targets are primarily post-tension steel and conduit.
Also note the location of the support column below the slab which is indicated by the red lines. This StructureScan 3-D profile was collected in a parking garage deck. The profile identifies rebar and cables. This StructureScan 3-D profile was collected at the same location, in the transverse direction. The outlined area is the foundation of a lamp post.