This is an office building in Charlotte, North Carolina. We were called because they thought there might be posttension cables / pretension cable in the slab on grade as is the case with many buildings located in Charlotte North Carolina. This is a cross-section from the electrical room that was slab on grade although we found no Post tension cables or Pre tension cables. We were able to prevent them from hitting two electrical conduits. Using GPR is a great way to locate and avoid issues before they become an expensive problem to fix.