Non-Destructive Test (NDT) Non-Destructive Test (NDT) Non-Destructive Test (NDT) services: Locate metallic and non-metallic targets in walls, floors prior drilling, cutting, coring or use scanning information to determine pre-built location of future projects. Structure inspection – monuments, wall towers, tunnels, balconies, garages, decks• Measure slab thickness . Void detection and location. Inspection of other reinforced concrete structures. Easy identification of re-bar location and depth. Ability to obtain accurate overlay thickness. Determine accurate concrete cover depth. Define areas of deterioration.