Concrete GPR Scan using Ground Penetrating Radar

GPR Scanning Services, LLC was contracted to perform a concrete gpr scan using ground penetrating radar in a condo building in West Palm Beach, Florida. The project consisted of gpr scanning several areas prior to the customer penetrating the slab to move existing water and sewer lines. The concrete slab was approximately 10 inches thick and contained post tension cables, reinforcing steel and conduits. Only one side of the concrete could be accessed due to homeowners living below the scan area. Gpr scanning is the only method which can be completed with access to only one side of the concrete. X-ray service requires access to both sides of the concrete, limiting its use. The concrete gpr scanning is completed by pushing the antenna which is attached to a hand cart across the concrete in a grid pattern. The gpr radar data is processed by a computer unit and interpreted immediately by the technician. The technician was then able to locate and mark the location of the anomalies directly on the surface. The results were marked using a black marker for rebar and a red marker for pt cables or conduits. Based on the findings, the customer could determine where to place the new lines without damaging pt cables or conduits resulting in costly repairs. The technician used a 1600MHz gpr antenna manufactured in the United States. This concrete antenna is capable of scanning concrete up to 15″ thick. A variety of anomalies can be located with the radar antenna including rebar, post tension cables, conduits, and voids. It can also measure slab thickness along with depth and spacing of the reinforcing steel. Ground penetrating radar also allows for scanning of slab on grade concrete prior to saw cutting to locate shallow conduits that may be embedded in the concrete or directly below. Please call us today to schedule your next concrete scanning project, we offer hourly pricing with flexible scheduling.