Commitment to Safety • Reliable Results
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Penhall Technologies can help you locate rebar, pipes, post and pre tension cables, conduits and many other subsurface hazards that may be hidden in concrete. Our expertly trained analysts can also detect voids within or underneath concrete slabs. As a safety leader in the industry, contractors, engineers, and government agencies have come to trust Penhall first for safe and precise scanning services.
Before core drilling to install new plumbing and electrical lines, Penhall performs concrete scanning and prevents the damage of some critical conduits
A large contracting firm recently contacted Penhall for concrete scanning before core drilling holes in the floor for new plumbing and electric lines. These new lines would feed from the sixth floor down to the first, and the client had concerns about striking hazards in the process. The image to the left illustrates one of the scanned areas where a bundle of electrical conduits ran straight through the area that the client wanted to drill. By scanning first, costly damagers and possible injury were avoided.
Find rebar and post tension cables with concrete scanning
Drilling into a floor can be a dangerous task. For this reason, a client in Henderson, NC contacted us to do concrete scanning to detect any obstructions, such as post tension cable or rebar. We scanned a 12” x 12” area so that two 4” cores could be safely drilled.
GPR scanning on concrete wall to detect hazards before cutting
Penhall used ground penetrating radar for many areas at a single location in Durham, NC. Overall, we did concrete scanning for 20-30 areas of a concrete wall above 7′ to locate any underlying hazards.
Locate rebar and post tension cable to safely remove hotel balcony
Penhall Technologies was hired to GPR concrete scan a balcony and hallway of a hotel to locate rebar and post tension cable. The contractor wanted to locate rebar and post tension cables in order for the cables to be exposed and re-tensioned in order for the balcony to be removed safely. We scanned 300 sq ft using the GSSI HR mini to locate multiple bundles of Post Tension cable and the contractor immediately exposed all the cables to confirm our markings.
Avoid rebar in concrete slab when drilling with GPR scanning
Penhall completed a request for GPR scanning in Semora, NC. The customer wanted to scan for rebar in a concrete slab. The slab was going to have a deep core drill measuring 12” x 24”.
Serving the Raleigh Community with GPR Concrete Scanning services
In September 2016, Penhall had the opportunity to complete concrete scanning for a general contractor at the downtown Raleigh bus station. Our client wished to install brackets on every floor of the parking garage elevator shaft, and had Penhall scan the wall and ceiling areas first to avoid hitting rebar and post tension cables. Having scanned before drilling into the concrete, the contractors can be assured that their project will progress in a safe and timely manner. We are fortunate to have worked on a project that will serve the Raleigh community for many years to come!
Identify rebar patterns on a concrete wall to ensure safety while core drilling
In December 2016, Penhall was called by a large engineering company to complete scanning and core drilling at the Orange County Water and Sewer Authority wastewater treatment facility in Carrboro, NC. This plant provides clean drinking water to the surrounding community, including the University of North Carolina at Chapel Hill, home of the North Carolina Tar Heels. The engineers needed three locations scanned and cored for their project, and we were happy to oblige. The image provided shows the rebar pattern on the wall of a water basin, which was located using the GSSI Mini HR scanner. Because the location was approximately 15 ft. high, we set up scaffolding to access the location safely. By detecting the rebar before coring at these three locations, the engineers were able to flawlessly move forward with their project in a timely manner.
Detect any live conduit and locate rebar in preparation for a hospital room remodel
Penhall Technologies was recently hired to perform concrete scanning services at a hospital in Fayetteville, NC. The contractor’s project involved the remodeling of a 400 square foot room, which included the removal of the existing floor. To play it safe, the contractor had Penhall detect any live conduits in the slab and mark out its rebar pattern. The GSSI Mini HR was used to scan this entire area and was accompanied by the RD 1700, which has the ability to detect any live power currents. By having all of these hazards marked out before cutting, the client will be able to continue their project in a safe and timely manner.