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.

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What are we scanning? Slab on grade, suspended slab, etc.

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Raleigh Concrete Scanning Projects that Penhall Worked On

Identify hazards in the concrete prior to drilling

A plumbing company hired Penhall for concrete scanning. They wanted all rebar and post tension cable located and marked out in an apartment building. They needed to safely identify and subsurface structural components in twenty different bathrooms prior to drilling holes so they could put in shower drains. Using the GSSI Mini, our analyst found and marked wire mesh, PT cable, and rebar.

Drill concrete safely after scanning concrete

Raleigh concrete scanningPenhall Technologies was hired for concrete scanning. The job consisted of locating rebar in 3 areas in an exterior wall by using GPR. The purpose of the scanning was so the client could safely drill and extract samples to determine the concrete integrity. The analyst used the GSSI StructureScan Mini HR. She was able to successfully locate the rebar in the concrete wall. The analyst marked out the rebar within the 2’X2’ areas. Now, the customer had the tools to locate an appropriate and safe spot to drill each of the holes.

Penhall performs concrete scanning and prevents the damage of some critical conduits

concrete scanning to help prevent damage to electrical linesA 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. So the client had concerns about striking hazards in the process. The image to the left illustrates one of the scanned areas. Here, a bundle of electrical conduits ran straight through the area that the client wanted to drill. By scanning first, the client avoided possible costly damages and injury.

Find rebar and post tension cables with concrete scanning

Finding rebar and locating post tension cables with concrete scanningDrilling into a floor can be a dangerous task. For this reason, a client in Henderson, NC contacted us to do concrete scanning. He wanted to detect any obstructions, such as post tension cable or rebar. We scanned a 12” x 12” area so that the client could drill two 4” cores safely.

GPR scanning on concrete wall to detect hazards before cutting

concrete wall scanning to detect hazards within slab before cuttingPenhall 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

Locate rebar and post tension cables before demolitionPenhall Technologies was hired to GPR concrete scan a balcony and hallway of a hotel to locate rebar and post tension cable. In order to remove the balcony safely, the contractor wanted to locate rebar and post tension cables to expose the cables and re-tensioned. 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

scanning before drilling to avoid rebar in concrete slabPenhall 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

Concrete scanning for raleigh north carolinaIn 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 are sure 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

identify rebar patterns on concrete wall 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 the analyst located with 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.