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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I can confirm this is a private locate. For all public locates please contact 811.

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To better help you with your request, could you kindly provide the following information:

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

What are we scanning for? Ex. rebar, tension cables, conduits, etc.

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What is the surface that we are performing the locate on? Ex. Ground/Dirt, asphalt, concrete, indoor/outdoor, etc.

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What are we locating? Water, gas, electrical, sewer, etc.

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Do we have access to meters or utility boxes?

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Once you submit this form, a Penhall Company representative will contact you within 24 hours. Thank you for the opportunity to earn your business!


Penhall locates tension cables to enable the safety of drilling anchors to bolt down a large piece of fitness equipment to the floor

scan slab before anchoring bolts to the floorAs construction reached the final stages of completion at a new apartment complex, there was one project still remaining, the gym. The customer needed to bolt down a large piece of fitness equipment into the floor without hitting any of the post-tensioned (PT) cables in the slab. The equipment had 3 plates that needed to be secured with 4 bolts on each plate (12 bolts total). Since the carpet had already been installed, tape was used to mark the PT cables. If Penhall Technologies had not been called to scan before drilling started, 2 of the plates would have been centered directly over PT cables, making for a dangerous situation. With the PT cables marked out, the customer was able to easily rearrange the gym layout and safely secure the equipment. Allow Penhall Technologies to keep your project on budget, on time, and most importantly- safe!

Penhall Technologies ensures safety with concrete scanning before installing bollards at Hartsfield-Jackson International Airport

concrete scanning before installing bollards As Hartsfield-Jackson Atlanta International Airport continues its renovation, preventative safety measures are being taken to keep pedestrians safe from the surrounding construction. On the 4th level of the North Terminal parking garage, the existing pre-cast wall along the southern side will be soon taken down, leaving an open edge. While a metal fence has already been erected, to ensure added protection, bollards were also installed. Before the installation occurred, Penhall Technologies was asked to scan every five feet along the perimeter of the fence to identify any and all hazards in the slab including rebar, electrical conduit and underlying structural beams. All in all, 38 locations were scanned using the GSSI StructureScan Mini XT, and the presence of electric conduit was confirmed with a power sweep using the RD 7100. After scanning was completed, all bollards were successfully installed with no issues. Penhall Technologies looks forward to continued work at the Atlanta Airport.

Protect against cutting rebar or conduit when performing core drilling

concrete scanning in atlanta gaPenhall Technologies completed a project for a general contractor at The Battery outside the new Atlanta Braves, Suntrust Park. The contractor needed to protect against cutting rebar or conduit when performing a core drill. Ground penetrating radar was used to locate the rebar. This was the perfect method for a slab on grade project, as it only requires access to one side of the concrete. To locate live conduits, a utility wand was used to sweep each area for power and communication lines. Our GPR Analyst was able to provide quick and reliable results, which allowed the project to stay on time and on budget.

Penhall marks the rebar found after performing scanning

Scanning with ground penetrating radar to avoid hitting cablesPenhall performed a scan using ground penetrating radar on 6″ thick post tension slab prior to coring to avoid any cables or other structural wires in the slab at a project in Atlanta, GA.

Concrete Scanning used to check for obstructions in concrete

Concrete scanning to check for obstructionsIn Marietta, GA, we were asked to check for obstructions, such as rebar, conduit and utilities, before core drilling a 4″ hole on a 6″ tick concrete slab.

We make sure we have all the tools and antennas to ensure the most accurate concrete scan

best equipment for concrete scanningPenhall traveled north from the Atlanta office to Euharlee, GA to examine a 6′ x6′ area on a 6″ thick elevated concrete slab. We were able to find and mark rebar and post tension cables to avoid when cutting.

Ground penetrating radar is used by our expert analysts to detect hazards before cutting or drilling

At a project in Alpharetta, GA, we were asked to scan 29 separate locations prior to drilling cores of sizes ranging from 2″ – 6″ on a 5″ thick concrete slab. We were able to avoid any hazards when finally administering the drilling.