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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.

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

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Portland Concrete Scanning Projects that Penhall Worked On

Locate rebar and structural components in concrete

A popular athletic wear company opened a new office in the Montgomery Park Building. They needed to scan several locations for core drilling. This particular building is more than 100 years old, so they wanted to avoid rebar and check for any other structural components. Our analyst used both the GSSI Mini and RD7100 and found power & communication lines and rebar. He also located old conduit in the floor, although not active anymore, as the original power ran in the slab.

Concrete scanning uses for plumbing companies

drain concrete scanning A plumbing company hired Penhall technologies to scan a concrete slab in a retirement building. The client wanted to core drill a hole in the proposed location to change the drain location of a shower. However, that was not a simple task as this building had post tension cable in the concrete. Using the Mini HR, our analyst scanned the location for all surrounding cables and rebar.  By expanding the proposed drilling area size and analyzing the data, the analyst differentiated potential post tension cable from rebar. As seen in the image, the location of the new drain was clear of cables but did go through several rebar. Our analyst gave approximate depths of the bars. This allowed our client to make an informed decision on where to cut through the floor.

Locate rebar to avoid accidents and delays

concrete scanning Penhall recently scanned for a customer that needed to core drill a 2.5” hole to run manufacturing related tubing through the floor. Our analyst used the GSSI Mini HR to scan the area. Since the area was very clean, the manufacturing facility did not want us to mark the floor. Therefore, our analyst used tape for the markings. After scanning, the client realized that the original hole location would have gone through rebar. Now, knowing where the rebar was, he could adjust the proposed location. In addition, we scanned the ceiling so that the client could prevent drilling directly above other piping.

Scan before drilling anchors to base

A construction company hired Penhall Technologies to scan before drilling multiple 5” anchors for the base of a grand staircase. The job took place in a new hotel in downtown Portland. The client wanted to avoid striking any rebar and post tension cables in the slab. Both corners of the staircase required multiple anchors and were directly next to a structural column. This is an especially bad place to drill without scanning first. The analyst initially scanned with the GSSI  Mini HR. Then, he used the 2000 MHZ Palm on tight spaces between the stairs and the support beams. He located several post tension cables and rebar, especially near the column. He marked out all objects in the slab. The client will work directly with the building engineers to manufacture a custom plate to avoid the targets located. This will allow the team to safely anchor the stair case.

Concrete scanning for renovations

A construction company hired Penhall Technologies for concrete scanning. The Washington County affairs building was undergoing major renovation and seismic upgrades. Installation of large steel beams directly into the concrete was taking place in all four corners of the building. The design of the building had significant post tension cable in the slab, particularly in the area where large anchors were being installed. Our analysts scanned the area using the mini XT and HR, as well as the SIR 4000. After the scan, the client contracted Penhall to re engineer the design and avoid the post tension cable and precisely drill.


Penhall technologies performs concrete scanning before drilling

Recently a plumbing company hired Penhall Technologies to scan four locations for the remodeling of a new downtown restaurant. The location was above an underground parking structure, and the client wanted to know what was in the slab before core drilling and installing anchors. They made the right decision by calling Penhall Technologies, as several locations were above post tension cables. Some were directly located where they wanted to drill. They made some simple adjustments, and based on our marked locations they could safely move forward. The owner and crew were very interested and excited by the abilities of the Mini XT and how a professional analyst can differentiate targets within the concrete. The entire job only took one hour and gave the client the confidence to move forward and avoid expensive repairs, they plan to call Penhall Technologies again for future projects.