Commitment to Safety • Reliable Results
Responsive Resources • Established Expertise

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.

Other Service

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.

What is the scanning in preparation for?

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

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

What is the locating in preparation for?

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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!

Hilo Concrete Scanning Projects that Penhall Technologies Has Worked On

Scan concrete before plumbing work

We received a request for GPR scanning at a medical facility. The contractor required a GPR scan of (15) locations on elevated concrete slab. He was planning to core holes of different sizes for new plumbing and conduits. The client wanted to stay clear from drilling into any existing conduits. This would prevent slurry from spilling into the new conduits, since their routes were unknown. There was a separate room with (4) locations that the analyst scanned with a MINI XT. He located multiple PVC, metal pipes, conduits and PT cables apparent in the 10” slab. After reviewing the data, the contractor proposed to develop a new layout before coring with the structural engineer. Our Hawaii field office will ensure that you have the right data and tools to complete your mission.

GPR scanning along the side of the bridge

Hilo concrete scanning

Penhall Technologies received a request for GPR scanning on the side of a bridge. The contractor required a GPR scan of (14) 3’x3’ areas along the side of a bridge, before drilling 5” anchors to mount a new pipe. The analysts had to make sure that there wast any rebar or any other embedded objects for the proposed mounted pipe. Since the scanning was taking place on the side of the bridge, the analysts completed a risk assessment and ensured that they had the correct fall protection equipment required. Once safety measures were all in place, they proceeded to scan each location while 12’ above water.

After scanning each location, the data showed that certain layouts showed rebar. The analysts advised the contractor to stay clear from their marks. The contractor was confident with drilling his anchors after observing the analysts’ communication and interpretation of the data to him.