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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Where is the job located?

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What services can we assist you with?

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 size of the area(s) that need to be scanned? How many areas?

What is the thickness of the slab?

What is the scanning in preparation for?

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

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

What is the size of the area that needs to be scanned in square feet or linear feet?

How many scan locations?

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

How many utilities are running through the proposed scan area?

Do we have access to meters or utility boxes?

What is the locating in preparation for?

Contact Information

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Other comments or project details?

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

Montgomery Concrete Scanning Projects that Penhall Technologies Has Worked On


Ground Penetrating radar used to locate post tension cables before drilling to relocate electrical conduits

concrete scan to locate post tension cablePenhall Technologies was hired for a project at a new apartment complex in Auburn.  The job consisted mainly of the top level of the apartment’s parking deck. Previously, during construction, the electrical contractors of this project had unintentionally ran the main electrical feeds to a large switch panel in the wrong location. This meant that the electrical feeds needed to be relocated a few feet away. The client knew that the slab had post tension cables in it, so he called Penhall Technologies to locate them in the slab. The goal was to make sure that the contractor could relocate the conduits without any further, and much more expensive, structural damage. Upon arrival, our Penhall Technologies GPR analyst first noticed that the electrical room was close to the exterior of the building, meaning the cables begin to expand and lay flat very close to the necessary location. Using ground penetrating radar, the analyst was able to quickly identify their location. The analyst also found that there were no utilities in the area, and then he proceeded to located safe areas for the drilling contractor, so he could set anchors without fear of damaging any underground utilities.

All of this work was accomplished in only one hour. By ensuring that the project is completed in a safe and accurate manner, it saves the contractor from more frustration, time, and money. This particular job site has ran into numerous issues not foreseen during the building process, and Penhall Technologies has been with them to help every step of the way with 0 hits to date. Next time your job doesn’t go as planned, remember Penhall Technologies for fast, professional, and accurate concrete scanning service!