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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!


Sacramento Concrete Scanning Projects that Penhall Worked On

Penhall Technologies scans for exact location of post tension cables

Penhall Technologies was hired when a homeowner needed to scan a concrete slab in his garage, before drilling anchors to install a vehicle lift. There was a simple stamp in the concrete that stated the presence of post tension cables. The owner wanted to know the location of the cables prior to drilling. Penhall Technologies scanned the area and marked out hazards within the slab and additional hazards below the slab in the subsurface. Penhall used the GSSI Mini XT with a 2700 MHz antenna to scan the area and followed up by performing sweeps with our radio detection device (RD 7100), which will pick up any live power or communication lines. The project was completed in a safe and non-destructive manner.

Identify rebar patterns before replacement of steel beams and installation of HVAC

concrete scanning in sacramentoPenhall was asked to locate the rebar pattern before steel beams were placed and the floor was opened for new HVAC. Penhall arrived to an occupied building and completed the scans early enough for the steel and demo contractors to begin without disturbing the State Compensation Insurance Fund workers.

Scanning structural concrete slab to locate conduit and utilities

scanning structural slab for conduit and utilities
Penhall recently traveled to Mill Valley, CA to use ground penetrating radar to scan and locate conduit and utilities. We were instructed to examine a structural slab that was approximately 16″ x 16″.

Ground penetrating radar used to identify any obstructions before core drilling

concrete scanning using ground penetrating radar
At a location in Santa Clara, CA, Penhall was hired to locate and identify hazards using GPR concrete scanning. We scanned a 6″ thick concrete slab on pan decking prior to core drilling 2 areas.

Concrete wall scan at 20 feet above ground

on man lift to scan concrete wall
For a client in Sacramento, CA, we were required to scan a location 20′ above a finished floor. We used ground penetrating radar to scan the 10″ thick CMU wall before performing a 4″ core drilling.

Locate post tension cables and other obstructions before core drilling

GPR scanning used to locate embedded objects
Penhall used GPR scanning to locate embedded objects on this recent project in West Sacramento, CA. The objects were located prior to the coring of a 3′ x 5′ x 2′ area of concrete slab.