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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Locating post tension cables using Ground Penetrating Radar

Scanning concrete post tension slab to locate cables
A general contractor hired Penhall at a Los Angeles location to use Ground Penetrating Radar to scan post tension slabs on the 20th floor of a building. The 6′ x 4′ areas were scanned prior to having openings cut into them.

Scanning concrete to identify hazards before drilling

Scanning concrete to identify hazards before drilling
In Anaheim, CA, Penhall performed concrete scanning so the contractor could perform core drilling in 5 areas within a building.  Each area to be scanned were on an 8″ thick concrete slab.  Consequently, the analyst identified the hazards, so the drilling was done in safe and timely manner.

Determine the thickness of the concrete slab

GPR Scanning to determine the thickness of the concrete slab
At another location in Anaheim, CA, Penhall inspected six different areas for obstructions. 12″ x 12′ areas were to be scanned prior to core drilling. As a result, our analysts were able to thoroughly survey the concrete slab at depths that varied between 10″ and 12″.

Before drilling, be sure to scan for any potential hazards

Concrete Scanning on slab with metal pan decking
A customer in Woodland Hills, CA contacted Penhall to scan many different areas in preparation for an extensive amount of core drilling. The locations included 128 – 4″ areas, 55 – 6″ areas, and 2 – 10″ areas. Because the 7″ concrete slab sat on metal pan decking, it made this particular project unique.