Commitment to Safety • Reliable Results
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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.
Sacramento Concrete Scanning Projects that Penhall Worked On
GPR scanning on top of spillway
A construction company asked Penhall to perform concrete scanning on top of a new auxiliary spillway. Our analysts scanned the area and marked out hazards within the top 8” of the slab. He used the GSSI Mini XT with a 2700 MHz antenna to scan the area in real time and marked the hazards directly on to the concrete. Because of the marked scanned area, the client completed the project safely and on time.
Scanning before cell tower installation
An engineering company installing a new cell tower at the Sacramento Metro Airport hired Penhall Technologies for concrete scanning. The job took place on top of the parking garage and throughout the structure. Our analyst scanned the areas and marked out hazards in real time, allowing the drillers to operate immediately after. The analysts’ findings allowed the engineers to identify a safe route for the +900 feet of hybrid fiber optic cabling throughout the post tensioned deck and precast pretension paneling with live electrical. Working from a vertical lifeline, Penhall implemented a fall protection plan for public and work crew safety.
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 below in the subsurface. Penhall used the GSSI Mini XT with a 2700 MHz antenna to scan the area. We followed up by performing sweeps with our radio detection device (RD 7100). This picks up any live power or communication lines.
Identify rebar patterns before replacement of steel beams and installation of HVAC
Penhall 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
Penhall recently traveled to Mill Valley, CA to use ground penetrating radar to scan and locate conduit and utilities. We examined a structural slab that was approximately 16″ x 16″.