GPRS Locates the Paths of Embedded Conduits & Rebar

Prior to core drilling concrete elevated slabs, it’s imperative to determine what is embedded in the slab. In many instances during construction of buildings, conduits & other utilities will be placed in the actual pour of the concrete floor. In some cases, the structural integrity of a building could be compromised if any reinforcing steel is cut. Knowing the pattern of reinforcing steel is extremely important in those cases.

For this project a general contractor had to core drill multiple holes in numerous areas throughout a college dormitory in Ann Arbor, MI which was being updated. They needed to identify any existing utilities and the location of any reinforcing steel that was embedded in the concrete. The contractor couldn’t afford to have any existing utilities or reinforcing steel compromised during the process.

GPRS for the Ann Arbor & Detroit market was contacted to conduct a GPR investigation of the floor to locate any utilities & reinforcing steel prior to the core drilling being conducted. GPRS was able to scan the different areas with a 1600 MHz high resolution antenna & determine if any live power was passing through using the RD8000 (Radio Detection Device). They marked the paths of existing conduits & reinforcing steel passing through the proposed areas directly on the surface and communicated all findings with the contractor to ensure understanding of the markings.

For more information, to request a quote or to schedule your next project, contact Regional Manager of Michigan, Thaddeus Bullock 734.377.4551 or  For a complete listing of our nationwide locations, visit

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