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Concrete Scanning WisconsinRebar and Conduit Locating at Library - Milwaukee, WI

Ground Penetrating Radar Systems, Inc. – GPRS – of Wisconsin was contacted by a mechanical contractor out of Milwaukee to scan for reinforcing at the Milwaukee Library prior to core drilling over 50 locations. This building is one of the first elevated slab concrete structures in Milwaukee, and damaging and cutting through rebar would weaken the structure. GPRS scanned for all of the mechanical, electrical, plumbing contractors on site for the entire project. For this project, GPRS was required to mark the findings with chalk because the client was keeping the terrazzo flooring. The slab was approximately 10” in thickness and the rebar ran on angles and had two layers of reinforcing. Many areas were congested and rebar was going in multiple different directions. GPRS also identified lighting conduits and was able to determine the difference between bar and conduit. The challenge was not match for the Wisconsin GPRS team! GPRS brought the necessary tools including 1600MHz GPR Antenna, Palm GPR Antenna, Structure Scan Mini, as well as Radio Detection for conduits to provide the most thorough investigation.

Rebar and Conduit Locating at Library - Milwaukee, WI

This image was included in the job summary report that was provided to the client upon completion of the scan. GPRS annotated the picture so that the client would be able to fully understanding the markings.

Ground penetrating radar is a great tool to scan areas of post tension cables, rebar, and conduits, including PVC pipes and can also be used to locate underground utilities prior to digging or excavating. For GPR needs in Milwaukee, Racine, Kenosha, Green Bay, Fond du Lac, Sun Prairie, Madison, Middleton, Monroe, Stevens Point, Eau Claire or anywhere else in the state not listed, contact your local GPR Expert.

GPRS’s Wisconsin Expert: Christopher A. Geary at 414-795-6845 or send him an email at

Concrete Scanning Milwaukee

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