Ground Penetrating Radar Systems Inc.

GPR Concrete Scanning at Library Renovation – St. Louis, MO

Ground Penetrating Radar Systems, Inc. (GPRS) was contacted by a local contractor in order to perform GPR at the Olin library renovation project located on the campus of Washington University in St. Louis. The contractor needed to locate conduit or utilities because they were renovating the library, and needed to saw cut for a new door entrances on 3 different walls. The company contacted GPRS of St. Louis in order not to hit any conduit or unknown utilities in the slab walls. GPRS performed GPR in the areas of concern the contractor indicated.

Isaiah Runkle of GPRS was contacted in order to perform the scan at this location. Using our 1600MHz antenna radar equipment, we were able to map out conduit, and any other anomalies which were running through the areas of concern. GPRS was able to find locations that were clear of any conduit or unknown utilities. The contractor was pleased with our results and felt relieved that they were able to work in the areas knowing where any conduit or any other anomalies were located. We scanned each area in a north/south, east/west pattern at each location. We also used the RD8000 to locate which will locate any power or communications as well. All findings were marked out directly on the surface with marker. Each anomaly was labeled accordingly with a depth to the top of each anomaly. The findings were explained clearly to the onsite contact, and GPRS was able to recommend the best path do saw cut safely.

Upon arriving onsite, I met with the site contact and went over the areas of concern that needed to be scanned. The areas needed to be clear of debris and clearly marked. The contractor wanted to saw cut through the slab walls that were approx. 12” thick, and reinforced with a double mat rebar every 12’’ on center. In order to reach 4 of the locations we needed a lift. The contractor provided a boom lift and operator to reach these areas. We marked out each location on the surface with permanent marker. Each anomaly was labeled accordingly such as unknown, conduit, power or communications. I then added a depth to each individual anomaly, so the contractor knew the depth of each anomaly in the concrete slab wall. I clearly explained the findings to the contractor, and advised where to saw cut so they would not hit anything when saw cutting the slab walls.

Below is a photo taken on-site which depicts Isaiah locating any conduit, unknown utilities or any other anomalies located in the area of concern. Isaiah was on a lift that was provided and operated by the contractor. Isaiah was wearing his safety harness and was tied off correctly in order to perform each scan. If you have a need for utility locating or concrete scanned before coring or saw cutting contact, Isaiah Runkle (314-412-9806) or who works out of the St. Louis office and covers the greater St. Louis area.

GPR Concrete Scanning at Library Renovation – St. Louis, MO

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