GPRS Locates Steel Beams Underneath Sidewalk In Pittsburgh, Pennsylvania

Ground Penetrating Radar Systems (GPRS) was requested on site by a general contractor to perform a Ground Penetrating Radar (GPR) survey in downtown Pittsburgh. GPRS was called out to determine the locations of structural beams underneath the sidewalk. Prior to GPRS’s arrival on site the contractor was removing portions of the concrete slab when structural beams were struck during saw cutting. With a comprehensive GPR scanning of the area, GPRS was able to successfully locate the beams embedded in the concrete. With this information the contractor is now able to confidently and successfully cut the concrete and install HVAC ventilation ducts with the assurance that the beams will not be impacted. Before you saw cut or core drill, call GPRS to know what’s underground!

The first image shows a GPRS technician utilizing the new 350 mhz antenna. The mini XT concrete antenna was also used to precisely locate the structural beams. The exact locations of the beams were painted in white.

Ground Penetrating Radar Systems is the best way to ensure the locations of reinforcement and conduits prior to saw cutting/drilling through concrete. For more information on how GPRS, Inc. can help you on your next project, please contact Nate Stair at (412) 935-5357, or via email at We also have the capabilities of locating underground utilities, UST’s, and voids.