GPRS Locates PT Cables at Stadium in Tampa

Recently, Ground Penetrating Radar Systems (GPRS) of Tampa, FL was requested on-site by a general contractor to perform a Ground Penetrating Radar (GPR) survey at Steinbrenner Field in Tampa, FL. The purpose of our scanning was to locate any rebar and/or post-tension (PT) cables within the concrete securing the stadium’s seating.  We first scanned the top of the concrete slabs and found that the areas we were scanning contained post-tension cables (3” from the surface of the slab) as well as a foam layer in the middle of the concrete.  The contractor working at the stadium has plans to core drill through the concrete in order to run electrical lines from a new kitchen addition to an existing electrical room below the stands.  The contractor was worried about hitting the post-tension cables and other unknown anomalies which may have been in the 10” concrete slab.  All anomalies present were clearly marked on the surface so the contractor knew what reinforcing was in the concrete around their planned drilling locations. After this, we also scanned from below the slab to make sure there were no post-tension cables on the other side of the middle foam layer. We scanned multiple locations while on-site and explained all of our findings and markings.  The general contractor was able to safely drill his 3” holes through the slab following the completion of our scanning. Ground Penetrating Radar Systems is the best way to ensure the locations of rebar, post-tension cables and other anomalies in concrete prior to any type of excavation such as saw cutting, trenching or core drilling.  In total, roughly 15 different 24”x24” areas were scanned during this particular trip to the site.  After all findings were clearly marked on the surface, we then went back through the areas and put a clear-coat spray on our marks to make sure that none of our findings would be worn away or erased from foot traffic and other work going on in the areas. The photo below depicts Justin Rasanow, our Tampa Area Manager, scanning the portion of the stadium where the seating will be present.  He is using our 1600MHz antenna to scan the concrete slab. Along with the 1600MHz antenna we also used our RD-7000 (not pictured), which is a device that detects live power and RF signals below the surface.  This device is used in locating electrical or telephone lines embedded in concrete.  Following our scanning, the contractor was pleased that they were able to core drill all of their locations without hitting any post-tension cables, reinforcing, or conduits.

Please contact Justin Rasanow at (727) 420-3292 or for any scanning needs that you may have.

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