A contractor was asked to core a series of 3″ holes through a concrete slab. Normally this would be a simple enough task, however upon inspection it was noted that the slab contained in-floor heating. Even a small “nick” in one of these tubes would cause significant damage and put the project way over budget. It was determined that the tubes must be located before any coring could begin.

To minimize the risk of hitting a tube, GPR was used to scan each of the drill locations. Conquest 100’s quick grid collection and rapid on–board processing allowed for each drill site to be scanned and cleared in a matter of minutes.

A 2ft by 2ft grid was collected at each of the locations where holes needed to be cored. Since the first priority was to avoid all embedments the location of the cores was adjusted based on the depth slice images.

The depth slice images generated by Conquest 100 clearly showed the in-floor heating and reinforcement allowing for operators to have accurate information on the interior structure before beginning work. In select locations, the heat tubing which had a diameter of 1.25 inches was spaced 6 inches apart leaving little room for error.