f Imaging Structures under a Steel-Reinforced Concrete Floor

We had undertaken a study aimed at assessing the quality of images obtained with ground-penetrating radars (GPR). Using the commercial, impulsive pulseEKKO 1000 from Sensors & Software, and non-standard acquisition geometries, we had collected several 3-D datasets in a natural, suburban environment in Newtown, Connecticut. When approached by the building manager at our Ridgefield research center who needed to break open a floor in one of the workshops for the construction of a new elevator, we thought it a challenging opportunity, particularly considering the steel rebars we expected to find in the floor of the workshop.