On this GPR concrete scanning job, we found an unusual pattern in this elevated slab. They used metal pan and left a trench unfilled with concrete. This trench had a metal plate above and below it to create a walkerduct like system. We do not encounter this style of construction too often on GPR concrete scanning jobs.
Ground Penetrating Radar - Archaeology - GPR - GPR Concrete Scanning - Geophysical Survey - Structural Analysis - GPR Concrete Scanning