Word-of-the-Month: Ground-Penetrating Radar
A ground-penetrating radar is a geophysical method that uses radar pulses to image the subsurface. This nondestructive testing method uses electromagnetic radiation to reflect signals from subsurface structures to detect concealed objects.
It can be used to detect embedded objects through a variety of media including rock, soil, ice, fresh water, pavements, and physical structures.
In construction environments, it can be used to locate rebar, post tension cables, metal and plastic conduits, glass-fiber cables, voids and wood in subsurface structures. The radar provides real-time 2D images inside concrete or other structures and generates true images for direct on-site evaluation of scan data.
The first patent for a system designed to use continuous-wave radar to locate buried objects was submitted in 1910, six years after the first patent for radar itself.
As part of the Tru by Hilton and Home 2 Suites by Hilton hotel renovation in downtown Minneapolis, Stahl is using a Hilti scanner to detect and mark reliable drilling locations in the existing 76,000-square-foot building.