Global Construction Solutions experienced personnel uses both electromagnetic (EML) and ground penetrating radar (GPR) hardware and software for detecting underground utilities. The industry standard tools are electromagnetic (EML) detection wands that can be combined with a signal generator to detect conductive pipes and cables.
A GPR device can detect not only nonmetallic objects, but also provides 3D location (reporting depth as well as X,Y location). This makes GPR a superior mapping technology to EML wands. When combined with GNSS locators, GPR can accurately determine the Geo-location of underground infrastructure in 3D. The use of GPR has become almost mandatory in the water industry, which is increasing its use of plastic piping. (Though GPR is not particularly good at detecting the plastic pipe itself, it detects the contents of the pipe such as water.)