The Ground Penetrating Radar uses electromagnetic radiation in the microwave band (UHF/VHF frequencies to detect reflected signals from subsurface structures. GPR can be used over a variety of surfaces When the ground conditions are right. Utility Surveyors can use GPR to detect subsurface objects, changes in material properties, and voids and cracks.
We use the GPR to confirm services and to locate services which are not detectable by other geophysical techniques.
Over the last few years Benchmark Surveys have been expanding their capability to provide utility surveys to PAS 128 Standard. To have an understanding of the buried information across any site that is to be developed is an invaluable asset to the initial design process.
Pipe and cable depths, locations and routes are very important to record from a health and safety, time, and money point of view.
We have staff who have undertaken Sygma utility training in the various detection equipment available including Ground Penetration Radar.
Benchmark Surveys will to the best of our ability identify and locate buried utilities but depending on the nature of the site the percentage of all buried utilities detected will vary.