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Ground Penetrating Radar (GPR) in Norwich

Ground-penetrating radar (GPR) uses radar pulses to image the subsurface. This non-destructive technology uses electromagnetic radiation in the microwave band (UHF/VHF frequencies) of the radio spectrum, and detects the reflected signals from subsurface structures.

The successful detection and mapping of buried utilities involves the combination of several techniques, the results of which are synthesised down to a single interpreted plot. The techniques and methodologies used will primarily depend upon the required outcome for the survey, the site conditions and the type of pipes or cables being targeted.

Benefits

  • Effective site investigation
  • Non-intrusive and safer way of mapping
  • Alleviates the need for digging and the disturbance of sensitive sites
  • Advantages over other techniques
  • Early detection of warning signs
  • Quick, reliable diagnosis

GPR is not without its limitations. GPR radio wave signals are absorbed by the ground with some soils (clays, saline) greatly limiting exploration depth. GPR effectiveness is thus site specific and varies greatly from place to place. GPR also responds to changes in soil type, density, water content, as well as many other buried objects, making unique identification of the desired target difficult.

Please note that many factors can affect the accuracy of the GPR system, including, without limitation, soil and other environmental conditions, electronic and radio signal interference and surface depth of pipe or cable to be locate. As such, Charter Oaks Ltd assumes no liability for the overall accuracy of the survey equipment and/or any maps prepared using the different types of equipment.

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