Vehicle Mounted Ground Penetrating Radar

Part of the design phase of the works involves undertaking a full GPR (ground penetrating radar) of the whole scheme. As this is inner-city works affecting the carriageway and walkways, the majority of the GPR surveying requires night-time road works/lane closures to safely undertake them.

To help mitigate the time taken to undertake the GPR (which is normally conducted using a hand pushed ‘barrow’ type device) our contractor, 40Seven, has mounted a larger GPR unit to a small 4WD ATV vehicle as pictured. The device is fully incorporated into the vehicle including reading the wheel motions and incorporating a GPS unit to ensure accurate tracking. The vehicle also auto-sprays as it goes to delineate surveyed areas.

The result is that in larger areas such as the highway and larger, cleared pedestrian areas, the vehicle can be used to cover the area more rapidly and reduce the number of shifts required to undertake the works, thus reducing public disruption. It is also road legal so can be used to scan roads where it may be difficult or time restrictive to obtain traffic management permission to close the road/lane.

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Entry submitted by John Sisk & Son

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