Laser Surveys

Topographical Surveys, Land Surveys, Building Surveys And Underground Drainage Surveying

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A Practical Guide For Underground Services Location and CCTV Drainage Surveys

Gas

There is No equipment that will trace a plastic pipe that does not have a trace wire in-corporated in it. If a trace wire is present this service is traced in a similar manner to water.

What can go wrong
If the gas pipes are laid and the trace wire in each pipe section is not married up correctly the signal is terminated and the only method of locating is GPR.

Fibre Optic

Fibre Optic can only be traced using GPR. Access to Fibre Optic plant is prohibited by law.

Telephone Cables

Although it is possible to trace the passive signal from telephone cables it is illegal to interfere with Telecom’s equipment. BT provide a “Dial before you Dig” service, but the indicated route is sometimes not precise and often only derived from record drawings.

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Last Updated Monday, August 8, 2005 16:26