Underground Utility Mapping & PAS128 Surveys
Service Tracing Surveys

Underground utility mapping services available throughout the UK to PAS128 standards.

Using the latest in underground pipe and cable detection equipment, Ogilvie Geomatics Utility Mapping Solutions offers you a complete underground utility location and mapping service.

We have invested in the very latest multi-frequency ground penetrating radar systems (GPR), Electromagnetic (EML) and GPS equipment. This enables the accurate detection mapping of underground utilities either at design stage or pre-excavation / construction.

We offer all four PAS128  survey types in house

• D = Desktop utility record searches
• C = Site reconnaissance
• B = Detection of underground utilities by multiple advanced methodologies
• A = Verification by excavation.

Our vast knowledge of underground utility networks plus highly experienced management and survey teams allows us to be able to offer unrivaled levels of competency and accurate survey data. We are able to advise clients on which methodologies that are best suited to a project and help to use utility mapping survey data as a risk management tool. This allows projects to continue into their construction phase without unforeseen issues.       

We undertake underground utility mapping to provide projects with up to date, accurate information relating to underground utilities. These typically include communications (BT/Virgin media etc), Water, Gas and electricity . The depth of investigation will vary depending on the site, but will usually be between 2-3m. Utility mapping is efficient when a combination of techniques are used.

Underground Tracing Surveys

Electromagnetic (EML) cable and metal pipe locators

This has become the accepted method/technology for finding buried metal cables and pipes. By using a generator to induce a signal along a utility, the signal can be traced to provide reasonably precise locations.

Ground Radar (GPR)

Ground penetrating radar is a nondestructive geophysical method that produces a continuous cross-sectional profile or record of subsurface features, without drilling, probing, or digging. Ground penetrating radar (GPR) profiles are used for evaluating the location and depth of buried objects and to investigate the presence and continuity of natural subsurface conditions and features.

Ground penetrating radar operates by transmitting pulses of ultra-high frequency radio waves (microwave electromagnetic energy) down through an antenna. The transmitted energy is reflected from various buried objects or distinct contacts between different earth materials. The antenna then receives the reflected waves and stores them in the digital control unit. This data can then be interpreted on site or post processed for greater clarity.  

By using a multi instrument/technology approach as specified by PAS128, the highest levels of confidence and accuracy can be achieved. All of our management and site surveyors are highly experienced and qualified in all aspects of utility mapping surveys.  We deliver the safest and most cost-efficient utility surveying, mapping solutions available to the utility professional.



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