Before any penetrative works take place it is advisable to mark out the infrastructure that exists beneath the ground. Current buried assets information, more commonly known as "stats", can be inaccurate, incomplete and often in need of updating.
Powers & Tiltman combines knowledge with technology to establish accurate position and depth of buried services that exist beneath a site. These are clearly marked on the ground in paint or chalk (dependant on site sensitivity). Should a more permanent record be required site data can be transferred on to a measured drawing or base plan supplied.
What sort of equipment is used for underground utilities surveys?
We use EM + GPR technology:
EM (Electro Magnetic) technology traces live services or known services that a low voltage electric pulse can be passed along and traced from the surface.
GPR (Ground Penetration Radar) once all known services have been traced using EM, GPR is then used to scan the site for any services which are unable to be located by EM e.g. plastic pipes or unknown services.
Do utilities surveys detect everything?
No underground utilities will trace most services on site using a combination of service records, EM + GPR. The majority of services will be traced. There are limitations however. Services which are too deep or too small for GPR to get a clear reading and are not shown on statutory record plans may not be detected.
Can you tell how deep the services are?
Yes the GPR + EM equipment lets us know the depth of the service being traced.
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