The underground location of wires and pipes is determined with the use of utility mapping. Utility mapping prevents utilities from being hit during work, eliminating the need for delays and repairs that may be costly in terms of time and money. Project planners can determine the cost of work with a high accuracy when utility maps are used. Contact www.precision-um.co.uk for more information.
There are some notable challenges to using utility mapping. Surveyors often run into problems with mapping and record accuracy, especially since hidden object locations create difficulty with mapping.
When utility mapping is done, what technologies are used?
SUE, also known as Subsurface Utility Engineering, had done years of work to create methods to get over the hurdles that underground utility infrastructures create when mapping and locating measure are carried out. Information about subsurface infrastructure is obtained by pairing historical records and other non-technical means with geophysical technology.
Among the various technologies, the following are commonly used:
Emi Or Electromagnetic Induction
EMI makes use of a transmitter to create a current that causes a primary magnetic field to be induced. Subsurface utilities are located with the magnetic field when deflections are picked up by a receiver that is tuned to the correct frequency. Although metal objects in the vicinity can affect how well EMI works, EMI can work in areas where high-moisture soil is present.
Gpr Or Ground Penetrating Radar
This method is more popular than EMI and is usually used when utility mapping is required. Subsurface utilities are located with GPR by using directional electromagnetic waves emitted in MHz and GHz frequencies while monitoring for signal returns. Soil with a high amount of moisture can affect GPR.
In utility mapping, what benefits can GPR offer?
Non-metallic and metallic utilities can be located with a high degree of accuracy when GPR surveying technologies are used. GPR is the preferred choice for surveyors when utility mapping surveys must be made due to:
Data being acquired rapidly
A low cost of operation
Imagery produced at high resolutions
Oblique measurements can give GPR problems, in addition to the problems from soil moisture. A utility mapping survey with higher accuracy can be obtained when GPR is used along with radio detection and other technologies.