https://padlet.com/gprsurvey/gprsurveyors en-us 2022-04-26 09:31:02 UTC 2022-04-26 09:36:28 UTC hello@padlet.com gprsurvey https://padlet.com/gprsurvey/gprsurveyors/wish/2158205372 2022-04-26 09:32:34 UTC https://padlet.com/gprsurvey/gprsurveyors/wish/2158205372 gprsurvey https://padlet.com/gprsurvey/gprsurveyors/wish/2158205831 2022-04-26 09:33:01 UTC https://padlet.com/gprsurvey/gprsurveyors/wish/2158205831 gprsurvey https://padlet.com/gprsurvey/gprsurveyors/wish/2158209695 Ground Penetrating Radar (GPR) Surveys are methodically done by KB GPR Surveys, which is the best of most organisations. Experienced GPR surveyors can only conduct such underground inspections. Learn more about the importance of hiring them by reading everything below.

Locate reinforcing bars underground

Concrete scanning is probably most commonly used for rebar (reinforcing bar) location. It is essential to locate reinforcement and other features in concrete before cutting or drilling. In most cases, surveyors from top GPR survey companies scan the area where the intrusive works will be carried out, marking up detected rebar, and other features in-site. In this type of scenario, it is not necessary to determine the full distribution of the reinforcement.

Provide accurate thickness surveys

Top GPR survey companies offer GPR surveys to determine thickness readings for concrete slabs, screeds, walls, road construction, etc. Variations in thickness and construction detail can also be detected. Typically, only one-sided access is required.

Look for underfloor heating pipes

Underfloor heating pipes are nearly always plastic. Consequently, a cover metre and other scanning methods cannot detect them. On the other hand, GPR surveys provide fast and efficient non-destructive testing to locate underfloor heating pipes. It can detect and locate both metal and plastic pipes.

Find tendon location

Whether you need to locate tendons to assess their condition, verify their presence, or accurately locate them before cutting or drilling concrete, GPR surveys are probably the most reliable concrete scanning method for detecting tendons. Tendons can be deep and are usually behind a layer of reinforcement, which can be dense, particularly near anchors. Consequently, most other techniques can’t detect them.

Detect all types of metal objects

GPR detects all metal objects, including clamping cables, rebars, aluminium or copper tubing, and more. This method can also locate all types of non-metallic, such as layers of air, plastic, electrical lines, glass fibres, cables, and wood located in the concrete. In addition, it is possible to identify objects in a plurality of layers depending on the nature of the concrete structure, spaces between the reinforcing bars, the size of the object and the depth of the object. It is also possible to indicate the thickness of a wall or a concrete slab.

Applicable to different floor coverings

GPR can be used on different floor coverings. The results may not always be satisfactory, especially when used on natural stone slabs or tiles. The tiles often contain quartz, which can interfere with the radar waves. The plastic film in the insulating layers, metal screens in soil systems and air layers in multilayer structures are also factors that can cause reductions in the power measurement or limit the depth measurement range.

It is also possible to use GPR to scan plaster, insulating layers, and other materials. The power measurement, however, decreases accordingly. GPR surveyors use GPR directly on concrete surfaces or on the ground and a further layer above the concrete. The layers containing metal or existing among the layers of air layers negatively influence the power measurement of the device.

Find lost graves

Using GPR, surveyors can locate known marked, unmarked, and lost graves in cemeteries. Some cemeteries are hundreds of years old, and unmarked graves can be common. Misplaced or poorly located headstones or markers can further complicate matters. Moreover, records are often vague, lost, destroyed, or incomplete, and there may be questions about the precise extent of a cemetery. There is often no surface expression of the burial location, and graves become lost.

Due to the sensitivity of these sites, the challenge is to explore the subsurface without disturbing the soil and burials. GPR is the only viable non-destructive method used for grave detection. During the grave detection survey, GPR surveyors will mark the location of detected graves on the ground with a paint line down the centre axis of the grave for the length of the grave.

GPR cemetery surveys are non-intrusive and ideal for locating cemeteries and unmarked grave detection. The surveyors will use GPR to detect several features that help identify a grave, including the coffin or casket (wood, metal, lead-lined, etc.) or vault, disturbed ground structure and excavation features, and movement or voids caused by the collapse of the coffin or casket. 

GPR surveyors are the only ones who can tell if there are underground issues. Competent candidates can be spotted by browsing several review sites. The best ones would certainly receive glowing testimonials from previous clients.

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