Here’s Why You Should Hire GPR Surveyors {{ currentPage ? currentPage.title : "" }}

Ground-penetrating Radar (GPR) is the general term applied to techniques that employ radio waves, typically in the 1 to 1000 MHz frequency range. This is used to map structures and features (or man-made structures) buried in the ground. Historically, this was primarily focused on mapping structures in the ground. Recently, GPR has also been used in the non-destructive testing of non-metallic structures. However, this cannot be done by just anyone. Only professional GPR surveyors can efficiently execute this method.

To further explain why here are the reasons as to why you need their expertise.

Detect hidden crypts and vaults

Many studies have been made that involve GPR to do surveys on historical floors in old churches. But before conducting the survey, GPR surveying experts would inspect the technical state assessment of the building first. Their goal is to use GPR to detect underfloor air gaps, and determine historical items and articles underground, such as rubble, human remains, brick walls and pipes.

GPR is specifically valuable for conducting surveys on bigger areas since it enables dealing with a huge amount of data in a feasible period. In other studies, the GPR method was proven effective in imaging reinforcement bars, cracks, defects in the form of air voids, delamination and moisture, or systems applied for concrete strengthening.

GPR is usually known as a non-destructive method, which is particularly suitable for unearthing artefacts. Nowadays, it is becoming more often applied in cultural heritage buildings due to the necessity to preserve such structures for future generations. The exact structure of historical objects dated several centuries back is usually unknown since the technical documentation is incomplete or entirely gone. An efficient method to collect information in such situations is in-situ inspection. This is often supported by numerical analyses that provide design guidelines and recommendations for planned reconstruction, strengthening, and restoration work.

Find lost graves

Professional GPR surveyors can find known unmarked, lost, and marked graves in cemeteries using this method. 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. 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.

Because of the sensitivity of these locations, locating the subsurface without disturbing the soil or tomb sites can be difficult. GPR is the only viable non-destructive method used for grave detection. During the grave detection survey, GPR surveying experts 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 perfect for finding cemeteries and for unmarked grave detection. The surveyors will use GPR survey 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.

Detect sinkholes and voids

Often dissolution features, such as sinkholes and voids, develop due to water movement through subsurface drainage systems within soluble rocks, like dolomite and limestone. These voids create impediments to a stable construction foundation – particularly in near-surface situations. Moreover, operating heavy equipment when uncharted gaps exist beneath the surface can be extremely dangerous. In industrial landscapes, professionals find out that faulty construction, pipeline leaks, or rogue chemical dispersions are generally culprits in an accelerated rate of soil erosion and void features. More often than not, these problems are identified within the first ten feet of the ground. Hence, a lot of people hire GPR survey professionals to aid in detecting void development. Detecting sinkholes and voids requires a thorough investigation and mapping to aid in construction development. Depending on your absolute survey depth and budget, you can find professionals who can offer multiple instrumentations that can accurately detect and subsurface structures and voids. Professionals may also use advanced GPR post-processing and imaging software to form a 3D picture of what they have detected underground. They will see how the sinkholes, voids, and subsidence look like by producing a CAD drawing. With this technology, you can detect both deep and shallow sinkholes, manufactured voids, and more.

After reading this article, you are now more aware of how important it is to hire GPR surveyors for your projects, whether for construction, body detection, natural mineral search, and so forth. These professionals will make sure that everything underground will be made transparent for you. That way, you can push through with any projects safely and efficiently. When you decide to hire one, make sure to find the best ones out there to guarantee you fast yet quality work.

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