Ground Penetrating Radar (GPR) is a versatile geophysical method that can be rapidly deployed to produce high-resolution images of the shallow subsurface. Using a range of antenna frequencies, GPR can be adapted to target different depths and resolutions, helping identify features relevant to site investigation, construction and structural assessment.
Contact UsGround Penetrating Radar (GPR) works by transmitting high-frequency electromagnetic waves into a structure or the ground which then reflect at material boundaries with contrasting electrical properties, while homogeneous materials produce minimal internal reflections. The wave reflections are then detected by the receiving antenna with the reflection time and assumed speed used to calculate the depth of the material boundary the wave reflected off. A real-time image of the subsurface can then be produced showing the depths and locations of subsurface anomalies.
GPR provides detailed insight into subsurface conditions by identifying buried objects, layer interfaces, voids and changes in material properties. The results can be used to determine feature depth, size and location, supporting construction planning, risk management and engineering design.
The value of GPR lies not just in the data collected, but in selecting the appropriate antenna frequency, survey design and interpretation approach for the site conditions.
Used to identify and map tree root systems beneath the surface by detecting contrasts between roots and surrounding soil. This can support assessment of root extent near structures, services or pavements, assisting with design, construction planning and arboricultural investigations.
Maps shallow subsurface layers by identifying material contrasts, helping estimate depth to bedrock and near-surface variability.
Identifies voids and subsurface anomalies associated with ground instability, including voiding beneath pavements and structures.
Highlights changes in subsurface moisture where sufficient contrast exists, providing an indication of groundwater conditions.
Locates buried infrastructure such as utilities, conduits and pipelines, improving safety during excavation and construction.
Assesses internal structural elements without damage, including reinforcement, slab thickness, voiding and potential defects.
Assesses pavement thickness, layer composition and ballast condition, supporting asset management and maintenance planning.
Locates buried features such as graves, artefacts and foundations, enabling non-invasive investigation of sensitive sites.
A GPR survey works by transmitting high-frequency electromagnetic waves into the ground or a structure and recording the reflected signals to image the image the shallow subsurface and internal structure of materials. It is commonly used to locate buried utilities, reinforcement, voids, subsurface layers and other hidden features without excavation.
A Ground Penetrating Radar (GPR) survey works by transmitting high-frequency electromagnetic waves into the ground or a structure. The waves reflect from boundaries where material properties change, and the reflected signals are recorded and processed to produce an image of the subsurface. This allows the depth and location of buried utilities, reinforcement, voids, layer interfaces and other subsurface features to be identified.
Ground Penetrating Radar (GPR) is commonly used for subsurface and structural investigations, including locating underground utilities, mapping subsurface layers, identifying voids and assessing internal condition of infrastructure. It is particularly useful where non-invasive insight is required prior to excavation, drilling or construction.
Yes, GPR concrete scanning is widely used to locate reinforcement, post-tension cables and embedded services within concrete, while also supporting underground utility detection in soil and pavement environments.
GPR scanning is most effective for shallow, high-resolution investigations where changes in material properties can be detected. It is commonly used for concrete assessment, utility location, void detection and near-surface geological profiling.
GPR survey results provide high-resolution data that can accurately determine the location, depth and relative size of subsurface features. Accuracy depends on material conditions, moisture content and survey design, but it significantly reduces uncertainty compared to relying on records alone.
Typically, site drawings, service plans, access details and the scope of investigation are required. This ensures the survey is designed appropriately and that data collected is fit for purpose.
Survey duration depends on the size and complexity of the area and site access conditions, but many GPR surveys can be completed within a few days. Larger or grid-based surveys may require additional time.
Deliverables typically include annotated drawings, radar profiles and interpreted results showing locations and depths of interpreted anomalies. Output from GPR surveys are tailored to project requirements and support design, planning and risk management decisions.
Ground Penetrating Radar (GPR) provides detailed insight into shallow subsurface conditions, supporting engineering investigations, infrastructure assessment and construction planning. The method enables continuous profiling between discrete investigation points, improving understanding of subsurface variability between investigation points.
GPR data can be integrated with boreholes, test pits and other geophysical datasets to improve interpretation confidence and provide a more complete understanding of subsurface conditions.
GPR concrete scanning is widely used to assess internal structural elements, supporting safe construction, modification and asset management. The method provides rapid, non-invasive insight into concrete structures.
Supports accurate location of embedded reinforcement and services, enabling safe drilling, cutting and structural modification works.
Used to identify voids, inconsistencies and changes in material properties, supporting defect identification and risk management.
GPR is commonly applied to locate buried infrastructure and map near-surface conditions, supporting excavation planning and reducing risk of service strikes.
Enables identification and mapping of buried utilities, conduits and infrastructure where records may be incomplete or unavailable.
Survey data is acquired along profiles or grids and processed into continuous sections or models. Interpretation focuses on identifying changes in material properties, enabling clear and practical outputs that support engineering decision-making.
Our experienced geophysical survey specialists work closely with engineers and project teams to design investigation strategies tailored to site conditions, risk profiles and engineering objectives. Speak directly with a geophysicist to discuss your project.
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