GPR Surveys
Ground penetrating radar surveys to detect buried services, voids, structures and reinforcement, non-destructively, beneath the surface.
What it is
Ground penetrating radar (GPR) sends radio waves into the ground and reads their reflections to reveal what’s buried below, including non-conductive services that electromagnetic methods can miss, such as plastic pipes and ducts.
GPR is a core part of our utility detection toolkit and is also used to locate voids, foundations, rebar and other subsurface features.
What’s involved
Site assessment
We assess ground conditions and select the appropriate antenna frequency.
GPR scanning
Systematic grid scans build a picture of subsurface reflections.
Interpretation
Our surveyors interpret the data, correlating with other detection methods.
Mark-up & reporting
Findings are marked on site and/or delivered as a survey drawing.
What you receive
- Detected features marked on site or in CAD
- Integration with PAS 128 utility surveys
- Depth estimates where conditions allow
- Survey report with interpretation
- Radargram data on request
Where it’s used
Utility detection (especially non-metallic services), void and structure location, concrete and reinforcement scanning, and pre-excavation safety checks.
Standards & compliance
Used as a detection method within PAS 128 surveys. Results depend on ground conditions, which we always report transparently.
Common questions
Performance varies with ground type, clay and saturated soils reduce penetration. We assess conditions on site and combine GPR with other methods for the best result.
Related services
Measured Building Surveys
Accurate floor plans, elevations and sections of existing buildings, the reliable record you need for refurbishment, extension, planning or asset management.
As-Built Surveys
Verification surveys of completed works, confirming what was actually built, where, and to what level, for handover, records and compliance.
PAS 128 Utility Surveys
Underground utility surveys carried out to the PAS 128 specification, with every service classified by survey quality level so you know exactly…
