Our services
Locating underground services with radar & mapping them to the drawing you need, plus 3D scanning of large structures.
GPR scanning, mapping & reports
We locate underground services using ground penetrating radar (GPR) & electromagnetic locating. Positions, depths & where possible types of service are marked on the ground. Larger sites are mapped with sub-centimetre GPS & delivered as PDF & DWG drawings. Smaller sites get a written report with photos of the markings to keep unnecessary costs down.
- Method
- GPR & EML scan
- Marked
- Positions, depths & service types (where possible)
- Mapping
- Sub-centimetre GPS
- Delivered as
- PDF & DWG drawings or written report
3D LiDAR scanning
Using LiDAR scanning equipment, HD GPR creates highly accurate point clouds of large objects. The point clouds are delivered as .LAS files, a format that engineers & architects commonly use.
- Captures
- Structures, tunnels, land deposits
- Delivered as
- .LAS file format
Common questions
What is ground penetrating radar?
GPR is a geophysical method that uses radar pulses to image the subsurface. It sends electromagnetic pulses in the microwave band of the radio spectrum into the ground & detects the signals reflected from the surfaces below. It is non-destructive.
Can GPR tell me what an underground service is?
No. GPR detects a difference in density in the soil, not what the service is. That is why we scan using both GPR & electromagnetic locating equipment, which helps with thin live electrical cables & tracing services to their corresponding furniture above ground where possible.
What is electromagnetic locating (EML)?
EML equipment detects the electromagnetic field around metallic pipes, cables & other conductive services. Live electrical cables give off their own signal, which can be picked up directly. Other metallic services can be traced by applying a signal to them, either by connecting a transmitter or inducing one from the surface. This helps us find thin cables that GPR can miss & trace services to their furniture above ground, such as manholes, valves & junction boxes. EML only finds metallic or conductive services, which is why we use it together with GPR.
Do LiDAR scans look like the real thing?
No. A LiDAR scan is a point cloud made from millions of reflected beams of light. The points can be coloured to make viewing easier, but the result will not look like a photo. Professionals use it to measure large objects accurately.
Need something located or scanned?
Tell us about your site & we’ll come back to you with a quote.