Ground Penetrating Radar

Voids - Leaks - Cracks - Compaction


GPR is a high resolution electromagnetic survey technique designed to investigate anomalies in the subsurface of the earth and surrounding infrastructure.


Applications of GPR


How to apply the best GPR requires extensive competency. SSI Test, Inspect and Consult can specify different GPR units with variable frequencies to solutions that are most suitable.


The versatility of GPR is diverse but there is no one universal GPR unit that can fit all requirements.


Our GPR surveys can provide accurate depth estimates, identify sub surface anomalies and provide 2D and 3D imagery.


Road, Rail, Tunnel and Infrastructure


Asphalt layer surveys

Identification of sinkholes

Deterioration of base road and rail ballast

Sub surface structures beneath manmade objects

Bridge foundation / footing surveys

Wall anomalies and thickness

Subsurface tunnel anomalies

The quality control of repairs – real time monitoring of the injection of specialist grouts and the latest polymer resins



Utility Location and Mapping


GPR should be considered as a complementary survey tool for utility locating and mapping:


To confirm the location of a radio detection anomaly

Improve depth estimates

Detects additional features

Location of plastic and non ferrous pipes

Locating large volume and long running water leaks

Rapid reconnaissance surveys – due to fast data collection

Internal sewer inspections and surrounding soils




Comparable to some other methods, like seismic and electrical resistivity, GPR is used to map the layering of materials, water table levels, cavities and other geological phenomenon.



GPR technology has become a valuable tool for archaeological studies and surveys. It allows for a potential site to be mapped and evaluated before the actual digging – focusing the efforts and  preserving underground artefacts.