Non-destructive sub-surface investigation for cost effective and reliable pre-planning of excavation and site works.

ERA Technology provides a versatile sub-surface mapping service using the SPRscan ground
penetrating radar and other complementary non-invasive geophysical surveying methods.
Surveying the structure of the sub-surface allows the location of buried objects, pipes and voids to be determined without the need for unnecessary disruption and excavation, this allows subsequent excavations and works to be planned more effectively; greatly reducing the time, effort and cost involved.

As a member of EuroGPR, ERA carries out mapping surveys for a wide range of clients including utility, civil engineering, and construction companies, architects and police forces.

Flexibility
In order to carry out investigations in different geophysical conditions, ERA offers a number of
surveying methods, primarily based on the renowned SPRscan ground penetrating radar system.

Other geophysical methods are also used including:
	metal detection		resistivity
	magnetometry		cable detection

Accurate positioning of the surveyed area is obtained using a modern total station theodolite system.

The flexibility of the survey equipment allows searches to be carried out across the ground, and against other surfaces such as walls, bridges, support pillars, etc. Each survey is tailored to the precise requirements of the client and the practicalities of the site.

Versatility
The SPRscan radar sysytem detects change in material types: and as such it is able to locate any sub surface item including non-metallic objects eg:

	voids		plastic, ceramic and concrete pipes
	buried foundations		human remains

Applications
Site survey applications include:
	location and mapping of buried utilities including conduits and cables		reinforced concrete checking
	route proving		void and cavity location
	road reinstatement checking		building/tunnel integrity testing
	archaeological surveying		forensic investigation

Surveys
Since each survey will be different, ERA will discuss the exact requirements of each survey in
advance to determine the most favourable approach to conducting the investigation. The survey service includes:

	attendance on site using appropriate survey methods		availability of a geophysicist as well as technical staff
	on-site advice and interpretation

Results
Various options are available to present the survey results including

real time ground marking for instant results enabling on-site requirements to be made regarding to be made regarding further investigation.

detailed report with area maps to enable advance project planning, quality checks, and support insurance claims or provide evidence in court