Our Ground Penetrating Radar Department
Ground Penetrating Radar (GPR) introduces radio waves into the subject material using an antenna which can be handheld, cart or vehicle mounted and allows non-destructive analysis of structural and buried features. We combine pulse and stepped frequency antennas with GNSS or total station positioning to provide a complete solution to your site requirements.
We have a dedicated GPR Department that focus on one sole task, ground penetrating radar. This means that we can ensure that the latest technology, survey acquisition, data analysis and training are considered whilst operating efficiently and safely. We can maintain high efficiency, quality and workflow to deliver outstanding results.
The GPR Department recognise that when planning, building or renovating structures and infrastructure, there are countless hazards that require consideration prior to excavation, core drilling and saw cutting. Choosing not to survey before intrusive works can impact on safety performance, project schedule, design and have finance implications.
Our GPR Department offers a wide range of surveying and consultancy services to Local Authorities, Civil Engineering, Building Contractors, Major Utility Providers and the Aviation Industry. We carry out small to large scale surveys and can incorporate all data to produce models, reporting and achieve industry specifications.
Utility Detection & PAS 128
Our GPR application is used in conjunction with our EML Department. Both electromagnetic location and ground penetrating radar are used to detect each utility within the survey boundary. Each detection method is recorded geospatially, and data compared against each other and existing utility records. By evaluating this data, a clearer understanding and parameters of confidence can be established. Primary focus is to fulfil M1P-M4P survey methods.
PAS 128:2014 Specification for underground utility detection, verification and location can be obtained from the British Standards Institution.
When considering the cutting, coring or drilling of concrete it is important to evaluate what may be hidden within the material. This most commonly consists of reinforcement, post tension cables and conduits. Damaging the internal structure of concrete can be costly to repair, have an impact on a project schedule and create safety hazards on site.
Assessment of this nature can also detect slab thickness, signs of voiding, erosion and degradation that are undetectable from the surface. This can provide a valuable insight and focus areas that require remediation.
GPR can be utilised for asphalt thickness evaluation and be collected at highway speeds, eliminating the need for road closures and traffic management. Large volume surveys of Pavement layer thickness can be captured and used to assess areas requiring remediation or as a quality check procedure for newly laid networks.
Bridge Deck Inspection – Condition Assessment
Collecting reliable and quantitative data of bridge decks allows for areas of deterioration to be highlighted. Our survey can assist in evaluating pavement thickness, damage, cover to top layer of reinforcement etc.
Large Scale Feasibility Study
We offer the opportunity to capture data on a large scale. Covering kilometres of road network, it is possible to evaluate utilities, structures and pavement layering with a data set that can be useful for the entire lifespan of a construction project. Identifying areas for further survey works, potential clashes with the proposed design, inconsistencies in current records, clear space and the presence of unknown infrastructure such as culverts that can affect the installation of new utility networks.