Ground Penetrating Radar
Structural investigations provide critical insight into the condition, configuration, and integrity of existing assets without the need for extensive intrusive works. Using non-destructive geophysical techniques, we support assessment and investigation of buildings and civil infrastructure to assist with structural modification, rehabilitation, asset management, and ongoing condition evaluation.
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How Geophysics Supports Structural Investigations
GBG Group Australia provides specialist structural investigation services using non-destructive geophysical techniques to assess the condition, configuration, and integrity of existing structures and infrastructure. Our investigations support engineers, asset owners, and contractors by providing critical information on concealed structural elements, subsurface defects, and building fabric conditions that may influence structural performance, rehabilitation, and redevelopment works.
Non-destructive testing techniques are applied to concrete, masonry, timber, and pavement structures for the assessment of buildings, tunnels, bridges, roads, and other civil infrastructure assets. Such investigations support forensic engineering investigations by identifying concealed structural elements, deterioration, voiding, and other anomalies relevant to structural integrity testing, remediation planning, modification works, and long-term asset management.
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Methods
We utilise the following non-destructive test methods:
Covermeter Surveys
Rebound Hammer Testing
Ultrasonic Pulse Velocity
Ultrasonic Pulse Echo Tomography
Impact Echo
Slab Impulse Response
Half-Cell Potential
Concrete Resistivity
Photogrammetry
Thermography
Endoscopy
Visual Condition Mapping
Pile Integrity Testing
Parallel Seismic Testing
Downhole Magnetometer Survey
Material Sampling and Testing
Applications
Reinforcement, Post-Tensioning and Embedded Feature Detection
Detection and mapping of reinforcement, post-tensioning systems, conduits, and embedded structural features within concrete elements to support structural modification, cutting, coring, and asset assessment works.
Structural Condition and Defect Assessment
Assessment of structural elements to identify subsurface defects, voiding, delamination, deterioration, and other conditions that may impact structural performance, durability, and ongoing asset management.
Bridge, Wharf and Civil Infrastructure Investigations
Characterisation of structural and subsurface conditions associated with bridges, wharves, tunnels, retaining walls, and other civil infrastructure assets to support assessment, rehabilitation, and infrastructure management.
Pavement, Slab and Foundation Investigations
Assessment of pavement, slab, and foundation conditions to support structural assessment, load verification, redevelopment, and construction planning works.
Pile Integrity and Foundation Investigations
Investigation of piles and foundation conditions to assess pile continuity, foundation depth, potential defects, and unknown foundation characteristics.
Heritage and Existing Structure Investigations
Investigation of heritage structures to support structural assessment, refurbishment, modification planning, and improved understanding of concealed construction details while minimising impact to sensitive assets.
FAQ’s
Structural investigations are commonly undertaken for condition assessment, refurbishment, redevelopment, asset management, and forensic engineering investigations across buildings, bridges, tunnels, wharves, pavements, and other civil infrastructure assets.
Yes. Non-destructive testing techniques can be used to identify reinforcement, post-tensioning systems, embedded features, and potential voiding within structural elements without the need for extensive intrusive investigation.
The most appropriate method depends on the structure type, investigation objectives, material properties, and required depth or resolution. In many cases, multiple techniques are used together to provide complementary information and improve interpretation confidence.
Non-destructive testing methods do not replace intrusive investigations but provide continuous information between investigation points and often reduce the need for extensive destructive testing. These methods are commonly used to guide targeted intrusive works and improve understanding of structural conditions.
Typical requirements include structural drawings if available, investigation objectives, known construction details, and any previous inspection or condition assessment information. Access requirements, operational constraints, and safety considerations are also important for planning efficient survey delivery.
Survey duration depends on the size and complexity of the structure, access conditions, and investigation scope. Smaller investigations can often be completed within a day, while larger infrastructure or multi-asset investigations may require several days or staged works.
Deliverables typically include processed data, interpreted results, marked-up drawings or investigation plans, and engineering-focused commentary on structural conditions and identified anomalies. Reporting is tailored to the project objectives and may support remediation, modification, or asset management works.
Yes. Non-destructive testing methods are well suited to heritage and sensitive structures where minimising disturbance and preserving building fabric is important. These investigations provide valuable structural information while reducing the need for intrusive works.
In many cases, yes. Structural investigations can often be planned around operational requirements and undertaken with minimal disruption to building occupants, traffic, or ongoing site activities.
Yes. Non-destructive testing techniques can be used to assess pile integrity, estimate foundation depth, identify potential defects, and investigate unknown or undocumented deep foundation systems.
Yes. Structural investigations can provide information on slab thickness, reinforcement layout, foundation conditions, and structural configuration to support load assessment, refurbishment, redevelopment, and change-of-use projects.
Why GBG Group for Structural Investigations
GBG Group provides specialist structural investigation services using non-destructive testing and geophysical techniques to support assessment of existing buildings and infrastructure. Our approach focuses on delivering practical, engineering-focused outcomes that improve understanding of structural conditions while minimising disruption and intrusive works.
Structural Investigations for Existing Infrastructure
We undertake structural investigations across buildings, bridges, tunnels, wharves, pavements, foundations, and other civil infrastructure assets to support refurbishment, redevelopment, maintenance, and forensic engineering investigations. These investigations provide critical information on concealed structural elements, deterioration, and construction details relevant to ongoing asset management and design decision-making.
Concrete Scanning and Reinforcement Detection
Concrete scanning and reinforcement detection techniques are used to identify reinforcement, post-tensioning systems, embedded conduits, and other concealed structural elements within existing structures. These investigations support safe cutting, coring, modification works, load assessment, and structural verification while reducing the risk of damage to embedded components.
Condition Assessment and Risk Management
Non-destructive structural investigations support condition assessment and risk management by identifying deterioration, voiding, defects, and other structural anomalies that may impact asset performance and durability. This information assists with remediation planning, rehabilitation works, structural integrity testing, and long-term infrastructure management.
Survey Deliverables and Reporting
Survey deliverables are tailored to project objectives and typically include processed data, interpreted results, marked-up drawings, and engineering-focused commentary on identified structural conditions and anomalies. Reporting is designed to support engineers, asset owners, and contractors in making informed decisions regarding remediation, modification, and ongoing asset management.
4,000+ Projects Across Australia and Asia-Pacific
Our experienced geophysical survey specialists work closely with engineers and project teams to design investigation strategies tailored to site conditions, risk profiles and engineering objectives. Speak directly with a geophysicist to discuss your project.
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