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Structural Inventory (GPR)

Fugro is known for its nationally recognized professionals who provide technical leadership to Federal, State and local governments, as well as other organizations with a need for GPR and pavement engineering services for over 25 years. Fugro’s licensed geophysicists and experienced personnel have interpreted over 100,000 miles of GPR data for roadway networks in the past five years, which is more than any other company in the world. Our geophysicists were the first to apply GPR multi-frequency antennae to high speed pavement data collection and interpretation systems for high speed GPR data collection. This expertise has been successfully applied to the statewide GPR data collection for CALTRANS, Louisiana Department of Transportation and Development (LADOTD), and Virginia DOT (VDOT).

GPR is a powerful geophysical technique used to provide construction and condition information from the ground and for pavements, structures and buildings without damage or disruption.

The technique is:

  • Quick – continuous profiles characterize layer thickness and generate a comprehensive picture of subsurface conditions
  • Safe – the transmitted radio signals are very low powered and do not interfere with other electromagnetic systems
  • Flexible – data can be viewed as it is collected to make an initial interpretation and to adapt survey methodology
  • Highly mobile – compact and rugged instruments can be mobilized to challenging locations
  • Versatile – characterize structure and condition of multi-layered structures including most non-metallic materials
  • Accurate and reliable – the availability of powerful computer processing enables improved accuracy and confidence

GPR has been used since the 1980s to assess material thickness, structural detail and condition in a wide range of civil and structural applications including:

  • Pavements and railway trackbed
  • Concrete and masonry structures and buildings
  • Shallow ground investigation

It is used to identify:

  • Layer thickness and target depth
  • Voiding, delamination and cracking within structural materials
  • Subsurface features such as reinforcement bars, buried utilities
  • Cavities, voids and geological structure in the ground
  • Moisture variations
Download the Structural Inventory (GPR) brochure.