April 26, 2023

Diagnostic tools can be used to evaluate the current condition, the cause, and the extent of distress in building and civil structure components. NOVA’s experienced technical team can interpret the results and assist the project team with cost-effective repair solutions. One example of the many non-destructive testing services that NOVA can offer is Ground Penetrating Radar (GPR) testing of concrete structures. In this featured photo, we’ve captured NOVA’s Structural/Forensics Staff Engineer on the job performing an actual GPR Test.

NOVA utilizes specialized testing equipment (like this handheld system) which locates rebar, conduits, and post-tension strands to depths of up to 16 inches (40 cm). This device, coupled with the 3D software,  is excellent in developing an x-ray like image for any given depth. Ideal for complex areas, we can delineate small targets with superior vertical and horizontal resolution. This testing is typically used to evaluate the pattern and position of reinforcing steel for structural evaluations and also to avoid damaging these critical structural components during structural modifications or utility borings. The GPR has also been successfully used to locate concrete delaminations and to verify the presence of grout and tie reinforcement in concrete masonry construction.

Photo Credit: Daniel Castillo, Staff Engineer, Structural & Forensics Engineering, Buford, GA