Murphy Surveys use a high-resolution ground penetrating radar system to safely locate embedment within concrete structures and assess the rebar layout for design and construction purposes. The depth, size and cover of the rebar and post tension cables is also mapped prior to a contractor drilling, cutting or coring in floor slabs, walls or concrete columns.
Our GPR system is the latest in structural scanning and concrete scanning technology, and can penetrate through the concrete to depths of 0-450mm. The results of the survey can be marked up on site showing the reinforcing steel locations on the work surface or processed off site to produce detailed 2D plan or 3D model drawings and written reports.
The GPR equipment can also locate voids – air gaps between the sub-grade soil and the concrete slab hidden below concrete or asphalt surfaces. This degradation occurs over time due to compaction, pipe breakages or erosion but is often undetectable on the surface. Our radar technology can help our clients locate these areas and, most importantly, avoid collapses.
Structural Scanning uses include:
- Concrete inspection – locate metallic and non-metallic targets in walls, floors etc
- Structure inspection – bridges, monuments, walls, towers, tunnels, balconies, garages, decks
- Condition assessment – map relative concrete condition for rehab planning
- Measure slab thickness
- Void location
Our highly trained technicians use the GPR equipment to accurately detect electrical conduits in commercial and industrial locations prior to renovation works on site. This reduces risk of power outages and costly damages caused by striking live cables.