Scan Before You Cut: How GPR Can Help With Void Detection

There are several ways GPR can help with void detection. Check out this infographic to learn more:

GPR Excels at Complex Subsurface Void Detection Tasks

Ground-penetrating radar (GPR) has shown itself to be a versatile resource for detecting subsurface voids. It can perform routine tests like exploring empty spaces beneath a residential property that reflect pipes and tanks, as well as voids underneath the concrete foundation. Tests have determined that, in complex city environments, skillfully-interpreted GPR is often the best resource for exploring voids beneath the remains of previous construction.

Knowing About Man-Made and Soil Movement Voids is Critical

Undocumented, unlisted underground spaces can complicate your projects, adding cost and risk. Moreover, with some soil types, ground movement from year to year can be substantial. The displacement can be enough to move and crack foundations and create new voids underground, as well as rifts in the surface. Digging without full knowledge can be problematic, and relying on solid ground for emplacement of concrete, piping, and other underground structures can be unsuccessful if weaknesses from nearby voids are not taken into account.

Voids Can Present Tank Contamination or Utility Disruption Hazards

Irregularities detected by GPR can represent hazardous material tanks, utility lines, undocumented pipes, or buried structures that are part of an adjacent building. It’s important to avoid the consequences of disrupting these structures and producing spills, outages, or damage.

Not Just for Cutting, But Placing Heavy Equipment

Heavy equipment can crush the surface layer covering a void and require equipment retrieval and remediation. For larger projects, the effects could be catastrophic, such as the unexpected construction crane movement. Even transit over unstable ground can add danger, resulting in additional time and expense for the project. Without subsurface condition information, the activity of personnel and even lighter equipment is risky.

GPR Is Your Ally in Effective and Lower-Risk Construction Practices

Surveys by GPR One Call fill in the gaps of information on the underground characteristics of the client’s area of interest or work. Accurate, high-quality results are the product of their sophisticated equipment, careful frequency choice for the highest resolution and deepest scan penetration, and most of all, their experience in interpreting scans. Before proceeding with a project or making assumptions about a piece of land and its underground characteristics, consult with GPR One Call to become fully informed.