Why this investigation mattered
The assignment was different from a typical underground utility survey: the target was a large population of installed guardrail posts requiring consistent integrity assessment. With 550 posts, repeatability and traceable field records were more important than one-off measurements.
The project needed a workflow that could capture comparable data efficiently while still identifying posts whose response differed from the expected pattern and therefore warranted review.
Investigation strategy
Testing was organized as a repeatable production workflow. Each post was assessed using the specified dynamic measurement approach, with three channels recorded per test point to provide a consistent basis for comparison.
Results were reviewed for response quality and anomalies that could indicate differences in embedment or installation condition. The focus was on asset-level verification rather than subsurface utility mapping.
