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Utilities Business Review | Tuesday, February 28, 2023
It reveals the position, length, and depth of utilities, allowing workers to excavate the area safely while minimizing the danger of damage to existing infrastructure and hindrance to future development.
Fremont, CA: Potholing, also known as daylighting, is a procedure used to provide visible confirmation of subsurface facilities and impediments before proceeding with excavation. It reveals the position, length, and depth of utilities, allowing workers to excavate the area safely while reducing the danger of damage to existing infrastructure and hindrance to future development.
Potholing is drilling a series of extremely small test holes into the earth, typically 6 to 12 inches deep, to explore and accurately identify subterranean pipes, lines, and other obstructions. This process often utilizes a vacuum excavation approach and equipment to obtain the necessary verification of subsurface objects along the project's bore path.
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The vacuum excavation procedure is most typically helpful with one of two sources: water or air. Hydrovac and air vacuum excavation use highly pressured streams of water and air to soften the ground dirt and dislodge it from potholing bores using high-suction vacuum equipment. The capacity of various excavation techniques to move hard or rocky earth without accidentally puncturing or injuring the features below is a benefit.
Potholing by vacuum excavation reveals subsurface lines while keeping them completely intact. Once workers have a good view of all subsurface features, they may label them, return the removed wet or dry soil as backfill (if necessary), and use the visual understanding gained to complete their job safely.
Why start with a pothole? The following are some of the most compelling reasons to prioritize potholing before beginning the excavation and building operations for a utility construction project.
Access to Information and Insight
Before commencing a project, it is beneficial to locate subsurface utility lines accurately. Users risk colliding with crucial subsurface infrastructure, even armed with charts and utility maps (which may need to be corrected or updated). Visual verification is as precise as it gets in terms of comprehending the work environment. Potholing provides detailed information on the kind, horizontal position, and depth of underground utility lines and any damage to them. It allows employees to proceed with less danger of human harm, property damage, and service disruptions.
Hazard Mitigation for Work Crews
In terms of personal injury, statistics reveal that every year, construction workers are killed or injured while digging. Without a dependable method of locating and avoiding critical subterranean utility infrastructure, excavation operators' safety is jeopardized, particularly in the case of natural gas line strikes. Potholing with vacuum excavation, on the other hand, allows teams to discover risky infrastructure and prevent these dangers much more decisively.
Accumulated Efficiencies
It's typical to believe that potholing is an extra stage in the construction process that adds time to the project schedule. However, the reality is that this strategy can save time in the long term. When building underground infrastructure without a direct line of sight to existing features, there is always the risk of accidentally striking a line and incurring considerable disruption. This is the kind of blunder that leads to unanticipated delays in the project's timeframe. It's also worth mentioning that potholing is a much faster way to identify things than charts and maps.
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