CASE STUDY CHALLENGE VACUUM EXCAVATIONSafely dig 1.8 yards, 1 per truck. Measure time it takes for each truck to complete. 4 by 4 feet wide 3 feet deep OBJECTIVE 2 per truck, over 10 years of experience OPERATORS It has been long debated within the vacuum excavation industry that the process used by hydro vacs produces the fastest and most efficient rates of excavation when compared to dry vacs. But with the introduction of European high-velocity fan power to a market comprised typically of positive displacement blowers manufactured in North America, that age-old debate has taken a new turn. The majority of dry vac equipment known to Canada and the US, ranges in air flow strength anywhere from 300 to 1,500 cubic feet per minute (CFM), so it’s easy to conclude that the air flow is not s

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