Heavy Equipment Operator Certification Exam Prep · Question
A construction site requires an excavation of 1,200 bank cubic metres (BCM) of earth. The soil has a swell factor of 30%, and the hauler trucks have a capacity for 15 loose cubic metres (LCM). How many truckloads will be required to remove all the excavated material?
First, convert BCM to LCM: 1200 BCM * (1 + 0.30) = 1200 * 1.30 = 1560 LCM. Then, divide the total LCM by the truck capacity: 1560 LCM / 15 LCM/load = 104 loads.
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Question: A construction site requires an excavation of 1,200 bank cubic metres (BCM) of earth. The soil has a swell factor of 30%, and the hauler trucks have a capacity for 15 loose cubic metres (LCM). How many truckloads will be required to remove all the excavated material?
Answer options:
- 80 loads
- 92 loads ✅ 104 loads
- 120 loads
Correct answer: 104 loads
Explanation: First, convert BCM to LCM: 1200 BCM * (1 + 0.30) = 1200 * 1.30 = 1560 LCM. Then, divide the total LCM by the truck capacity: 1560 LCM / 15 LCM/load = 104 loads. This calculation ensures enough trucks are deployed for the expanded volume.
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