Heavy Equipment Operator Certification Exam Prep · Question
A typical excavation project requires moving 100 loose cubic metres (LCM) of material. If the soil has a swell factor of 25%, how many bank cubic metres (BCM) did the excavation originally comprise?
To find the Bank Cubic Metres (BCM) from Loose Cubic Metres (LCM) given a swell factor, use the formula: BCM = LCM / (1 + Swell Factor). So, BCM = 100 LCM / (1
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Question: A typical excavation project requires moving 100 loose cubic metres (LCM) of material. If the soil has a swell factor of 25%, how many bank cubic metres (BCM) did the excavation originally comprise?
Answer options: ✅ 80 BCM
- 75 BCM
- 100 BCM
- 125 BCM
Correct answer: 80 BCM
Explanation: To find the Bank Cubic Metres (BCM) from Loose Cubic Metres (LCM) given a swell factor, use the formula: BCM = LCM / (1 + Swell Factor). So, BCM = 100 LCM / (1 + 0.25) = 100 / 1.25 = 80 BCM. This reflects the original volume of material before excavation.
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