Heavy Equipment Operator Certification Exam Prep · Question
An excavator loads a truck with 12 buckets. Each bucket holds 2.25 cubic metres (BCM). If the swell factor of the material is 30%, what is the total loose cubic volume (LCM) loaded into the truck?
First, calculate the total bank cubic volume (BCM): 12 buckets * 2.25 BCM/bucket = 27 BCM. Then, convert to loose cubic metres (LCM) by applying the swell facto
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Question: An excavator loads a truck with 12 buckets. Each bucket holds 2.25 cubic metres (BCM). If the swell factor of the material is 30%, what is the total loose cubic volume (LCM) loaded into the truck?
Answer options:
- 27 LCM ✅ 35.1 LCM
- 20.7 LCM
- 30.8 LCM
Correct answer: 35.1 LCM
Explanation: First, calculate the total bank cubic volume (BCM): 12 buckets * 2.25 BCM/bucket = 27 BCM. Then, convert to loose cubic metres (LCM) by applying the swell factor: 27 BCM * (1 + 0.30) = 27 BCM * 1.30 = 35.1 LCM. (Reference: OPSWA HEO Curriculum, Earthmoving Math Module).
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