Heavy Equipment Operator Certification Exam Prep · Question
An aggregate pile contains 350 bank cubic metres (BCM) of material. If the material has a load factor of 0.80, how many loose cubic metres (LCM) will a truck actually carry with each full load?
A load factor (typically between 0.75-0.95) converts loose cubic metres (LCM) to bank cubic metres (BCM) for calculating actual volume in the bank. It does not
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Question: An aggregate pile contains 350 bank cubic metres (BCM) of material. If the material has a load factor of 0.80, how many loose cubic metres (LCM) will a truck actually carry with each full load?
Answer options:
- 437.5 LCM
- 280 LCM
- 350 LCM ✅ Does not apply, load factor is for payload, not volume conversion.
Correct answer: Does not apply, load factor is for payload, not volume conversion.
Explanation: A load factor (typically between 0.75-0.95) converts loose cubic metres (LCM) to bank cubic metres (BCM) for calculating actual volume in the bank. It does not convert BCM to LCM. Swell factor (1 / load factor - 1) converts BCM to LCM. Therefore, load factor does not apply for this direct volume conversion. (Reference: OPSWA HEO Curriculum, Earthmoving Math Module, Load Factor vs. Swell Factor).
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