Loader Operator Certification Exam Prep · Question
An operator is securing a 20-tonne excavator on a float trailer. It has eight tie-down points. What is the minimum aggregate working load limit (WLL) required for the securement devices, according to CSA Standard Z150.1 for the securement of articles on vehicles?
According to CSA Z150.1, the aggregate WLL of all securement devices must be at least 50% of the weight of the article. For a 20-tonne (20,000 kg) excavator, 50
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Question: An operator is securing a 20-tonne excavator on a float trailer. It has eight tie-down points. What is the minimum aggregate working load limit (WLL) required for the securement devices, according to CSA Standard Z150.1 for the securement of articles on vehicles?
Answer options:
- 4,536 kg (10,000 lbs)
- 8,165 kg (18,000 lbs) ✅ 10,000 kg (22,046 lbs)
- 12,000 kg (26,455 lbs)
Correct answer: 10,000 kg (22,046 lbs)
Explanation: According to CSA Z150.1, the aggregate WLL of all securement devices must be at least 50% of the weight of the article. For a 20-tonne (20,000 kg) excavator, 50% is 10,000 kg. Exceeding this is good practice but 10,000 kg is the minimum requirement.
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