Crane Operator Certification Exam Prep · Question
A pre-engineered lift plan requires lifting a cylindrical tank weighing 8,000 kg using a single sling in a choker hitch. The sling selected has a working load limit (WLL) of 10,000 kg in a straight pull. Considering the choker hitch efficiency factor of 0.75-0.80, and based on CSA Z150 recommendations, what is the maximum load this sling can safely lift in a choker hitch mode?
The efficiency of a choker hitch typically reduces the WLL of the sling by 20-25%. Using the lower efficiency factor of 0.75, the effective WLL is 10,000 kg * 0
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Question: A pre-engineered lift plan requires lifting a cylindrical tank weighing 8,000 kg using a single sling in a choker hitch. The sling selected has a working load limit (WLL) of 10,000 kg in a straight pull. Considering the choker hitch efficiency factor of 0.75-0.80, and based on CSA Z150 recommendations, what is the maximum load this sling can safely lift in a choker hitch mode?
Answer options: ✅ 7,500 kg
- 8,000 kg
- 10,000 kg
- 13,333 kg
Correct answer: 7,500 kg
Explanation: The efficiency of a choker hitch typically reduces the WLL of the sling by 20-25%. Using the lower efficiency factor of 0.75, the effective WLL is 10,000 kg * 0.75 = 7,500 kg. This is a critical reduction to observe for safe lifting operations as stipulated by CSA Z150.
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Question explanations
- According to most Canadian provincial regulations, who is ultimately responsible for the safe operation of a c
- A crane's rated capacity decreases as the load radius:
- What is the minimum number of full wraps of wire rope that must remain on a hoist drum when the hook is in its
- Before setting up a mobile crane, what is the most important factor to assess regarding ground conditions?
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