Crane Operator Certification Exam Prep · Question
A rigging plan specifies lifting a 5,000 kg rectangular steel plate using a double basket hitch. Each leg of the sling in the basket hitch is rated for 6,000 kg. What is the approximate working load limit (WLL) for this specific double basket hitch configuration, assuming ideal conditions?
In a basket hitch, each sling leg supports the full weight of the load, but the sling material generally doubles its capacity when used in a basket configuratio
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Question: A rigging plan specifies lifting a 5,000 kg rectangular steel plate using a double basket hitch. Each leg of the sling in the basket hitch is rated for 6,000 kg. What is the approximate working load limit (WLL) for this specific double basket hitch configuration, assuming ideal conditions?
Answer options:
- 6,000 kg
- 10,000 kg ✅ 12,000 kg
- 24,000 kg
Correct answer: 12,000 kg
Explanation: In a basket hitch, each sling leg supports the full weight of the load, but the sling material generally doubles its capacity when used in a basket configuration. Therefore, with two legs, you have 6,000 kg/leg x 2 = 12,000 kg, assuming the angle is not less than 90 degrees. This is based on standard rigging practices and CSA Z150 guidelines.
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- 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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