Crane Operator Certification Exam Prep · Question
What is a key observable characteristic of a right ordinary lay (or right regular lay) wire rope?
In a right ordinary lay (also known as right regular lay) wire rope, the wires within each strand are laid in an opposite direction to the lay of the strands th
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Question: What is a key observable characteristic of a right ordinary lay (or right regular lay) wire rope?
Answer options:
- The wires in the strands and the strands around the core all spiral to the left.
- The wires in the strands and the strands around the core all spiral to the right. ✅ The wires in the strands spiral to the left, and the strands around the core spiral to the right.
- The wires in the strands spiral to the right, and the strands around the core spiral to the left.
Correct answer: The wires in the strands spiral to the left, and the strands around the core spiral to the right.
Explanation: In a right ordinary lay (also known as right regular lay) wire rope, the wires within each strand are laid in an opposite direction to the lay of the strands themselves around the rope's core. Specifically, the wires spiral to the left, while the strands spiral to the right. This construction is common for general crane usage, offering good balance between flexibility, abrasion resistance, and resistance to kinking and unwinding.
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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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