Certified Answers.
Which lay of wire rope has the strand wires in line with the rope axis? - Answer: Regular Lay
At what speed should the counterweight safeties be set to trip? - Answer: Up to 10% higher
than the car governor
Which type of safety uses an oil buffer between the car and safety planks? - Answer: Type C
What is the purpose of the terminal motion switch? - Answer: slow down and stop the car
automatically at or near the top or bottom landing
If you have a 3500 lb. car rated at 4000 lbs. capacity, how much should the counterweight
assembly weigh for a normal 40% installation? - Answer: 5100 lbs.
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, When the pit directional limit switch is actuated, the normal circuits will allow the car to run -
Answer: Up
_______should not be disassembled in the field. - Answer: Oil Buffers
The loss of traction between the hoist ropes and the machine driver when the counterweight
lands on its buffer avoids... - Answer: The elevator car being pulled into the overhead.
Refer to Table 1. With a safety factor of 5, what is the breaking strength for 1 1/8" nylon rope? -
Answer: 52,000 lbs.
Which of the following applies to rope usage? - Answer: Prevent manila rope from unraveling by
using whipping.
What does the designation 3/8" 6 X 30 improved plow steel mean? - Answer: It is a high
strength cable with 6 strands composed of 30 wires per strand?
When using Crosby clips, which of the following statements is correct? - Answer: To determine
the correct minimum spacing multiply the rope diameter times 6.
When handling and storing a freight platform, what do you need to keep in mind? - Answer:
With the platform on edge, handle it from the ends and move on rollers.
Which of the following statements is true concerning capstans? - Answer: Both b, and c.
b. Fasten the hoist to a beam or other building structure.
c. To interrupt hoisting ease off on the pulling rope
When choosing planks for hoisting, what must be considered? - Answer: Use only scaffold grade
lumber
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