What is the purpose of the upper limit switch the only one

What is the purpose of the upper limit switch (the only one required by OSHA)? - ANSWER-Limit the hoist travel

When any machinery or apparatus is found to be defective or inoperative on the crane, the person discovering this condition should? - ANSWER-Report it to the supervisor

When loss of power occurs, the crane operator should? - ANSWER-Put controllers in off position

An object to be lifted is rectangular in shape and measures 5' long × 3' wide x2' high. The volume of this object is? - ANSWER-30 cubic feet

A floor weight limitation is posted at 700 pounds per square foot maximum.Before lowering a load down onto this floor that is calculated at 900 pounds per square foot, what must be done? - ANSWER-Install cribbing to decrease surface bearing pressure

The term "Lay Length" when referring to wire rope is equal to? - ANSWER-The distance it takes one strand to make one 1 / 3

complete revolution around the center core

According to OSHA, rated capacity rigging charts will aid you when? - ANSWER- Determining if the rigging equipment meets all criteria established by law

If possible, always try to keep horizontal sling angles? - ANSWER-Greater than 30 degrees

Whenever a situation calls for placing both ends of a sling into a hook or placing more than one sling into a hook, what piece of rigging hardware for making this connection should be used? - ANSWER-A shackle

How can shock loading of rigging equipment be prevented?

• ANSWER-By applying loads to rigging equipment more

slowly when lifting

What are the runways on which the crane runs up and down the plant called? - ANSWER-Rails

What is the minimum safety factor for overhead crane wire ropes? - ANSWER-5 to 1

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Which of the following standards applies to overhead cranes?

• OSHA 1910.134
• ASME B30.5
• PCSA 1926.550
• ASME B30.2 - ANSWER-ASME B30.2

What type of control operation do Floor operated overhead cranes use? - ANSWER-Pendant

The term plugging refers to? - ANSWER-Reversing power for stopping

When hoisting, which position of the hoist controller will result in the slowest speed? - ANSWER-First position

One Square foot of steel Plate weighs 40 pounds per inch of thickness. What is the approximate weight of a steel plate 8 ft. long, 5 ft. wide and 3 inches thick? - ANSWER-4,800 lbs

Overhead cranes may be modified provided they are checked thoroughly by a? - ANSWER-Qualified engineer

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