Exam (elaborations)
1B mass hoisting Questions and Answers 2024
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Exam of 6 pages for the course mass hoisting at mass hoisting (1B mass hoisting)
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1B mass hoistingWhat is the leading cause of death in crane work? - answer Electrocution
What can you exceed the cranes load range? - answer Never
What OSHA Regulation govern crane operations? - answer1926.550
What ASME Regulations govern crane operations? - answerB30.5
What is OSHA's definition of a crane's function? - answer To hoist and swing loads at
various radii
Whats is the most common maximum crane loading safety factor? - answer85%
Why do we need standards? - answerTo assure that everyone goes home in the same
condition they came in
Which condition is an example of "structural" failure? - answer When the boom breaks
What percentage of tipping is a crawler cranes stability rated at? - answer75
The point at which a crane tips is called - answerTipping axis
According to Massachusetts regulations as it pertains to hoisting equipment devices to
prevent the boom from falling over backward shall be considered adequate for this
purpose? - answerFalse
What are two main factors that limit the capacity of modern day cranes -
answerStructural strength and stability
What is the major reason for most mobile crane accidents? - answerPoor operation
When are you required to use cranes outriggers? - answerWhen the operators manual
or load chart specifies that you need them
Under what circumstances can you lift the crane off the ground with the outriggers? -
answerWhen the operators manual says you can
Can a boom bend(deflect) under normal operating conditions? - answerYes
What does swing mean? - answerTo rotate the upper structure of the crane
, If a hydraulic hose ruptures, should you expect the boom to come crashing to the
ground? - answerNo
What is the minimum wraps of line that OSHA says that you must have on the drum? -
answer2
What does a swing break do? - answerIt stops the upper structure from rotating
According to Massachusetts regulations as it pertains to hosting equipment each crane
shall be equipped with a mechanism which will cause the boom swing to be -
answerStarted and stopped in a manner sufficiently gradual to prevent damaging effects
of torsion on the crane
It is not specifically required that an operator is to be protected with a cab when
exposed to overhead hazards - answerFalse
What does it mean to two-block a crane - answerTo run the load block into the boom tip
sheaves(upper block)
The rated capacity of each load hook is - answerStamped on the hook
What is one lay of rope? - answerThe length of rope measured by one turn of the strand
What is the minimum number of broken wires that will condemn a running rope? -
answer3
If a running rope gets crushed, is it out of service? - answerYes, Always
How far can a hook twist before it gets condemned? - answer10%
How big should a boom tip sheave be? - answer18 times the diameter of the rope
If a load is lifted using a 4 point sling how much of the weight is carried on each leg? -
answerOne third of the weight
What's the basic rule of thumb when using wire rope clips? - answerNever saddle a
dead horse
If a rope has a CBS of 15,000 lbs and a design safety factor of 5, what is it's capacity? -
answer3,000 Lbs
When attaching clips to a wire rope you should..... - answerNever stagger the clips and
ensure that the u-bolt of all clips are on the dead end of the wire rope
What is the term called when the ultimate strength of an object is divided by the safe
working load of that object? - answerSafety factor
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