Exam (elaborations)
Mass Hoisting 1B Questions and Answers 100% Correct
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Exam of 4 pages for the course Mass Hoisting at Mass Hoisting (Mass Hoisting 1B)
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Mass Hoisting 1BWhere shall hand signals for the machine in use be posted? - answerOn the jobsite
Where is it best to connect slings to lift boom sections? - answerEnd fittings
All manufacturers load charts and operations manuals shall be kept: - answerOn the
machine
When shall wire rope be taken out of service if it is used as running rope for hoisting? -
answerSix randomly distributed broken wires in one rope lay.
OR
Three broken wires in one strand in one rope lay.
What is the major reason for mobile crane accidents? - answerImproper crane set-up
What happens to the jib capacity as the jib angle to ground increases? -
answerIncreases
When first lifting the boom off the ground, which position should the gantry be in? -
answerHighest
When dismantling a lattice crane boom, which pins should be removed first? -
answerBottom
The distance from the center of rotation of the crane to the center of a freely suspended
hoist line is called? - answerRadius
What is the term called when the ultimate strength of an object is divided by the safe
working load for that object? - answerSafety factor
The point about which a crane tips is called? - answerTipping axis
What percentage of tipping is a crawler crane's stability rated at? - answer75%
On a lattice boom crane, what is a fixed A-frame called that is located at the top of the
superstructure which has the boom cabled attached to it? - answerGantry
On a lattice boom crane what is a picoting A-frame which is at the base of the boom and
has a fixed angle with the boom called? - answerLive mast
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