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4 cards from this section. Quick, good the night before a test.
What is hoisting in the context of cranes?
Think about what action cranes perform.
Define luffing.
Luffing relates to the boom's tilt.
What is the primary action of cranes?
Think about the main purpose of cranes.
True or False: Luffing refers to the ability of a crane to rotate.
Recall the definition of luffing.
A crane is rated to lift 20 tons. If it lifts a load of 25 tons, discuss what might happen.
Consider the relationship between load weight and crane stability.
Calculate the safe working load of a crane if the self-weight is 10 tons, counterweight is 5 tons, and the boom weighs 3 tons.
Remember to consider only the stabilizing factors minus the boom weight.
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