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2 cards from this section. Quick, good the night before a test.
What is a tower crane?
Think about where you typically see cranes in construction.
Why are crane range diagrams important?
Consider safety and efficiency during crane operations.
What does a crane range diagram represent?
Consider what aspects of the crane's operation are depicted in a diagram.
True or False: The height of a bottom slewing tower crane is unlimited.
Think about what is required for a crane to reach high elevations.
A construction site requires a tower crane to lift a maximum load of 4 tons at a distance of 25 meters. The wind speed is forecast to reach 60 km/h. Determine if the crane can safely operate under these conditions.
Check both the range diagram and known safety limits concerning wind.
You have a bottom slewing crane capable of lifting 3 tons at 10 meters radius. Calculate how much weight it can lift if positioned 12 meters away from its base.
Consider how the lifting moment alters as the radius increases.
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