A tower crane is usually located at the optimal position for handling the heavy and bulky materials, and its jib should cover all of the parts of the buildings on the construction site to transport the material.
A corridor is created in which the crane is lifted using a hydraulic cylinder at the base, using a steel beam to make it sturdier. The crane constructs the building around itself, moving from one floor to the next until it gradually reaches the top.
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111 west 57th street a supertall residential skyscraper on Billionaire’s Row in Manhattan .
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