How do they get the construction cranes up the sides of buildings as they increase the height of the building?

As a building gets taller, the crane is raised. How is this done? And when the building is done, how do they get the crane back down?

One Response to “How do they get the construction cranes up the sides of buildings as they increase the height of the building?”

  1. freakboynv2008  on July 14th, 2013

    they use a process called jumping. iron workers use a special fixture to unbolt the tower and lift the crane up high enough to slide in another section and bolt it down. breaking down of the crane goes in reverse order.

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