tower cranes

mreeman | 16:20 Sat 10th Aug 2002 | How it Works

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how are tower cranes erected?

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The top part is constructed first at ground level then the crane builds itself by lifting itself up and a new section is inserted and so on.

If you go to How stuff works they show you how it goes together, which is by building it with a special cradle which sits under the booth.

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