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how do construction crews put up a crane?

2007-06-10 10:21:58 · 1 answers · asked by LIL E 1 in Science & Mathematics ➔ Engineering

1 answers

They assemble it on a concrete foundation using a mobile crane. To grow taller, the top unit of the tower crane has a jacking mechanism that lets it raise itself up and insert another tower section.

2007-06-10 12:06:04 · answer #1 · answered by injanier 7 · 0⤊ 0⤋

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