how do jack up cranes work?

2007-07-08 08:08:28 · 1 answers · asked by rvbadagli 2 in Science & Mathematics ➔ Engineering

1 answers

Generally through an elevator shaft space.
One mast is raised vertical. and braced. It hauls the other mast up to the its level. The second mast becomes the boom. As the steelwork rises, one mast raises the the other, level by level.

2007-07-08 12:20:22 · answer #1 · answered by Irv S 7 · 0⤊ 0⤋

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