Those giant construction cranes used to build office buildings... how to they set them up in the first place?

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Those giant construction cranes used to build office buildings... how to they set them up in the first place?

Whenever I see office buildings going up, I see these huge cranes, taller than the buildings themselves. How do they set these cranes up without using even bigger cranes?

2006-06-29 02:09:17 · 4 answers · asked by Michael P 1 in Science & Mathematics ➔ Engineering

4 answers

They jack them from the bottom and add the section of bracing from below to make them taller.

2006-06-29 02:30:16 · answer #1 · answered by Jeffrey S 6 · 0⤊ 0⤋

They build them up section by section, using a bigger crane

2006-06-29 02:13:39 · answer #2 · answered by Anonymous · 0⤊ 0⤋

Actually they are built with the Builtup section.when they want to increase the hieght they just add up the section to get the larger sections.

2006-06-30 00:05:12 · answer #3 · answered by aakash 1 · 0⤊ 0⤋

i am also curious. its amazing.

2006-06-29 02:12:17 · answer #4 · answered by Anonymous · 0⤊ 0⤋