Engineeringlopnik question

"Kate's Dirty Sister" (KDS) 01/30/2015 at 19:00 • Filed to: None

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When they build an high rise building, theres always a crane athe the top. How do they get the crane back on the ground when the building is finished.

My best guess is that they disassemble the crane and send it down through the unfinished elevator shafts.

Sportwägen, Driver Of The Red Sportwagen > Kate's Dirty Sister 01/30/2015 at 19:01

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How? Very carefully, that's how!

Arch Duke Maxyenko, Shit Talk Extraordinaire > Kate's Dirty Sister 01/30/2015 at 19:01

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in pieces

Kate's Dirty Sister > Sportwägen, Driver Of The Red Sportwagen 01/30/2015 at 19:03

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by the elevator shafts ?

Argent > Kate's Dirty Sister 01/30/2015 at 19:05

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The reverse of this:

Steve in Manhattan > Kate's Dirty Sister 01/30/2015 at 19:06

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Given where I live, I should know the answer to this. And I can't walk under those things - gives me the willies.

aberson Bresident of the FullyAssed Committe > Kate's Dirty Sister 01/30/2015 at 19:06

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they put wings on them and cover them in feathers

Kate's Dirty Sister > Argent 01/30/2015 at 19:11

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i see plenty of things being dropped from above, but by what, a fucking chopper ?

ranwhenparked > Kate's Dirty Sister 01/30/2015 at 19:12

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Usually, the cranes are used to take themselves apart and the pieces are lowered to the ground externally via a cable system.

Kate's Dirty Sister > ranwhenparked 01/30/2015 at 19:17

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so they are being lowered from the outside of the building ?

Spoon II > Kate's Dirty Sister 01/30/2015 at 19:18

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Depending on the size, you could definitely use a chopper. Many large buildings have a permanent, albeit, smaller crane on the roof, which could possibly also lower the crane pieces.

Kate's Dirty Sister > Spoon II 01/30/2015 at 19:20

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like the thing they use to wash the windows ?

ranwhenparked > Kate's Dirty Sister 01/30/2015 at 19:23

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At least the bigger components, yes. They rig up a kind of gantry system that hangs over the side of the roof and winches them down to the street.

Kate's Dirty Sister > ranwhenparked 01/30/2015 at 19:33

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thanks for the info !

I was walking downtown with my buddy from work and theres like 6 50 stories + buildings under construction in the same area and we were wondering how they would get those cranes down.

Spoon II > Kate's Dirty Sister 01/30/2015 at 20:04

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Nah, some actually have dedicated heavy lifting cranes. But back to the chopper thing, they use heavy lift choppers to put all kinds of things on top of buildings. Most notably, large AC units.

OPPOsaurus WRX > Kate's Dirty Sister 01/30/2015 at 20:14

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I think they are either disassembled and lowered by the thing they use to operate the window washer platform or they bring it a mobile crane. yoy should see them assemble one. They use a hydraulic section to raise the crane body the crane inserts a new tier section and they attach it and it is a level taller

ADabOfOppo; Gone Plaid (Instructables Can Be Confusable) > Kate's Dirty Sister 01/30/2015 at 20:27

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Lots of swallows swoop in to help as they migrate...

desertdog5051 > Kate's Dirty Sister 01/30/2015 at 21:02

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Argent is correct. They assemble/disassemble themselves.

desertdog5051 > Argent 01/30/2015 at 21:03

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You are correct.