How are cranes assembled?

[daamon]

Does anyone know?

I mean, you use a crane to construct high buildings. But how does the crane get so high in the first place? Use another crane perhaps, but then what put that one up...? And so on...

[Heywould3]

the cranes are not as high as teh buildings they put a somewhat tall one on top of the the part of the building thats built then build around it. then remove it and re build it up higher till its all done either that or the chicken built it

[daamon]

Heywould3 - That might hold for some constructions but not all. How do I know this?

Well, from where I'm working at the moment (Melbourne appears to be going through a construction boom) I can see at least nine cranes working on different buildings and, believe me, some of those crans are at least 60 stories / floors tall - one's nearly 80!

[Heywould3]

yeah ive seen some of them tall ones..

[ZAPPER]

It depends on what type of crane you are talking about. Sometimes a smaller crane is used to completly assemble a larger crane. Like a little truck crane can run around and lay out the parts and help put together a crawler crane with like a 300' boom. But most tower cranes (The ones that go straight up along side the building and have a level boom) are self raising after the initial set up. A smaller crane or more gets the mast or tower standing on it's anchor bolts and the boom and counter weights are set atop the tower. And as the building goes up the crane is jacked up the building with more tower sections added as it goes up. Depending on the size of the buildings foot print one tower crane can reach the whole horizontal surface area of a building by stragicaly placeing the crane to reach the staging area and the building area. Sometimes the crane is built inside of the foot print area to allow for more coverage or more than one crane is used on the same building.

[daamon]

Cheers ZAPPER - That removes a lot of the mystery... I'd like to see it on action...

[ZAPPER]

Cheers ZAPPER - That removes a lot of the mystery... I'd like to see it on action...

Just to tease you I have some photos of a crane that collasped. But my damb scanner is crapping out and all I get are real dark copies. I am looking into getting an all in one scanner/printer /fax in the next week or so. And then I will post the pics. I saw on the boob tube a show Modern Marvels (I think ) about a lot of cool cranes. You may be able to find a copy of the show somewhere.
Ive been around a few crane mishaps. It's funny in that when you are working with one you think that it is safe as hell. But when I watch others work with them I see all kinds of possibilities for accidents. I've run a couple of small ones, enough to know that I ain't no crane operator. Those guys make it look so easy. Hell at about 20-22 I would ride the iron and make fits (steel connections) sitting on the end of a beam, but now I don't even like being on the same job as a crane until all of the lifting is done.

[daamon]

Sounds like you lead an interesting (and lucky) life ZAPPER... The pics would be good if you can...

[gmatov]

Ditto, here.

I work on Electric Overheads, Steel Mill cranes, only 120 foot span, only up to 120 ton, but some of my manuals show what can happen when you screw up with a freestanding job.

No, absolutely, NO, sidepull. Booms are latticework, cheap pipe (OK, maybe good grade, but no heavier than the engineers say is necessary for the load.

Go like "Big Muskie", with a 300 foot boom, a bucket that would hold a dozen pickup trucks, they should make the boom a little more substantial.

For "jackup" cranes, same thing. I'll try to scan a few, if I can shrink them enough, I'll upload them.

Absolutely fantastic.

Cheers,

George

[Cobra]

If you can't shrink them down enough let me know and I'll host them for you George.

[sacajaweeda]

I'm not exactly sure but I'm pretty sure they put the feathers on last.

[BJ_M]

It depends on what type of crane you are talking about. Sometimes a smaller crane is used to completly assemble a larger crane. Like a little truck crane can run around and lay out the parts and help put together a crawler crane with like a 300' boom. But most tower cranes (The ones that go straight up along side the building and have a level boom) are self raising after the initial set up. A smaller crane or more gets the mast or tower standing on it's anchor bolts and the boom and counter weights are set atop the tower. And as the building goes up the crane is jacked up the building with more tower sections added as it goes up. Depending on the size of the buildings foot print one tower crane can reach the whole horizontal surface area of a building by stragicaly placeing the crane to reach the staging area and the building area. Sometimes the crane is built inside of the foot print area to allow for more coverage or more than one crane is used on the same building.

ussually they go up through the elevator shaft ... or central core ..

[northcat_8]

Very very cranefully.

[Shadow57]

http://science.howstuffworks.com/tower-crane.htm

Karen

[BJ_M]

biggest one in the world with complete details on how it works with pics

http://www.towercrane.com/

[makntraks]

Very very cranefully.

groaner.....

makntraks

[Doramius]

Cranes are cool. I see a lot of them around here all the time. Will be seeing more once they build Trump's Condos.

[sacajaweeda]

Trump Tower will be a nice addition to the skyline here.

[BJ_M]

how many trump towers are there ? they (he) is also building one in Toronto

[yoda313]

how many trump towers are there ? they (he) is also building one in Toronto

Hello,

Don't know but since he was going to file for chapter 11 doesn't sound like a good idea to keep building more!

Kevin

[BJ_M]

that was only the casio that filed .. for the second time ...

not the rest of what he has (which isnt really all that much except ego and bad hair - but more than what i have)

[yoda313]

Hello,

except ego and bad hair

DITTO!

And one more lousy good for nothing REALITY SHOW

Kevin

[daamon]

http://science.howstuffworks.com/tower-crane.htm

Karen

biggest one in the world with complete details on how it works with pics

http://www.towercrane.com/

Great sites. I now know how cranes are assembled. Cheers!

[sacajaweeda]

how many trump towers are there ? they (he) is also building one in Toronto

Not sure but there's one slated to be built here in Tampa soon.

[Epicurus8a]

And speaking of cranes...


Yes, I am of Irish descent. Even we can be dumb sometimes.

[sacajaweeda]

Sometimes?

(just kidding)

[BJ_M]

the very last pic there is a well known fake anyway .. look two pics above it - same position of people ....

[Doramius]

how many trump towers are there ? they (he) is also building one in Toronto

Hello,

Don't know but since he was going to file for chapter 11 doesn't sound like a good idea to keep building more!

Kevin

Wrong business. His real estate businesses are doing great. He owns a ton of various businesses. He's had a few file for chapter 11 over time, but many investors large businesses have small branches that filed bankruptcy before.

[BJ_M]

how many trump towers are there ? they (he) is also building one in Toronto

Hello,

Don't know but since he was going to file for chapter 11 doesn't sound like a good idea to keep building more!

Kevin

Wrong business. His real estate businesses are doing great. He owns a ton of various businesses. He's had a few file for chapter 11 over time, but many investors large businesses have small branches that filed bankruptcy before.

not a small branch -- in fact one of his largest branchs -- for the second time ..
http://www.smh.com.au/news/World/The-Trump-idea-of-success--bankrupt-casinos/2004/11/2...?from=storylhs

http://www.channelone.com/news/2004/11/23/ap_trump/


1.8billion in debt is no small amount ...

[Doramius]

how many trump towers are there ? they (he) is also building one in Toronto

Hello,

Don't know but since he was going to file for chapter 11 doesn't sound like a good idea to keep building more!

Kevin

Wrong business. His real estate businesses are doing great. He owns a ton of various businesses. He's had a few file for chapter 11 over time, but many investors large businesses have small branches that filed bankruptcy before.

not a small branch -- in fact one of his largest branchs -- for the second time ..
http://www.smh.com.au/news/World/The-Trump-idea-of-success--bankrupt-casinos/2004/11/2...?from=storylhs

http://www.channelone.com/news/2004/11/23/ap_trump/


1.8billion in debt is no small amount ...

Factro in how much he's worth. Then how much each business is worth. Then what type of impact does the business takes from the bankruptcy. In this Banruptcy, it had very little impact on Trump himself. He's filed fro several bankruptcies on businesses. I think the amounts will astound you more if you were to add them all together.