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Old November 21st, 2009, 10:29 PM   #11721
xlchris
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Yep, it will look stunning! And I guess we don't have to wait long since they're realy making progress right now
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Old November 21st, 2009, 10:48 PM   #11722
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Looks like Manitowoc on the southwest corner of the site is done...
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Old November 21st, 2009, 11:29 PM   #11723
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Thanks Hightech Pro! Your picture makes it much clearer.
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Old November 21st, 2009, 11:43 PM   #11724
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Quote:
Originally Posted by DinoVabec View Post
Looks like Manitowoc on the southwest corner of the site is done...
Yeah, and they are wasting NO time in getting it out of there. It just lowered the final beam into place in that corner just a little while ago and they already started disassembling it. It's like they have to pay for it by the hour, lol.
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Old November 21st, 2009, 11:47 PM   #11725
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here is todays links to todays pics! I dont know why everytime i try to upload a pic it gives me x's

http://www.flickr.com/photos/4391397...n/photostream/
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Old November 21st, 2009, 11:49 PM   #11726
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i know there is a new crane supposed to come to freedom tower soon where will it be exactly and when should it get here. question 2 will both of the big reds be taken down like they are doing at the memorial soon or will they stay the whole time
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Old November 21st, 2009, 11:55 PM   #11727
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Quote:
Originally Posted by westmc9th View Post
i know there is a new crane supposed to come to freedom tower soon where will it be exactly and when should it get here. question 2 will both of the big reds be taken down like they are doing at the memorial soon or will they stay the whole time
If 1WTC reaches a certain height the manitowocs will be pretty useless, so I doubt they will be staying there after they reached the office floors. Maybe they are going to use them for other construction issues.
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Old November 22nd, 2009, 12:46 AM   #11728
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I think that one or both of the red cranes will be shifted to the PATH hub once the base of the tower is finished, but I'm not sure.
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Old November 22nd, 2009, 12:58 AM   #11729
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Nov.21













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Old November 22nd, 2009, 01:10 AM   #11730
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Amazing closeups!!!

Thx for sharing!
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Old November 22nd, 2009, 02:38 AM   #11731
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Amazing process!!!

But I think there is no optimal planning of cranes work. They erected too early two not enough powerful to lifting 70t columns Favelle Favco cranes... Therefore at present we see there Manitowoc crawler cranes with powerful engines which need many litres of fuel per day . These cranes are very useful at industrial construction works. But here they are too slow and bulky.

I suppose that more effective way in construction of such skyscrapers bottom part, which consist of massive construction elements, is to use powerful tower cranes like Liebherr 5000HC http://www.liebherr.com/cc/en/produc...ister=1249_330 or Kroll K-10000 http://www.impact-enterprises.com/photo/0317031h.jpg . I think such cranes could work more fast than crawler ones, and they are less energy consumable . Also I suppose that erection time for such tower cranes is more short...

When bottom heavy part of skyscraper is finished, then Favelle Favco (or more economical and safe IHI JCC cranes) could be erected on the top of building using above powerful tower cranes.
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Old November 22nd, 2009, 03:26 AM   #11732
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Comparison!

ORIGINAL WTC:

image hosted on flickr


image hosted on flickr


NEW WTC:



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Old November 22nd, 2009, 04:07 AM   #11733
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Thanks for the pics Jwalas! Looking sharp!
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Old November 22nd, 2009, 04:17 AM   #11734
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On these pics the original WTC steelwork looks a lot stronger than the current WTC1. But they were using old techniques, no diagonals, and less concrete obviously.
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Old November 22nd, 2009, 05:23 AM   #11735
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Far out, I knew the original WTC was raised, but I didn't think it was that much!!
I think there was no concrete at all in the twin towers, except for floors.

nobody can complain about the new one going slow any more now!
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Old November 22nd, 2009, 08:16 AM   #11736
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Quote:
Originally Posted by Hightech Pro View Post
On these pics the original WTC steelwork looks a lot stronger than the current WTC1. But they were using old techniques, no diagonals, and less concrete obviously.
And the steel was only bolted; no welding. Looks can be deceiving.
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Old November 22nd, 2009, 09:19 AM   #11737
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Still, it looks pretty massive, and gives a whole new appreciation of the amount of force it took to bring them down. Are these photos on the web somewhere? I'd like to look at the original underconstruction.
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Old November 22nd, 2009, 09:39 AM   #11738
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Dont forget that the old twins used lightweight trusses for each floor to save weight and money. Trusses are perfectly fine but not when a plane hits the building at 600mph. The trusses were the real weak point in the old buildings along with how they were attached. This tower is gonna have lots of beams holding up the floors which are a lot heavier and stronger than trusses, and along with welded joints, and a concrete core. This building is much stronger than the old twins with these changes, but I think the old design with those hundreds of perimeter columns with these changes would be the strongest design of all. Since thats not happening though this design is still a lot stronger than the old one.

Last edited by boss-ton; November 22nd, 2009 at 09:54 AM.
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Old November 22nd, 2009, 10:13 AM   #11739
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Jesus, the original twins were HUGE. Thanks for sharing!

And progress has really picked up a lot. Notice how the "slow" trolls have vanished?

..I so jinxed that.
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Old November 22nd, 2009, 11:30 AM   #11740
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Quote:
Originally Posted by Bohdan Astro View Post
Amazing process!!!

But I think there is no optimal planning of cranes work. They erected too early two not enough powerful to lifting 70t columns Favelle Favco cranes... Therefore at present we see there Manitowoc crawler cranes with powerful engines which need many litres of fuel per day . These cranes are very useful at industrial construction works. But here they are too slow and bulky.

I suppose that more effective way in construction of such skyscrapers bottom part, which consist of massive construction elements, is to use powerful tower cranes like Liebherr 5000HC http://www.liebherr.com/cc/en/produc...ister=1249_330 or Kroll K-10000 http://www.impact-enterprises.com/photo/0317031h.jpg . I think such cranes could work more fast than crawler ones, and they are less energy consumable . Also I suppose that erection time for such tower cranes is more short...

When bottom heavy part of skyscraper is finished, then Favelle Favco (or more economical and safe IHI JCC cranes) could be erected on the top of building using above powerful tower cranes.
They want american cranes on the site...
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