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Old July 14th, 2011, 04:45 AM   #23981
ThrEeve
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Those perimeter columns were sure added fast... They got them all in what, half a day? Usually getting them all installed takes from 1-2 days
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Old July 14th, 2011, 05:33 AM   #23982
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Quote:
Originally Posted by Swiddle View Post
That one tree was healthy and full on June 1st and by June 12th was completely bare. Now it appears to be slowly regrowing its leaves. It's almost as if it was attacked by a swarm of locust or an infestation of caterpillars. I'd love to know what really happened.

From Memorial thread:
This is very surprising. I assumed that those trees would be equipped with some kind of automated drip irrigation system that could, when necessary deliver pesticides or fertilizer when necessary. Sort of like an iv drip for someone in the hospital.
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Old July 14th, 2011, 06:59 AM   #23983
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Are those trees native to the region?
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Old July 14th, 2011, 07:07 AM   #23984
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So how do they get those cranes down when they are finished?
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Old July 14th, 2011, 07:13 AM   #23985
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So the building is now 943 feet yes?
I think 910ish, but the cranes are (obviously) well above that
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Old July 14th, 2011, 10:42 AM   #23986
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#offtopic.

But neck and neck here. 4 votes seperating the two in the Supertalls World Cup.

http://xl.skyscrapercity.com/?page=o...erday=20110714

Chrysler Building can do with a little help if you are a regular poster on this thread.
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Old July 14th, 2011, 10:58 AM   #23987
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Will you be able to go from WTC1 to WTC4 etc. through the memorial, or do you have to go via the transit hub?
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Old July 14th, 2011, 12:30 PM   #23988
desertpunk
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image hosted on flickr

World Trade Center July Progress Update #2 by RBudhu, on Flickr
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Old July 14th, 2011, 12:51 PM   #23989
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July 13th, nycdagreatest, Skyscraperpage..

image hosted on flickr


image hosted on flickr


image hosted on flickr


image hosted on flickr


image hosted on flickr


image hosted on flickr


image hosted on flickr


image hosted on flickr


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Old July 14th, 2011, 01:11 PM   #23990
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Could someone please tell me how many rows of glass panels there will be from bottom to top (excluding the base)? At the moment it looks like they're on the 30th row.
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Old July 14th, 2011, 01:14 PM   #23991
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WOW!!!
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Old July 14th, 2011, 02:47 PM   #23992
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Quote:
Originally Posted by Kurtin View Post
#offtopic.

But neck and neck here. 4 votes seperating the two in the Supertalls World Cup.

http://xl.skyscrapercity.com/?page=o...erday=20110714

Chrysler Building can do with a little help if you are a regular poster on this thread.
Yeah! And next time we go for 1WTC for the cup!
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Old July 14th, 2011, 03:02 PM   #23993
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I wonder when they are going to fill in those spaces in the first row of cladding?
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Old July 14th, 2011, 03:09 PM   #23994
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Very good pictures, comparisons are quite amazing, in three months is more than ten floors, incredible!

PD: Question no mood to be controversial, but because if they claim that the twin towers fell from melting steel to make new steel cover of another material such as cement.
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Old July 14th, 2011, 04:22 PM   #23995
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It's been a while since I checked this thread. Nice progress!!
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Old July 14th, 2011, 05:14 PM   #23996
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Quote:
Originally Posted by WTCNewYork View Post
I wonder when they are going to fill in those spaces in the first row of cladding?
Probably not till after they clad the base. They left it open like that so they can hang scaffolding. OTOH it looks like they are constructing an external scaffolding around the base now so maybe they changed their plans.
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Old July 14th, 2011, 05:37 PM   #23997
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Maybe this was done a long time ago but I can't find it.

Can someone describe all the steps involved in the construction of new floors? We see the steel going up, but what else happens that we don't see. For example, when and how does the concrete core bet built? Is that before or after the steel girders for a floor go up? When does the concrete for the floor get laid? How does the concrete get up there? etc. etc. If someone can give or link to an explanation that will be greatly appreciated.
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Old July 14th, 2011, 05:39 PM   #23998
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When someone asks such questions i miss Zen very much. :-( He would know the answers.
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Old July 14th, 2011, 05:46 PM   #23999
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Quote:
Originally Posted by SebaFun View Post
PD: Question no mood to be controversial, but because if they claim that the twin towers fell from melting steel to make new steel cover of another material such as cement.
If you look at the floors between the glass and the safety netting you will see the fire-proof coating that is applied to all the steel in the structure. The twins had some, but it was not strong enough and never designed for the force of a plane hitting.

Here is a page that shows some early fire retardant spray on the twins during construction.
http://www.skyscrapercity.com/showthread.php?p=65918563

Last edited by Scrapernab2; July 14th, 2011 at 05:52 PM.
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Old July 14th, 2011, 07:10 PM   #24000
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Quote:
Originally Posted by 600West218 View Post
Maybe this was done a long time ago but I can't find it.

Can someone describe all the steps involved in the construction of new floors? We see the steel going up, but what else happens that we don't see. For example, when and how does the concrete core bet built? Is that before or after the steel girders for a floor go up? When does the concrete for the floor get laid? How does the concrete get up there? etc. etc. If someone can give or link to an explanation that will be greatly appreciated.
The core concrete is lagging behind the floors quite a bit. The floor beams and concrete are poured soon after the curtain wall and core erecting steel is up.

Zen probably could have told you what mine the ore for the steel came from, and who dug it up.
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