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  #7141  
Old Posted Jan 12, 2010, 1:19 AM
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Quote:
Originally Posted by Bucktown718
for some reason i didn't appreciate the base height and how huge it is, but this picture changed my mind completely
It's worth another look. The base is huge, almost a building unto itself. Then when you realize that the base is only a small portion of this tower, you can appreciate the full scale of what is being built. The Towers have been gone for nearly a decade, but by the end of next year, we'll have this one topped out to remind us.


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Originally Posted by NYguy View Post
Update from morrongiello (Jan 11)

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  #7142  
Old Posted Jan 12, 2010, 2:10 AM
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^^^ yeah i can't wait to see it fully finished, but for now i want to visit the site and check how it looks in real life right in front of me.
Question: You think the first office floor will be constructed by end of this week or next week already?
     
     
  #7143  
Old Posted Jan 12, 2010, 2:11 AM
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Originally Posted by Bucktown718 View Post
^^^ yeah i can't wait to see it fully finished, but for now i want to visit the site and check how it looks in real life right in front of me.
Question: You think the first office floor will be constructed by end of this week or next week already?
Nope. The office floors probably won't start till February.
     
     
  #7144  
Old Posted Jan 12, 2010, 2:28 AM
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Nope. The office floors probably won't start till February.
Really? I though they said that they will be up to 20th floor in February o.O
     
     
  #7145  
Old Posted Jan 12, 2010, 2:42 AM
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The 20th floor is the first office floor.
     
     
  #7146  
Old Posted Jan 12, 2010, 2:48 AM
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Originally Posted by uaarkson View Post
The 20th floor is the first office floor.
OOOhhhhhh Thanks for clarifying that to me
     
     
  #7147  
Old Posted Jan 12, 2010, 2:51 AM
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Yeah, we really should have a separate sticky to explain the floor numbering for this building. No offense of course, since I wouldn't expect anyone who doesn't watch this thread daily to be familiar with it, but it's been explained like 50 times in the last few months.
     
     
  #7148  
Old Posted Jan 12, 2010, 3:03 AM
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Originally Posted by uaarkson View Post
Yeah, we really should have a separate sticky to explain the floor numbering for this building. No offense of course, since I wouldn't expect anyone who doesn't watch this thread daily to be familiar with it, but it's been explained like 50 times in the last few months.
or maybe update the first post, i think that makes the most sense

the pics are dated too
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  #7149  
Old Posted Jan 12, 2010, 3:07 AM
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It’s going to be funny seeing a picture like the one above in about twenty years from now. You really have to appreciate the complexity of this structure; it’s especially apparent at this stage.
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  #7150  
Old Posted Jan 12, 2010, 3:37 AM
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Alot of steel went up on the SW corner today.

Last edited by sw5710; Jan 12, 2010 at 3:39 AM. Reason: SW
     
     
  #7151  
Old Posted Jan 12, 2010, 4:45 AM
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Will 1WTC make use of a mass tuned damper? Just curious.
     
     
  #7152  
Old Posted Jan 12, 2010, 10:24 AM
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Quote:
Originally Posted by NYguy View Post
It's worth another look. The base is huge, almost a building unto itself. Then when you realize that the base is only a small portion of this tower, you can appreciate the full scale of what is being built. The Towers have been gone for nearly a decade, but by the end of next year, we'll have this one topped out to remind us.
Wow, good picture. Whats that wall in the lobby in front of the concrete core?
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  #7153  
Old Posted Jan 12, 2010, 2:35 PM
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Originally Posted by OneWorldTradeCenter View Post
Wow, good picture. Whats that wall in the lobby in front of the concrete core?
Probably the anti-blast wall.


Quote:
Originally Posted by Dac150
It’s going to be funny seeing a picture like the one above in about twenty years from now. You really have to appreciate the complexity of this structure; it’s especially apparent at this stage.
That's the great thing about witnessing this now.
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  #7154  
Old Posted Jan 12, 2010, 3:13 PM
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On the Earthcam´s Cam 3 it seems the be that the concrete core has reached the third floor.
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  #7155  
Old Posted Jan 12, 2010, 3:48 PM
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Originally Posted by uaarkson View Post
Will 1WTC make use of a mass tuned damper? Just curious.
I think those are more for lighter more flexible buildings that you see in earthquake country. This one probably doesn't move much in the wind.
     
     
  #7156  
Old Posted Jan 12, 2010, 7:11 PM
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Originally Posted by uaarkson View Post
Will 1WTC make use of a mass tuned damper? Just curious.
In the mast, maybe ?
That's the part that's most prone to swaying.
     
     
  #7157  
Old Posted Jan 12, 2010, 7:18 PM
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Yes, but the mast will be supported by several "cables".
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  #7158  
Old Posted Jan 12, 2010, 9:16 PM
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Quote:
Originally Posted by uaarkson View Post
Will 1WTC make use of a mass tuned damper? Just curious.
Probably. As far as I know, they are sort of the standard in supertall buildings. Unless there are other technologies out there that I haven't heard of before...
It definitely won't be in the mast.
     
     
  #7159  
Old Posted Jan 12, 2010, 9:32 PM
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Mass Tuned Damper

I'm a newbie to this site. Live in Portland, OR now.

Watching the webcams religiously; LOVE the pics being posted here.

Quote:
Originally Posted by uaarkson View Post
Will 1WTC make use of a mass tuned damper? Just curious.
There's a damper atop the Citicorp (name changed ??) building...
     
     
  #7160  
Old Posted Jan 12, 2010, 10:32 PM
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No, the name didn't change.

The original towers were two huge boxes, therefore they had a lot of wind resistance. And to make it worse, they were positioned against the winds of the harbor. Fortunately, at the top of each building there were a series of trusses which helped redistribute wind loads to less services walls of the buildings, and the core columns(They were initially supposed to support heavy antennas).

In One World Trade Center, there is a strong concrete core to withstand those wind forces and keep the building stable(concrete doesn't move anyway). There are no earthquakes(none in this lifetime) in the New York area, so that's not a factor. One thing this building has that the towers didn't have is the inward tapering. The building turns 45 degrees by the time it reaches the top, so now wind can pass freely and unobstructed around it. There is no need for dampers, since the basement floors are also made entirely out of concrete.
     
     
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