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Old April 5th, 2012, 05:09 PM   #881
oli83
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Wow, the sliding crane seems to accelerate the steel erection speed. Lots of new steel pieces delivered (including two very tall pieces), and many already put in place, the northeastern corner is shaped pretty well already
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Old April 6th, 2012, 03:09 PM   #882
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The structure that I assume was the work crew access elevator has been removed...wonder how the workers are getting to the work levels.

I hope the small spur at the northeast corner of the moveable crane can clear the new pylon they are constructing. It sure looks to be very close, at least from the perspectives available.
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Old April 9th, 2012, 10:23 AM   #883
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B2 Balcony

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Old April 9th, 2012, 05:57 PM   #884
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Looking at the web cam this think is really flying now.

It looks like the central transit hall will be no wider than the sliding crane, correct?

In that case it actually isn't very big. Very nice, but nothing like Grand Central in terms of size.
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Old April 10th, 2012, 01:33 AM   #885
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from http://www.huffingtonpost.com/2012/0...=WTC_Path_Hall

Question for the construction engineers:
Will those two huge new columns be filled (or encased) with concrete?
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Old April 10th, 2012, 07:23 AM   #886
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They're elevators that will connect Dey Street Concourse level (lower) with the R/W Cortland Street underpass (upper).
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Old April 10th, 2012, 11:03 PM   #887
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Quote:
Originally Posted by Otie View Post
They're elevators that will connect Dey Street Concourse level (lower) with the R/W Cortland Street underpass (upper).
Oh.. didn't seem so big to be elevator shafts..

Nice rendering btw!
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Old April 11th, 2012, 10:16 PM   #888
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First of the major support beams up on the south side. This thing is just flying now and is the most excisting part of the WTC to watch. With the cam we can see everything.

The only thing is that this really looks small and cramp. It certainly isn't very wide.
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Old April 12th, 2012, 12:41 AM   #889
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Quote:
Originally Posted by 600West218 View Post
First of the major support beams up on the south side. This thing is just flying now and is the most excisting part of the WTC to watch. With the cam we can see everything.

The only thing is that this really looks small and cramp. It certainly isn't very wide.
It does appear to be very slim. I was expecting something with a little more girth. I'm sure the final product will be much more impressive in person. With steel work going so fast here and at the VSC site, we should finally see every part of the WTC complex built to grade. Finally!!

FYI, here are the dimensions of the oculus,

"the Oculus -- the Hub's main public space, officially called the Transit Hall -- is 350 feet long and 145 feet wide at floor level, which is two levels below the street. It tapers to a "mere" 320 feet long by 100 feet wide when it reaches street level. At its tallest point, the Oculus is 160 feet tall from the floor to the skylight roof. "

We should update the thread title. Unless the PA has valued engineered this some more..

Last edited by spectre000; April 12th, 2012 at 12:48 AM.
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Old April 12th, 2012, 02:54 AM   #890
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I'd say the oculus and GCS are close:
"The Main Concourse is the center of Grand Central Station. The space is 275 ft (84 m) long, 120 ft (37 m) wide and 125 ft (38 m) high"
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Old April 12th, 2012, 03:37 AM   #891
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Quote:
Originally Posted by spectre000 View Post
With steel work going so fast here and at the VSC site, we should finally see every part of the WTC complex built to grade. Finally!!
I was thinking that exact thing today. For a long time this complex was known as being a big "hole in the ground". And even as recently as a couple of years ago the entire WTC 2 & 3 parts were at bedrock with puddles of water. Now looking at the web cams there is no hole in the in the ground any more at all

I think this transportion hub will be very impressive on the outside with the soaring ribs but not so impressive on the inside. It won't be a new Grand Central or old Penn Station. Nice, but not a standout, at least on the inside. I almost wish they had configured the site a bit differntly (and lost the street running through it) so that they could have made this a bit bigger.

But, it will still be great fun watching it go up.
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Old April 12th, 2012, 07:13 AM   #892
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Agreed, it will look small once you get down to the Hall, but the light being fractioned by the soaring ribs will be quite touching and impressive.



vs. Grand Central




Quote:
Originally Posted by oli83 View Post
Oh.. didn't seem so big to be elevator shafts..
Nice rendering btw!
I'm a bit scared of modeling this thing, no renderings for now.. The shot you see was taken from an exhivition Calatrava himself did a while back in Queen Sofía Spanish Institute.


Last edited by Otie; April 12th, 2012 at 07:25 AM.
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Old April 12th, 2012, 07:21 AM   #893
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That liquified surface effects on the left looks cool.
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Old April 12th, 2012, 05:21 PM   #894
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Quote:
Originally Posted by Scrapernab2 View Post
I'd say the oculus and GCS are close:
"The Main Concourse is the center of Grand Central Station. The space is 275 ft (84 m) long, 120 ft (37 m) wide and 125 ft (38 m) high"
Using your dimensions for the Grand Central concourse, the transit floor for the Hub is significantly larger.
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Old April 12th, 2012, 06:16 PM   #895
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More big beams on site today. This thing is really moving.

Any guesses on when the soaring ribs start going up? I think someone said the Fall, right?
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Old April 12th, 2012, 11:33 PM   #896
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I only remember the PA saying oculus steel would be above ground sometime summer/fall '12. Nothing regarding the wings specifically though. Maybe someone else has information.
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Old April 13th, 2012, 04:20 AM   #897
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1st New south support column installed on the south side of the rolling crane
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Old April 13th, 2012, 06:41 PM   #898
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Quote:
Originally Posted by 600West218 View Post
Any guesses on when the soaring ribs start going up? I think someone said the Fall, right?
The winged structure will be fabricated by Skanska and erected by its operating unit Skanska Koch, construction is expected to begin by Fall 2012 and will end by July 2013.
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Old April 13th, 2012, 10:14 PM   #899
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Quote:
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The winged structure will be fabricated by Skanska and erected by its operating unit Skanska Koch, construction is expected to begin by Fall 2012 and will end by July 2013.
Thanks very much for the info, I've been wondering when we'd see those. The progress here is really impressive.
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Old April 14th, 2012, 01:29 PM   #900
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Can someone explain why they chose a "sliding tower crane" (or whatever its name is) instead of a crawler crane?

I don't know anything in that area of expertise, but when you look at the VSC, they used the 16000 for a similar task, sliding from west to east, lifting similar weights as far as I know.

So what are the advantages and downsides of each solution in the case of the transportation hub? Like in price, capacity, etc. I'd think that the current solution is cheaper since they don't need much height, but if someone with wider knowledge wants to enlighten me, please do it.
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