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Old November 20th, 2012, 10:14 AM   #1501
oli83
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So they better hurry up, if they really want to erect superstructure steel this month..

from http://www.wtc.com/news/c/construction-updates

WTC Construction Update, November 2012


World Trade Center Transportation Hub

Steel erection for the Transportation Hub oculus substructure has begun as has construction connecting to the Vehicular Security Center. Steel and concrete has been placed underneath the 1 subway line along the Greenwich Street corridor. Preparations are being made for the installation of the east arch truss. The steel installation for the oculus superstructure is set to begin in November 2012. The Transportation Hub construction contract was awarded to Skanska in summer 2010. Construction of the West Street pedestrian underpass (the "east-west connector") , linking the World Trade Center with Battery Park City's World Financial Center, is now active on the west side of the WTC site ( just south of 1 WTC and across West Street). The east-west connector structural components are being installed across West Street.
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Old November 20th, 2012, 11:20 AM   #1502
Beber
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Quote:
Originally Posted by 325ccr View Post
The original east as when the 18000 was down there?
I think he meant the one that just got removed. The footings for the original crane are too small for the 1280, so are the holes in the slabs (they might not even still be there). From the look of it, it will most likely go on that yellow steel structure that has been set up in the past weeks. We can clearly see that one of the mast section has been fitted for that.

And speaking of slabs, looks like they're closing in on the east side ground level, with a big pour happening. I don't know if they're just doing the columns or the whole thing, but they started very early and there already are many trucks. Pretty soon, there won't be any rebar left on site, and that's a pretty nice milestone.
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Old November 20th, 2012, 02:45 PM   #1503
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The turntable for the 1280 has just turned up and its bloody massive!!!!!!!
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Old November 20th, 2012, 03:52 PM   #1504
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i think that is only half of the tray. there should be another section that attaches rearward where the counterweights will hang.
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Old November 20th, 2012, 04:24 PM   #1505
325ccr
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Beber looks like they just set the first piece exactly where you said.

Yep another piece of it still to come

Here is a pic of one going up

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Old November 20th, 2012, 05:00 PM   #1506
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Yer just the front bit still the rear section to come.
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Old November 20th, 2012, 05:52 PM   #1507
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Wow, what a day. A large east side pour is happening, a new crane is going up, and the west side escalator trays are being fitted.

Things are starting to come together!
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Old November 20th, 2012, 06:47 PM   #1508
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Wow that was a huge pour. I can't wait to see the superstructure pieces go up!
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Old November 20th, 2012, 06:55 PM   #1509
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The first pieces of the Oculus superstructure are in Brooklyn awaiting to be shipped to the site.
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Old November 20th, 2012, 06:55 PM   #1510
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When are they going to finish it?
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Old November 20th, 2012, 08:01 PM   #1511
325ccr
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Unloading in Brooklyn found on Instagram







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Old November 20th, 2012, 08:42 PM   #1512
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Great find! The steel was constructed in Spain if i remember right? Because of the special curves Calatrave makes a steelcompany in Spain specialises in building it.
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Old November 20th, 2012, 09:06 PM   #1513
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Nice find indeed, thanks 325ccr! With this steel already in NY, crane being assembled, things could go on quickly.

And about the spanish steel, I'm just going to quote Zen, who is still deeply missed around here. I'm sure he would have been just as excited as us to see this thing going up.

Quote:
Originally Posted by Zensteeldude View Post
Most American steel companies fabricate and erect steel, it is installed by other companies about 40% of the time.

You then go on to describe standard practice for fabricating "non-standard" steel.

The Spanish company is a sub-contractor working for DCM.

As I said, there are a number of companies in the tri-state area that can fabricate the steel. There is nothing all that special about "Calatrava steel", the quantity and time frame are the big factors . ( I have the prints, and 29 years of experience.)

Bottom line is cost, the Spanish company was low bidder.
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Old November 20th, 2012, 10:04 PM   #1514
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As far as I Know is not a spanish company but an italian one, the Cimolai S.p.A., that already worked with Calatrava in Italy and abroad.
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Old November 20th, 2012, 11:14 PM   #1515
ThatOneGuy
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Is that for the above-ground structure?
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Old November 20th, 2012, 11:23 PM   #1516
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Enjoy my mspaint skills



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Old November 20th, 2012, 11:25 PM   #1517
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Quote:
Originally Posted by RealVooDoo View Post
As far as I Know is not a spanish company but an italian one, the Cimolai S.p.A., that already worked with Calatrava in Italy and abroad.
Correct, lower portal frames are being fabricated by Cimolai Spa, the subcontractor is also responsible of welding stainless steel plates between the carbon steel at different levels of the portals, this is needed in order to minimize thermal expansion.

Remember that the each "arch" or wing or whatever you want to call it is formed by 3 major sections: the lower portal, the arch segment and the rafter.

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Old November 20th, 2012, 11:27 PM   #1518
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Quote:
Originally Posted by Beber View Post
Nice find indeed, thanks 325ccr! With this steel already in NY, crane being assembled, things could go on quickly.

And about the spanish steel, I'm just going to quote Zen, who is still deeply missed around here. I'm sure he would have been just as excited as us to see this thing going up.
Thanks for the quote. I missed that one. It's a pitty Zen is not around anymore to provide us with some inside info.
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Old November 20th, 2012, 11:34 PM   #1519
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Quote:
Originally Posted by Beber View Post
Enjoy my mspaint skills



Get a 3D view of an accurate model based on the architectural prints

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Old November 20th, 2012, 11:47 PM   #1520
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It's amazing to see the actual steel after so much waiting. I wonder if they'll only install the portals using the m1280ds and use a mobile/small crawler-lattice crane to do the last two components of each wing.
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