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Old November 21st, 2012, 01:05 AM   #1521
RealVooDoo
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Quote:
Originally Posted by Otie View Post
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.

Thank you Otie for the explanation, I had found some news on italian web site but no one was very accurate (most of them makes you think Cimolai is building the whole transportation hub )
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Old November 21st, 2012, 05:06 AM   #1522
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Originally Posted by PMadFlyer View Post
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.
Yes, portals will be erected with the M1280 and then temporary guyed, arched sections and rafters will be placed using an external crawler.

Forumer Pavinsteelman at weldingweb.com posted a long while ago pics of the ADF shop in Canada

http://weldingweb.com/showthread.php?t=58951
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Old November 21st, 2012, 05:21 AM   #1523
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Quote:
Originally Posted by Otie View Post
Yes, portals will be erected with the M1280 and then temporary guyed, arched sections and rafters will be placed using an external crawler.

Forumer Pavinsteelman at weldingweb.com posted a long while ago pics of the ADF shop in Canada

http://weldingweb.com/showthread.php?t=58951

So we might see the 16000/18000 back at the site?

Pavinsteelman is a good friend of mine, he works at MRP harris over in NJ.
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Old November 21st, 2012, 01:37 PM   #1524
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Originally Posted by Rich-E36 View Post
Yer just the front bit still the rear section to come.
The rear section just arrived on site!

Btw, thanks a lot for the great pics and renderings in the last posts..

@325ccr: do you think that the area around the oculus can support such a huge crawler like the 16000/18000? And I'm not really sure it is necessary to use such a big one, the steel it has to erect is only supporting itself (more or less) and should be much lighter than other steel already erected on site, so that a smaller one could handle it..
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Old November 21st, 2012, 03:39 PM   #1525
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Quote:
Originally Posted by oli83 View Post
The rear section just arrived on site!

Btw, thanks a lot for the great pics and renderings in the last posts..

@325ccr: do you think that the area around the oculus can support such a huge crawler like the 16000/18000? And I'm not really sure it is necessary to use such a big one, the steel it has to erect is only supporting itself (more or less) and should be much lighter than other steel already erected on site, so that a smaller one could handle it..
Not to sure, but what I do know is the weights alone on the AC500 180 tons (360,000 LBS) so it can support ALOT of weight. But remember regardless of how much they weight and depending if the crane has to sit in one spot or can crawl around the radius will affect it. It is almost safe to say if there is a crawler, to set the south rafters he will need to sit on the north side (like the AC500) and reach over the oculus due to the limited space on the T3 side? But my question is why can't the 1280's set them?
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Old November 21st, 2012, 04:06 PM   #1526
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THe larga Sanska Crane is ready to rise!

http://www.earthcam.com/usa/newyork/worldtradecenter/

Last edited by GerFok; November 21st, 2012 at 04:07 PM. Reason: Adding link
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Old November 21st, 2012, 10:07 PM   #1527
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Originally Posted by 325ccr View Post
Not to sure, but what I do know is the weights alone on the AC500 180 tons (360,000 LBS) so it can support ALOT of weight. But remember regardless of how much they weight and depending if the crane has to sit in one spot or can crawl around the radius will affect it. It is almost safe to say if there is a crawler, to set the south rafters he will need to sit on the north side (like the AC500) and reach over the oculus due to the limited space on the T3 side? But my question is why can't the 1280's set them?
Probably because with the rafters in place there will be no room for a crane to reach over them and pull out the Favcos.
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Old November 21st, 2012, 11:08 PM   #1528
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I wish the camera on the KPI site overlooking the Hub was working.

Somebody said that Hurricane Sandy blew it around. But I just checked... the camera faced 180 degrees away starting on October 26... at least 3-4 days before Sandy was an issue.

Maybe something "secret" is going on that they don't want us to see ...?
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Old November 22nd, 2012, 05:21 AM   #1529
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I've seen a few blue and white Favs come out the factory now.. Same color scheme as the 4 Favs at the stalled Bishopsgate job in London.
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Old November 22nd, 2012, 06:02 AM   #1530
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So we might see the 16000/18000 back at the site?

Pavinsteelman is a good friend of mine, he works at MRP harris over in NJ.
According to the original logistics plan, yes. I'm not sure though if the coordination plan has been modified, I'll have to ask.
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Old November 22nd, 2012, 06:15 AM   #1531
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Oh and just a FYI. The sequence Skanska will follow to erect the above grade oculus will be something like this: lower portals, subportals, upper portals, abutments, transitions, arches and rafters. The skylight project and glass envelope will then follow.
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Old November 23rd, 2012, 07:55 AM   #1532
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Got a decent picture tonight, ..I can tell you from being near an AC500, those mast sections are huge!! I know they are not right next to the ac500 but you can get an idea of the size.

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Old November 23rd, 2012, 08:40 AM   #1533
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Indeed colosal, mast will soar +250' above grade.
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Old November 23rd, 2012, 06:25 PM   #1534
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@ ChuckInTn - Yes the KPI is down but the other cams are still in Earthcam so no real secrets Here is a link to the cameras of WTC complex, beneath the screen are multiple camera options where one says; Oculus. This gives the view on the hub construction site.

http://www.earthcam.com/usa/newyork/worldtradecenter/
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Old November 23rd, 2012, 06:38 PM   #1535
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Thanks GerFok. But I miss the view down Greenwich Street and being able to see under the east side of the Hub, as well as the progress on the Vehicle Security Center.

Hopefully the camera will be back soon.
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Old November 23rd, 2012, 09:07 PM   #1536
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look at the size of the drum. look at it, then look at the drum on the TG2300 (which is a massively oversized tower crane in its own right).
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Old November 23rd, 2012, 10:07 PM   #1537
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Quote:
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Indeed colosal, mast will soar +250' above grade.
Wow that's nuts! I take it they will truck in more mast. And is the plan still to erect 2 of them?
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Old November 24th, 2012, 03:21 AM   #1538
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Wow that's nuts! I take it they will truck in more mast. And is the plan still to erect 2 of them?
Correct.
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Old November 26th, 2012, 06:43 PM   #1539
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Slew table is now attached. They sure are working fast on it, must need to get it done by the end of the month
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Old November 26th, 2012, 07:49 PM   #1540
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As a reference, the height of the slew table (thank you) is almost as high as the entire structure of 3 WTC. The "Memorial Pools" cam at KPI shows this clearly.
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