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Thread: WTC Transit Hub - by Santiago Calatrava

  1. #2281
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  2. #2282
    Disgruntled Optimist lofter1's Avatar
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    Quote Originally Posted by infoshare View Post
    Poor SHoP ... Their Mulberry condo seen in that link is a derelict shell, sitting forlorn and incomplete for nearly a year (and wrecking the vista beyond Old St. Patrick's Cathedral at Prince & Mulberry).

    And their Seaport plan, unveiled just as the economic crash started to implode, is unlikely to be built.

  3. #2283
    Disgruntled Optimist lofter1's Avatar
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    Quote Originally Posted by LightningEagle View Post

    can someone tell me what are those pieces are for? thank you
    Looks like they're panels for the big box girders, this one going in on the west side of the subway line.

    Here's a similar piece for the box girder being constructed on the east side ...

    POST 2226

  4. #2284

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    So all this steel is green...and in the renders, it's supposedly white. The ones in the 1WTC concourse were.

    Painting it white is an option, but it sounds tacky to me. Paint tends to chip away, and create tons of layers over the years of repainting.

  5. #2285

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    All the arches and permanent steel already have at least 2 coats of paint on them.

    The steel is fabricated then sand blasted SP-10, near white metal followed immediately by the first coat.

    Calling what they are using, paint, is like calling a F-1 racer a car. In fact, they don't even call it paint, it's a coating system.

    All the exposed steel gets a final coating of Intumescent paint.

    This is my favorite video, protecting a piece of card board from a torch.
    http://www.youtube.com/watch?v=wvtQm...eature=related

    PS: It should never need repainting, just cleaning.

    PPS: I'm pretty sure this is the second coat. It's a rather unique color and is still deeply embedded in some of my work clothes even after 20 or so washings.
    http://www.tnemec.com/product/view/Series-1-Omnithane

    PPPS: Ya can't buy this stuff at the local Home Depot and it costs $90 a gallon.
    Last edited by ZenSteelDude; March 6th, 2011 at 03:36 PM.

  6. #2286

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    So will they be able to begin finishing the memorial plaza, (trees, dirt, all that good stuff), that is above the calatrava terminal after the spine is put in?

  7. #2287

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    Yes.

    If you look closely, (through my eyes?) you can see the rebar already being placed for the slab and thrust beams.

    Give em a few months.

  8. #2288
    Senior Member westmc9th's Avatar
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    insider shots of the first Vierendeel truss

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  9. #2289

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    wow.. thanks.. are the white triangular members temporary?

  10. #2290

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    Can't wait to see more of this one.
    How are they staging the construction there? They're installing temporary steel to support the top of the spine, but won't that prevent them from installing the spine lower down? Are the lower-down sections going to be installed from the inside, like was done for bits of the mezzanine?

  11. #2291

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    The temporary A frames go between the spine "bones", which are suspended from the top. Afterwards horizontal connections will be made between the pieces to form the arch.

  12. #2292
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    they are taking temporary platform apart. There is alot of workers on a "roof" today.

  13. #2293
    Disgruntled Optimist lofter1's Avatar
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    Laying rebar up there. The new section of box girder continues to grow ...

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  14. #2294

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    Quote Originally Posted by westmc9th View Post
    insider shots of the first Vierendeel truss

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    Yesterday I was 3 seconds away from making a post saying that that thing is NOT a Vierendeel truss. (Saved yet again by the wife ! But of course that is why I married her !)

    I changed my mind.

    Though it is not a true Vierendeel truss it does meet most of the definitions of one. On the east-west plane it is one, though it has a huge dose of arch in it on the bottom chord. There are many Vierendeel truss bridges where the top chord is arched so let this be one where the bottom chord is arched.

    It's total lack of diagonal bracing is what swayed me.

    As an engineer, this thing is rather ugly, wasteful of material. As a human being, this thing is rather cool !

    Personally I really like Calatrava designs, and I think this is one of his best.

    (On a professional level I greatly respect him. Yes, I have met him in person and was as giddy as a school girl after her first kiss. He can turn simple paper and pencil into works of art!( I think you had to be there as he sketched out his vision right before your eyes. He has a talent for visualizing and putting those visions on paper that I have never seen before!) I consider it a high point in my life.) And as an end, He as a DS in engineering, much deserved! (Lowly me only has an MS.)
    Last edited by ZenSteelDude; March 8th, 2011 at 07:18 PM.

  15. #2295

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    "Who ever is praying for rain, please stop !"

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