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Old October 17th, 2009, 03:24 AM   #11001
SJM
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Quote:
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Look how small the guy in green is compared to those columns.
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Old October 17th, 2009, 04:25 AM   #11002
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Looks great so far. I am impressed by the sudden jump in progress. It was interesting to watch the southern of the 2 tower cranes move in sync with the big red mobile crane, that mobile crane is -massive-. Standing there, one crane would move, drop its load, then get out of the way, then the other came in, pick its load up, 1st crane comes back in when there's room etc. This is way more exciting than looking into literally a hole in the ground with hardly any visible progress.

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Old October 17th, 2009, 04:31 AM   #11003
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Quote:
Originally Posted by micrip View Post
Where is the steel being fabricated?
The steel is being fabricated in South Plainfield, New Jersey by MRP LLC a division of the Davis Group. The steel is being erected by DCM a division of the Davis Group. The patented system for jumping the cranes is provided by Federated Equipment, a division of the Davis Group. See the pattern ?

The W14x730 beams that make up the heart of the "jumbo columns" were rolled in Luxembourg.
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Old October 17th, 2009, 04:41 AM   #11004
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The forms are modular and can be reconfigured to fit around the few beams that intersect the core.

image hosted on flickr


Having floors in place ahead of the core well actually speed up the placement of re-bar and forms, the floors give the men a safe work platform.

As for material, there well be more tower cranes added and 9 construction elevators.
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Old October 17th, 2009, 04:54 AM   #11005
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it looks fine!! when does the tower finished?
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Old October 17th, 2009, 05:20 AM   #11006
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it looks fine!! when does the tower finished?
2013.
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Old October 17th, 2009, 02:12 PM   #11007
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Quote:
Originally Posted by Zensteeldude View Post
The forms are modular and can be reconfigured to fit around the few beams that intersect the core.

image hosted on flickr


Having floors in place ahead of the core well actually speed up the placement of re-bar and forms, the floors give the men a safe work platform.

As for material, there well be more tower cranes added and 9 construction elevators.
More tower cranes? Where are they gonna place them?
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Old October 17th, 2009, 06:02 PM   #11008
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Zensteeldude,

Do you know what the exact procedure is for building the core and floors and interfacing the two? Here's a total guess on my part, based on the your diagram and what we've seen so far:

1) Erecting steel is installed (we've seen this).
2) Floor beams and spandrel beams are installed (as seen).
3) Filler beams installed.
4) "Rippled" metal (aluminum?) floor decking laid (seen). I don't know if we've seen a close-up shot of how close the decking extends towards the erecting steel. I'm guessing that it does not go beyond the floor beams that run near and parallel to the horizontal erecting steel beams. ...and a significant air gap is left at the four corners of the building where the floor beams attach to the erecting steel.
5) Rebar is placed around erecting steel.
6) Forms are placed around rebar. There is just enough of a gap between floor decks and rebar to allow for this.
7) Concrete is poured for core.
8) Forms removed.
9) Floor deck metal extended to be flush with core wall.
10) Rebar mats placed over floor deck.
11) Concrete poured over floor deck.

I can think of several alternatives to how the floor decks will interface with the core walls:

A) Maybe a small gap will be left between the core walls and floor decks, and the gap filled with flexible fire-proofing material. Sort of an expansion joint for movement of the building during strong winds.
B) Or, some rebar from the core turns outwards and is welded to the rebar mats on the floor decks.
C) Or, same as first scenario, except a concrete "lip" is formed on core wall, and floor deck is extended over the lip.
D) Or, deck metal goes all the way to erecting steel. Seems this would be very tricky.

Am I totally off base? It would be great to somehow get close-up photos of how it is actually done when the time comes in the next few weeks or months.

Last edited by Swiddle; October 17th, 2009 at 06:08 PM.
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Old October 17th, 2009, 06:52 PM   #11009
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how tall is the building right now?
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Old October 17th, 2009, 07:14 PM   #11010
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how tall is the building right now?
105 feet (the same height it's been for the last six months). But it should start rising again soon.
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Old October 17th, 2009, 09:02 PM   #11011
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Quote:
Originally Posted by Hightech Pro View Post
More tower cranes? Where are they gonna place them?
The site plan calls for external tower cranes on the north and south sides once the tower is out of reach of the crawler cranes. But that may change.
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Old October 17th, 2009, 09:13 PM   #11012
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Swiddle, for the most part you are correct, but the floor slab is poured first. Then the core wall. Then the space between the slab and the wall is formed out and poured.
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Old October 17th, 2009, 09:46 PM   #11013
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Quote:
Originally Posted by Zensteeldude View Post
The site plan calls for external tower cranes on the north and south sides once the tower is out of reach of the crawler cranes. But that may change.
How about these construction elevators? Is that 9 separate elevator tracks or 9 different elevators, with some sharing the same track?
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Old October 17th, 2009, 09:55 PM   #11014
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So, The actual completion date is when??????
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Old October 17th, 2009, 10:06 PM   #11015
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Quote:
Originally Posted by quanghuynhchung View Post
So, The actual completion date is when??????
Can't you read at least the last 10 posts?

Quote:
Originally Posted by tacall View Post
it looks fine!! when does the tower finished?
Quote:
Originally Posted by Desparye View Post
2013.
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Old October 17th, 2009, 10:21 PM   #11016
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Quote:
Originally Posted by quanghuynhchung View Post
So, The actual completion date is when??????
You can read it even without scrolling down...
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Old October 17th, 2009, 11:04 PM   #11017
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Quote:
Originally Posted by meh_cd View Post
How about these construction elevators? Is that 9 separate elevator tracks or 9 different elevators, with some sharing the same track?
Nine towers, 2 cabs per tower on the external ones. I think the internal ones are single cab making a total of 15 cabs.

Please note that this onfo is from 3 year old site plans and is probably not exactly what is actually going to be used. Only time well tell.

Last edited by Zensteeldude; October 17th, 2009 at 11:12 PM.
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Old October 18th, 2009, 04:14 PM   #11018
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Looks like the west entrance beam is in place. Unless that happens to be a raindrop. It DOES look like they're putting flooring up on the new story on the west side, however.
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Old October 18th, 2009, 05:31 PM   #11019
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Quote:
Originally Posted by Zensteeldude View Post
Swiddle, for the most part you are correct, but the floor slab is poured first. Then the core wall. Then the space between the slab and the wall is formed out and poured.
Thanks. That makes sense. Pouring the slab first would make it a lot easier on the workers, for standing and walking.

Will the rebar in the floor slab ultimately be attached to the rebar in the core wall?
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Old October 18th, 2009, 05:50 PM   #11020
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When are they going to start putting up the swaddling kind of covering you see in most tall buildings?
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