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Old February 24th, 2015, 07:51 PM   #5281
Otie
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Quote:
Originally Posted by weidncol View Post
That and a combination of them being in a mechanical/transition segment.

By the way, they aren't using scaffolding. It's a self-climbing platform system
Quote:
Originally Posted by Aalecki View Post
Mechanical floors have additional reinforcing and bracing to manage the latteral movement of the building.
Yes, that would be for the structural steel, which will follow soon enough.

Take 1WTC, the tower superstructure has 3 above-street-level mechanical plenums (at the podium, below the observatory levels and above). Floor slabs are treated as mezzanines (they do not extend to the perimeter columns but to the plenum walls), they certainly have a steel frame much more elaborated than that of typical office floors, and they house lateral bracing systems for wind resistance. Given 1WTC is a steel-first building, cranes also needed to install the biggest-sized MEP equipment before moving to the upper floors (since neither elevator shafts nor construction elevators could accommodate this equipment for transportation).

I think it is safe to assume that given this is a core-first building, we shouldn't expect delays on the tower's core erection every time it hits a mechanical section, since it isn't the core where we see these atypical changes in the superstructure, but in the steel frame on floor slabs and perimeter columns.

Any comments on the matter?

EDIT: NYCStruct gave a much clear and thorough answer.

Last edited by Otie; February 24th, 2015 at 07:59 PM.
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Old February 24th, 2015, 10:08 PM   #5282
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Quote:
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I would be extremely surprised to see that Favco M760D installed in the next two weeks - I'd wager my paycheck that it will not be happening.

An "official" decision has yet to be made regarding the use of the Wolff 700B or the Favco M760D.

The Favco M760D would also need a shorter deck configuration which has not yet been approved for use in NYC.
Doesn't the Favco have a higher load capacity than the Wolff?
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Old February 24th, 2015, 11:00 PM   #5283
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Originally Posted by weidncol View Post
Doesn't the Favco have a higher load capacity than the Wolff?
The winch has more capacity and line pull. When the Wolff has 2 parts of line or more the capacities are equivalent, but the hoisting speed of the Favco is still better.
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Old February 25th, 2015, 04:32 AM   #5284
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Personally. I really don't care which crane they choose....just get the damn thing on site already so steel erection can resume.....
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Old February 26th, 2015, 12:26 PM   #5285
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Everyone is so excited about the build that everything will be analized.
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Old February 26th, 2015, 06:57 PM   #5286
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I wonder what the lighting scheme will be for this tower. The crown and spire bathed in white LEDs? I think the simple white strips on 4WTC very much fit that tower's "personality" of deference but I expect something more aggressive for this building.
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Old February 26th, 2015, 08:00 PM   #5287
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My imagination of it would be the spires on the top would be lit up and that's it. It does still have spires, doesn't it?
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Old February 26th, 2015, 08:07 PM   #5288
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I doubt it will be anything fancy. It sits in the middle of the complex, after all. There should be warning lights on the spires and maybe some LEDs inside the crown parapet and mech levels below a la 1 WTC. Here's how it was depicted in Dbox's renderings for that Discovery Channel special in 2012.



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Old February 28th, 2015, 08:26 AM   #5289
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A shame 2 couldnt get built right away, it really shapes the site,
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Old February 28th, 2015, 09:55 AM   #5290
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Those dbox renderings and that discovery channel show are what really made me interested in the complex and are exactly why I don't want 125 Greenwich built at its current height. I want those renderings realized.
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Old February 28th, 2015, 09:49 PM   #5291
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When will steel start to rise
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Old March 1st, 2015, 08:31 AM   #5292
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All photos provided by NYguy @SSP.

February 27, 2015
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Old March 1st, 2015, 08:39 AM   #5293
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Between 4,3, Transit Hub and 2 thats alot of buildings in essentially a one block stretch with Church street looking rather small down to two lanes from three.
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Old March 1st, 2015, 08:45 AM   #5294
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Church Street will eventually be three lanes, with another lane being in the secure zone.
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Old March 1st, 2015, 03:43 PM   #5295
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Weidncol, great photos ! From many sides of the 3WTC sorround

What is name of that tall skyscraper u/c visible on the left of WTC 3 ?
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Old March 1st, 2015, 04:40 PM   #5296
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30 Park Place, another tower by Silverstein.

Probably the quickiest tower to rise in some time.
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Old March 1st, 2015, 06:43 PM   #5297
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I would say it's time for some steel!!
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Old March 1st, 2015, 07:57 PM   #5298
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Once the snow melts this is gonna take off like a rocket
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Old March 1st, 2015, 08:59 PM   #5299
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well, we got a fresh coating today. Don't worry, it'll be Spring soon... maybe

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Old March 1st, 2015, 11:28 PM   #5300
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Looks like they'll lose time with clearing the snow. Miserable conditions to work in.
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