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Old November 22nd, 2013, 10:12 PM   #9781
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Quote:
Originally Posted by Salvatore Varriale View Post
Tim are u sure? And you know which kind of mass dumper is? and where it will be collocate?
There will be Two tuned - mass dampeners used in 432 Park plus other technologies.

ENGINEERING SLENDERNESS and WIND-TUNNEL TESTING

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Structural engineers use wind-tunnel laboratories to test their designs. The models in this case of 432 Park Avenue were developed for the engineers WSP Cantor Seinuk (now known as WSP Group) by the consulting company RWDI, a testing lab in Guelph, Ontario.

The tower's structural concept can clearly be seen in the tall section elevation seen through the glass on the adjacent case. As described by the engineers, WSP Cantor Seinuk:

The structure consists of an architecturally-exposed concrete tube system, coupled to a central core with concrete strengths of more than 14,000 psi.

A flat slab spans from core to perimeter with no interior columns, giving the interior space planning the maximum flexibility possible. Given the tower's height and aspect ratio of more than 15:1, the efficiency of the structure is of the utmost importance in order to create structure that works harmoniously with the architecture. To that end, every inch of concrete is utilized to provide lateral stability and maximize efficiency.

As with most high-rise buildings, controlling the perceptibility of lateral motion building in high wind conditions is a key design focus. To that end, a series of openings through the structure were developed through wind-tunnel testing that improve the aerodynamics of the building.

In addition, two tuned-mass dampers were designed to further reduce lateral accelerations to acceptable levels for the occupant's comfort.

Portion of an elevation section of 432 Park Avenue.
Courtesy of Rafael Vinoly Architects.



Wind Tunnel Model. On loan from RWDI laboratory, Guelph, Ontario

Read further: http://www.skyscraper.org/EXHIBITION...turalengin.php
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Old November 22nd, 2013, 10:54 PM   #9782
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[QUOTE=Vertical_Gotham;109070437]There will be Two tuned - mass dampeners used in 432 Park plus other technologies.

ENGINEERING SLENDERNESS and WIND-TUNNEL TESTING


Tank's VERTICAL GOTHAM ... do you have some information about the tuned mass dampers?
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Old November 22nd, 2013, 11:42 PM   #9783
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Old November 22nd, 2013, 11:47 PM   #9784
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Another core jump?!
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Old November 22nd, 2013, 11:54 PM   #9785
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Yes, they raised the core, but they haven't raised the outer forms yet. I think it is the first time the core is three completed floors above the perimeter.
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Old November 22nd, 2013, 11:56 PM   #9786
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It is. Rebar has also gone in around the perimeter, which is usually followed the next day by forms being raised. I guess they are trying to keep the core jumping while final work on the MEP floors is finishing up.
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Old November 23rd, 2013, 12:15 AM   #9787
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guys, I just wanted to show you my phone lock screen wall paper.

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Old November 23rd, 2013, 12:19 AM   #9788
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That looks incredible! If I had a smartphone, I'd definitely get a wallpaper like that.
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Old November 23rd, 2013, 12:21 AM   #9789
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Kanto, no need to redo your diagram due to the core jump today. We are now at 189 metres or 620 feet!
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Old November 23rd, 2013, 12:22 AM   #9790
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hehe. all thanks to ssc!
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Old November 23rd, 2013, 12:36 AM   #9791
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Quote:
Originally Posted by L.A.F.2. View Post
Kanto, no need to redo your diagram due to the core jump today. We are now at 189 metres or 620 feet!
Actually, it is currently 191 meters or 625 feet tall because the pic CCs77 posted shows the climbing core form system being 1 and 1/3 of a floor high, therefore another 5 feet must be added if we are to count the height to the roof of the climbing core form system. But tomorrow I also plan to add a silhouette of 30 Park into my NYC diagram since it just came to ground level

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Old November 23rd, 2013, 12:47 AM   #9792
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Sounds good to me. I didn't know that was supposed to be included in the height.
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Old November 23rd, 2013, 12:47 AM   #9793
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Quote:
Originally Posted by L.A.F.2. View Post
Kanto, no need to redo your diagram due to the core jump today. We are now at 189 metres or 620 feet!
I'm not Kanto, but I'll re-post this one.

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Old November 23rd, 2013, 01:00 AM   #9794
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What is an actual high (built)?
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Old November 23rd, 2013, 01:10 AM   #9795
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426 meters or 1 396 feet
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Old November 23rd, 2013, 03:29 AM   #9796
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From yesterday - full update.

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Old November 23rd, 2013, 09:07 AM   #9797
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426 meters or 1 396 feet
No, I mean a built high - 100-150 meters already?
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Old November 23rd, 2013, 02:05 PM   #9798
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Woooow! New core jump again!

http://www.432parkavenue.com/new-con...in-NYC/#video2
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Old November 23rd, 2013, 02:36 PM   #9799
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appears that they are pouring the walls now
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Old November 23rd, 2013, 03:05 PM   #9800
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Has it passed the IBM building yet?
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