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Old March 7th, 2013, 06:54 PM   #6041
AndyMEng
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Quote:
Originally Posted by mfuru View Post
I am an structural Engineer from Sweden. The pattern can be from the ribbs caused by difference in temperature. While concrete hardens its chemical reaction creates a lot of heat, especially with high strengt concrete. The steel form cool down the concrete and locally where there are ribbs the cooling is more sufficient. This difference in cooling might effect the curing which can explain the pattern... What do you think?

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YES! You are completely right.

The critical curing is happening during the time when the concrete has been left inside the forms. During these winter months, perhaps we can assume that the ribs provide some measure of additional insulation from the cold, hence the faster curing times and the early white concrete?
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Old March 7th, 2013, 06:55 PM   #6042
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I still don't think enough of this building (or any of it actually) is on Park Avenue. This should be a W57th or 56th Street address.
There will be a retail component of this project that fronts on Park Avenue (remember the "glass box" renderings?), but I agree with you that this is really a 56th/57th St. building as far as main entrances are concerned. As the 57th St. side will have the 6-story retail portion jutting out from the base of the tower, it looks like the real main entrance to the tower will be on 56th St. But the building will be so incredibly tall and slender that it will seem to tower right over Park Avenue, as well.

Here's a blueprint showing the retail portion that fronts on Park Avenue. It looks like it won't be contiguous above ground to the tower, but there might be shared passages below grade.


Last edited by McSky; March 7th, 2013 at 07:05 PM.
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Old March 7th, 2013, 06:59 PM   #6043
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Itīs obvious why they went for the Park Avenue adress. Itīs a great marketing gimmick. But debating if itīs actually a Park Avenue building or not, is sort of hair splitting, IMO.
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Old March 7th, 2013, 07:22 PM   #6044
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It is quite common in NYC for buildings which have property connection with both Street and Avenues to use an Avenue address even if the main entrance is on the Street...for those of you not familiar with New York... Avenues run North-South...Streets East-West...Avenues are fewer in number usually wider and the more prominent identifier...Obviously a Park Avenue
address is more prestigious than 56 Street.
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Old March 7th, 2013, 08:58 PM   #6045
Eric Offereins
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Quote:
Originally Posted by McSky View Post
There will be a retail component of this project that fronts on Park Avenue (remember the "glass box" renderings?), but I agree with you that this is really a 56th/57th St. building as far as main entrances are concerned. As the 57th St. side will have the 6-story retail portion jutting out from the base of the tower, it looks like the real main entrance to the tower will be on 56th St. But the building will be so incredibly tall and slender that it will seem to tower right over Park Avenue, as well.

Here's a blueprint showing the retail portion that fronts on Park Avenue. It looks like it won't be contiguous above ground to the tower, but there might be shared passages below grade.

btw, that drawing gives a height of 1444 ft for the parapet. So that should be the official height?
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Old March 7th, 2013, 09:18 PM   #6046
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Originally Posted by AndyMEng View Post
YES! You are completely right.

The critical curing is happening during the time when the concrete has been left inside the forms. During these winter months, perhaps we can assume that the ribs provide some measure of additional insulation from the cold, hence the faster curing times and the early white concrete?
Yes, but the opposit way! The ribs cools the concrete faster as the ribs gives the forms a larger influence area exposed to the air.
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Old March 7th, 2013, 09:31 PM   #6047
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[QUOTE=57th&1st;100950027]Happened to be walking by today when they lifted a huge rebar section into place on the east wall - made me late for my meeting, but totally worth it :





btw, does anyone know what will happen to the blank wall here???
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Old March 7th, 2013, 09:41 PM   #6048
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Quote:
Originally Posted by jconyc View Post
It is quite common in NYC for buildings which have property connection with both Street and Avenues to use an Avenue address even if the main entrance is on the Street...for those of you not familiar with New York... Avenues run North-South...Streets East-West...Avenues are fewer in number usually wider and the more prominent identifier...Obviously a Park Avenue
address is more prestigious than 56 Street.
I would treat this kind of address trickery like sports leagues treat steroid use :-)

Its Address Juicing.
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Old March 7th, 2013, 10:43 PM   #6049
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If you look closely on the 56th side, you can see the crane swaying very slightly.
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Old March 7th, 2013, 11:36 PM   #6050
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Quote:
Originally Posted by Eric Offereins View Post
btw, that drawing gives a height of 1444 ft for the parapet. So that should be the official height?
If my eyes don't deceive me that looks like the figure for the elevation.
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Old March 8th, 2013, 06:37 AM   #6051
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delete
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Old March 8th, 2013, 12:41 PM   #6052
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Can't think what a great addition it will be after 432 P.A gets completed in this cluster of skyscrapers!!

[IMG]http://st.*************.com/1011582/1476/i/950/*************_14764159-Architectural-skyscrapers-in-New-York-City.jpg[/IMG]
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Old March 8th, 2013, 02:13 PM   #6053
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Quote:
Originally Posted by Eric Offereins View Post
btw, that drawing gives a height of 1444 ft for the parapet. So that should be the official height?
1,444 feet is just the elevation above sea level. It will be 1,398 feet above street level.
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Old March 8th, 2013, 03:48 PM   #6054
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Working and pouring, although there is a heavy snowfall





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Old March 8th, 2013, 03:58 PM   #6055
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A little bit of snow doesn't stop work completely, as workers at 432 Park Avenue prepare to pour concrete for the core today. Even through the swirling snow, work continues. Yesterday, preparations were made in advance of the expected snow, by covering the exterior column and spandrel forms, and the floor deck with sheeting. Also the climbing forms for the core were retracted in preparation for today's pour.

The weather outlook for New York City is snow, changing to rain later, with expected high temperature around 40F. Tomorrows forecast calls for sunny, with expected high temps around 50F. It is possible that overtime work may be scheduled for tomorrow.

It is possible that the new floor deck will be poured early next week.
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Old March 8th, 2013, 04:20 PM   #6056
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Quote:
Originally Posted by 600West218 View Post
image hosted on flickr

New York, powered by Portugal


Great tower
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Old March 8th, 2013, 06:34 PM   #6057
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Quote:
Originally Posted by NYCrulz View Post
Can't think what a great addition it will be after 432 P.A gets completed in this cluster of skyscrapers!!

[IMG]http://st.*************.com/1011582/1476/i/950/*************_14764159-Architectural-skyscrapers-in-New-York-City.jpg[/IMG]
That pic is already quite outdated and 432 will be mostly out of the pic.
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Old March 8th, 2013, 06:37 PM   #6058
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Photo update from this week with a bunch of pics.

432 Park Avenue March 2013 Construction Photos

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Old March 8th, 2013, 08:34 PM   #6059
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Snowing in NY? Floor is now covered by plastic sheet, so I guess the pouring of concrete is done.

[IMG]http://i46.************/33z8wle.jpg[/IMG]
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Old March 8th, 2013, 08:48 PM   #6060
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Yes, still snowing...they are actually still pouring inside the core
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