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Old June 15th, 2012, 06:01 PM   #3621
NewYorkSkyline117
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Quote:
Originally Posted by spectre000 View Post
This is an older elevation drawing, but I think the top is still accurate. As far as I know the only difference in this and the current design is three extra office floors (two before the setback, one after). From the top you can see the 72nd level is mechanical, but not 72M. But I would surmise it serves some maintenance related issues (ventilation shafts, window washing units, water tower, etc).

Otie is right, the parapet starts on the 72nd floor, but looks like it only does for the N, S, and W sides of the tower. I wonder if we'll see the same X cross beams for those sides. Makes sense for the eastern side since that appears where most of the mech equipment is. The parapet steel doesn't have to be nearly as strong as the stuff they are currently putting up on the west side.
Oh okay i see. What exactly is the parapet, a wall around the roof, or an inclined structure on the roof?
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Old June 15th, 2012, 06:17 PM   #3622
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Quote:
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Oh okay i see. What exactly is the parapet, a wall around the roof, or an inclined structure on the roof?
Parapets are essentially a wall designed to hide mechanical equipment on roofs. An inclined structure probably best describes a crown. Crowns do essentially the same thing as a parapet (hide mech equipment), but are enclosed. Parapets are open.
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Old June 15th, 2012, 11:54 PM   #3623
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Quote:
Originally Posted by Kanto View Post
I always wondered, what things are they putting behind the parapet? Is it only a water tower, HVAC cooling towers and window cleaning equipment, or are there more things?
pretty much.

Generators, condensers, cooling towers, hoist(s), mechanical pumps.
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Old June 16th, 2012, 12:00 AM   #3624
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From Veterans Memorial Waterfront Park, Elizabeth, NJ

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Old June 16th, 2012, 12:28 AM   #3625
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Quote:
Originally Posted by thejacko5 View Post
pretty much.

Generators, condensers, cooling towers, hoist(s), mechanical pumps.
Thanks for the info
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Old June 16th, 2012, 08:22 PM   #3626
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Looks as if 4 world trade center's parapet is going up fast.
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Old June 16th, 2012, 09:00 PM   #3627
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image hosted on flickr

4 WTC by drken10003, on Flickr
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Old June 16th, 2012, 09:13 PM   #3628
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Quote:
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Looks as if 4 world trade center's parapet is going up fast.
That's not the parapet, it's the 72m floor. Notice the "X" Beams, like the ones at the 46-47th floors
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Old June 16th, 2012, 09:30 PM   #3629
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Quote:
Originally Posted by マイルズ View Post
That's not the parapet, it's the 72m floor. Notice the "X" Beams, like the ones at the 46-47th floors
Yes it is. The parapet starts at floor 72.
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Old June 16th, 2012, 09:55 PM   #3630
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Yes it is. The parapet starts at floor 72.
the parapet starts after floor 72...
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Old June 16th, 2012, 10:05 PM   #3631
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Quote:
Originally Posted by Hudson11 View Post
the parapet starts after floor 72...
No, read this post from Otie on SSP.

http://www.skyscrapercity.com/showpo...postcount=3617
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Old June 16th, 2012, 10:15 PM   #3632
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So exactly how tall is this building after the height jump? Is this the last jump?

Yay! My 100th post!!
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Old June 16th, 2012, 10:45 PM   #3633
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I dunno exactly, somewhere between 286 and 298 meters, but iirc this was not the last jump. There should be one more.

EDIT: Spectre just stated that it's 294 meters or 964 feet. I will update my diagram later
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Last edited by Kanto; June 16th, 2012 at 11:12 PM.
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Old June 16th, 2012, 10:49 PM   #3634
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Quote:
Originally Posted by Hudson11 View Post
the parapet starts after floor 72...
The parapet starts at 72M so they are working on the parapet.
Check Otie's explantion
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Old June 16th, 2012, 10:58 PM   #3635
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Quote:
Originally Posted by chris123678 View Post
The parapet starts at 72M so they are working on the parapet.
Check Otie's explantion
I did and I posted it right above you and he says 72 but it
doesn't matter lol either way its almost top out time for both these babies and I really can't take the anticipation anymore!
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Old June 16th, 2012, 11:09 PM   #3636
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Quote:
Originally Posted by BritneySpearsRocks93 View Post
No, read this post from Otie on SSP.

http://www.skyscrapercity.com/showpo...postcount=3617
The drawing on the post below shows how the top of T4 will be.

http://www.skyscrapercity.com/showpo...postcount=3619

Most of the parapet starts on the 72nd floor. But not on the eastern side. The 72nd floor is mechanical which is why we're seeing similar steel like that on the floors before the setback. T4 reaches up to 72M (about 964 ft ATM).
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Old June 16th, 2012, 11:13 PM   #3637
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Quote:
Originally Posted by マイルズ View Post
So exactly how tall is this building after the height jump? Is this the last jump?

Yay! My 100th post!!
It's about 964 feet high right now. There will be one row of glass (for the eastern side of the parapet above this "X" shaped steel. The N, S, and W side of the parapet should be three rows of glass. I don't think they've started with that steel yet.
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Old June 16th, 2012, 11:47 PM   #3638
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I must be crazy because i swore these conversations were on 1wtc forum
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Old June 16th, 2012, 11:54 PM   #3639
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They were, but somebody moved them
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Old June 17th, 2012, 01:40 AM   #3640
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Diagonal bracing around the perimeter of a tower is usually a very good indication that the parapet has been reached.

This sucker is topping out very soon.
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