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Supertalls Discussions of projects under construction between 300-599m/1,000-1,999ft tall.
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Old September 10th, 2017, 10:51 PM   #3481
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starting to rise now.
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Old September 11th, 2017, 04:18 AM   #3482
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I didn't notice unil know, there are no supercolumns on the city side. On old floorplans there are two columns as big as the two on the central park side, but it looks like they got rid of them. At least I don't see any on the construction pics and there seem to be newer floorplans without them.

Maybe they are just a bit further back in the building and we are able to see them, when the building starts to taper.



edit:


New Plans: http://www.skyscrapercity.com/showpo...postcount=3068

Old ones for example in this video: https://www.youtube.com/watch?v=lIy2HPTCz3g
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Old September 11th, 2017, 10:09 AM   #3483
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This raises an interesting question for me.

If the building had no rebar in the vertical columns, could the concrete alone support its weight?

I appreciate the rebar provides strength for things like lateral forces from wind, etc., but given just the compression (downward) forces, could it hold up? Or does that vertical rebar also provide essential strength for that downward force?


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Old September 11th, 2017, 10:20 AM   #3484
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Old September 14th, 2017, 09:55 PM   #3485
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Old September 15th, 2017, 06:21 AM   #3486
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It already looks ridiculously skinny!
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Old September 15th, 2017, 06:49 AM   #3487
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Old September 15th, 2017, 07:01 AM   #3488
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This one is starting to look very slim now. I still lack the consciousness that this will rise to 435m. It feels sureal for me to have this, CPT, Verre rise and 432 Park Avenue done right there. This part of the city was the last part where I have expected such a boom to hit.
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Old September 15th, 2017, 10:29 AM   #3489
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I have got to go back east philly and new York were so close to me I lived in Atlantic city NJ was born in Jersey. Love to go see these buildings rising. Soon.
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Old September 15th, 2017, 03:50 PM   #3490
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Quote:
Originally Posted by germantower View Post
This one is starting to look very slim now. I still lack the consciousness that this will rise to 435m. It feels sureal for me to have this, CPT, Verre rise and 432 Park Avenue done right there. This part of the city was the last part where I have expected such a boom to hit.
I know what you mean. But if you think about it, the location really does make sense for it to happen. 57th Street is nestled right in the middle of Central Park, the upper east and west sides, and midtown.
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Old September 15th, 2017, 08:07 PM   #3491
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Nomad is also undergoing a mini luxury boom and that area is changing fast.
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Old September 15th, 2017, 11:12 PM   #3492
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Quote:
Originally Posted by Nuwanda View Post
This raises an interesting question for me.

If the building had no rebar in the vertical columns, could the concrete alone support its weight?

I appreciate the rebar provides strength for things like lateral forces from wind, etc., but given just the compression (downward) forces, could it hold up? Or does that vertical rebar also provide essential strength for that downward force?
Yes, the rebar supports loads in several ways:
One side, itís resistance to compression is similar to the one of the concrete, so it supports gravitational loads.
But concrete doesnít support nor traction neither shear efforts. In a beam, itís compulsory to have rebar at least in the lower side. In pillars itís necessary to support flexion and ďdriveĒ the loads.
Also, in supertalls, as they work as a cantilever, in due wind conditions, itís possible that some pillars get only traction efforts.
So, yes, the rebar in pillars is absolutely necessary.
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Old September 16th, 2017, 12:27 AM   #3493
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Quote:
Originally Posted by CarlitosPanz View Post
Yes, the rebar supports loads in several ways:
One side, itís resistance to compression is similar to the one of the concrete, so it supports gravitational loads.
But concrete doesnít support nor traction neither shear efforts. In a beam, itís compulsory to have rebar at least in the lower side. In pillars itís necessary to support flexion and ďdriveĒ the loads.
Also, in supertalls, as they work as a cantilever, in due wind conditions, itís possible that some pillars get only traction efforts.
So, yes, the rebar in pillars is absolutely necessary.
I completely agree with this. I have been in the re-bar fabrication business for 20 years. We also do structural steel. I love watching buildings go up. I've shown this building to my detailing manager and the production manager. Lots of reinforcing steel.
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Old September 16th, 2017, 09:40 PM   #3494
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Seeing the old Central Park in the 1990s when I remember being there and loving the view from within the trees to the sprawling skyscrapers around the park. But it wasn't as noticeable far away. Now, I'm a kid again with these new towers! I'd like to think New York 2020 is gonna look pretty cool with all these new towers topped off and Hudson Yards pretty much finished sparkling in the background!
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Old September 22nd, 2017, 04:40 AM   #3495
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Old September 23rd, 2017, 04:25 PM   #3496
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Old September 24th, 2017, 04:29 PM   #3497
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Old September 24th, 2017, 06:59 PM   #3498
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That's high quality detailing...!

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Old September 24th, 2017, 07:13 PM   #3499
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It has been taking a long time, but at long last

Speed!

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He's like the Santa Claus of construction workers
and ol' boobs is finally delivering. Look at that terra cotta.

Did it pick up speed when the main legal issues were resolved?

Last edited by WillBuild; September 24th, 2017 at 07:19 PM.
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Old September 24th, 2017, 09:18 PM   #3500
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Oh wow, cladding looks amazing, can't wait to see more, but what's already done is very promising. Greetings from Slovenia where we don't even have real skyscrapers.
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