NEW YORK | 270 Park Ave | 1,389 FT | 57 FLOORS

[NYguy]

Originally Posted by Dylan Dude

Okay this building got to the stage where it's going to finally be fun to watch. That demolition and foundation work was time consuming but now this thing is flying up. Soon it'll be really tall

Originally Posted by tiger-cali

Dear NYGUY - We really appreciate your hard work in snapping these pics to update the rest of us about this amazing project!

This one is indeed fun to watch. I enjoy getting a good look at it rise, because it’ll be completed before we know it. I only hope we get to see at least one rendering before the facade work begins.




https://www.instagram.com/p/Cam-7Q6r8B1/

[colemonkee]

Man, you forget how huge those beams are until you see one up close.

[mr.John]

Why is it that New York is still using steel frames to put up some of their skyscrapers,something that's become very rare all over the world

[JACKinBeantown]

Originally Posted by mr.John

Why is it that New York is still using steel frames to put up some of their skyscrapers,something that's become very rare all over the world

Maybe getting all those cement trucks coordinated and lined up in a timely fashion is difficult to do in Manhattan. They have to come in through congested tunnels, navigate traffic, line up on narrow streets, etc. While trucks carrying steel beams have to do the same thing, it doesn't matter how long they sit there waiting (unlike wet cement).

[gttx]

Originally Posted by mr.John

Why is it that New York is still using steel frames to put up some of their skyscrapers,something that's become very rare all over the world

For an office building like this, steel (or steel with concrete core) is more common almost everywhere, for lots of reasons related to design, construction, efficiency, logistics, tenanting, maintenance, and adaptability.

Concrete is more common for residential and hotel buildings.

[NYguy]

New York does do a lot of concrete construction. As a matter of fact, while 10 and 30 Hudson Yards are of similar design, one is concrete construction, the other is not.

[Raysiri]

Would Foster + Partners showcased what the glass panels would look like before installing them? Like how 50 Main Street in San Francisco did?

[Xing Lin]

Found this cool but compressed wireframe view of 270 Park's structure, on the webpage for a seminar presented by the CEO of Severud Associates, the Engineer of Record for this building:

https://ceees.nd.edu/events/the-chan...own-manhattan/

[Drcastro]

Originally Posted by mr.John

Why is it that New York is still using steel frames to put up some of their skyscrapers,something that's become very rare all over the world

For one thing, if you read up on this building AT ALL you would see that it is being built over an active rail yard for Grand Central Terminal. Thus, not only is it not concrete, it also has no concrete core.

[Xing Lin]

Originally Posted by mr.John

Why is it that New York is still using steel frames to put up some of their skyscrapers,something that's become very rare all over the world

A couple of excerpts from the description for that University of Notre Dame engineering seminar I linked above:

"Because of the location above a railroad, a concrete core was not possible. In addition, the architectural design dictated that the lobby be completely open, so every single column transfers. At the core, this is accomplished with two, 25- ft.-deep transfer girders with 60 in. x 8 in. flanges approximately 300 ft. long."

"Due to the constraints of the train terminal below, the tower itself lands on only fourteen points. The columns ‘fan’ and ‘v’ to forgings that weigh more than 75 tons each, and sit on 16,000 psi concrete walls cast between MNRR tracks and platforms below. These walls continue down another level to the new Long Island Rail Road East Side Access concourse, almost 100 ft. below street level."

[vegeta_skyline]

Originally Posted by mr.John

Why is it that New York is still using steel frames to put up some of their skyscrapers,something that's become very rare all over the world

Because using steel is cool

[NYguy]

Originally Posted by Xing Lin

Found this cool but compressed wireframe view of 270 Park's structure, on the webpage for a seminar presented by the CEO of Severud Associates, the Engineer of Record for this building:

https://ceees.nd.edu/events/the-chan...own-manhattan/

Very cool.

[NYguy]

Now on levels 7 and 8...


MARCH 5, 2022


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[JACKinBeantown]

Originally Posted by NYguy

Now on levels 7 and 8...


MARCH 5, 2022


15.

I see holes, so I naturally think of elevator shafts. Is that where they'll go?


On a related note, this is the coolest elevator in one of the coolest buildings I've ever been in.

• Video Link

[Raysiri]

https://newyorkyimby.com/2022/03/jpm...manhattan.html

JPMorgan Chase’s 270 Park Avenue Continues Its Ascent In Midtown East, Manhattan


270 Park Avenue. Photo by Michael Young.

BY MICHAEL YOUNG 8:00 AM ON MARCH 7, 2022

Construction continues to rise on 270 Park Avenue, JPMorgan Chase‘s new 1,388-foot-tall, 70-story supertall headquarters in Midtown East. Severud Associates is the engineer of record and Mueser Rutledge Consulting Engineers (MRCE) designed the structural foundation elements for the 2.5 million-square-foot tower, which takes up a full city block between Park and Madison Avenues and 47th and 48th Streets.

Several office floors have been added since our last update at the end of December, when the flared base had recently finished. There are now four levels with metal decking standing above that point, and progress should pick up in the coming weeks as the weather gets warmer.

270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.



270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.

The construction elevator hoist facing Park Avenue has also climbed higher above street level, while the construction cranes should also follow suit.

270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.


270 Park Avenue. By Michael Young.

On the western half of 270 Park Avenue is a flat cantilevering section that protrudes beyond the first office level, and wraps around the northern and western corners. The opposite eastern elevation does not have any steel connections that would indicate a replicated assembly.

270 Park Avenue. By Michael Young.

So far the core of the edifice has yet to appear at the center of the project, but this should occur sometime in the coming weeks. Workers could possibly reach the first setback by the end of spring or early summer, and the superstructure could conceivably hover just below the halfway point by the end of the year. The gradual reduction in floor size should aid in the speed of construction.

270 Park Avenue’s completion date remains undisclosed, but is estimated to take several more years.

[NYguy]

https://www.instagram.com/p/Cauz1pTuql2/











https://www.instagram.com/p/Ca0hOgXgoGX/











https://www.instagram.com/p/CasQjM-pZH6/

[Xing Lin]

This photo from Instagram shows a beam with an X junction, which I think could only belong to the lower core:


https://www.instagram.com/p/Cam-7Q6r8B1/

[NYguy]

Originally Posted by Xing Lin

This photo from Instagram shows a beam with an X junction, which I think could only belong to the lower core:
https://www.instagram.com/p/Cam-7Q6r8B1/

Wondered about that piece.




https://www.instagram.com/p/Ca2bzTiLB0f/

Not trying to gush over the same project, but come on! This building is flying (metaphorically speaking). What you don’t see is the army of flatbeds, parked on streets in a close radius to the jobsite, with materials to be delivered and rigged up via one (or more) of these tower cranes. It really is a thing of beauty when you fathom the careful coordination and orchestration that goes into making this happen

[NYguy]

Brechtbug

[Raysiri]

Wow it looks huge from Grand Central.