NEW YORK | One World Trade Center | 1,776' Pinnacle / 1,373' Roof | 108 FLOORS

[NewYorkSkyline117]

It's 1,263 feet including splices.

Gotchya

[marshall]

When the last height jumps happen this buildings is REALLY going to come into its own then, it will truly be a supertall then! The final roof height will be just below where the tips of the roof cranes reach now, I think :cool::tup:

[1Boston]

How come when you go to NYs diagram page, it says that Hudson Yards ER 2 is supposed to be taller than 1wtc? Is it just an error?

[Roadcruiser1]

How come when you go to NYs diagram page, it says that Hudson Yards ER 2 is supposed to be taller than 1wtc? Is it just an error?

It's an error.

[NewYorkDominates]

Ok,we're currently at the 93rd floor on One World Trade Center,glass is half way up but still no signs of a NatGeo or maybe even a Discovery special about this building.Is there a reason for that and once the roof tops off,will it make national news at best?This is the most amazing building I've ever seen(in par with old WTC)yet nothing announced on TV about it.CBS,as far as remember did a 60 minute special about the construction of the old WTC.

[SoaringSkylines]

Ok,we're currently at the 93rd floor on One World Trade Center,glass is half way up but still no signs of a NatGeo or maybe even a Discovery special about this building.Is there a reason for that and once the roof tops off,will it make national news at best?This is the most amazing building I've ever seen(in par with old WTC)yet nothing announced on TV about it.CBS,as far as remember did a 60 minute special about the construction of the old WTC.

For one, we don't know if NatGeo or Discovery is currently filming an episode about this big beast. I already mentioned I hoped they had a "Megastructures" episode about it.

Also, yes. There will be news articles galore about it once it tops off (and when it opens).

[THE BIG APPLE]

Well the famous OLD 80's documentary about the old complex was released in the 1980's, a full decade after the completion. Don't be surprised if documentaries about the new WTC start coming out in the 2020's, or even after the FULL complex is complete. Although I'm sure a documentary will be released about 1 WTC earlier. Steven Speilberg just did the Rising Rebuilding WTC show, which was really good. But I'd love a documentary once everything is said and done.

[CarlosV]

http://farm8.staticflickr.com/7188/6977464589_e4f9b8ff60_b.jpg (http://www.flickr.com/photos/ceva321/6977464589/)
DSC_0127 copy (http://www.flickr.com/photos/ceva321/6977464589/) by Ceva321 (http://www.flickr.com/people/ceva321/), on Flickr

[marshall]

Ok,we're currently at the 93rd floor on One World Trade Center,glass is half way up but still no signs of a NatGeo or maybe even a Discovery special about this building.Is there a reason for that and once the roof tops off,will it make national news at best?This is the most amazing building I've ever seen(in par with old WTC)yet nothing announced on TV about it.CBS,as far as remember did a 60 minute special about the construction of the old WTC.

The documentaries will definately come out when the tower is finishes, or shortly before, I feel pretty sure of that. Because of the historical significance of the site, what happened there, and the rebuilding, the topping out and spire hoisting will get plenty of news coverage, long before the building even opens. Give it a couple or few more months, and there will be tons of news and documentaries about 1wtc, I'd wager. ;):cool:

[NewYorkSkyline117]

For one, we don't know if NatGeo or Discovery is currently filming an episode about this big beast. I already mentioned I hoped they had a "Megastructures" episode about it.

Also, yes. There will be news articles galore about it once it tops off (and when it opens).


http://www.youtube.com/watch?v=fkeTcuJwjl4

[Duck From NY]

http://www.youtube.com/watch?v=fkeTcuJwjl4

They already have made a documentary about that...research before you make more wasted posts

He was asking if there was anyone CURRENTLY filming a documentary.

Why are some people so harsh on this message board? We're just talking about skyscrapers here people, not social/political issues.

[sw5710]

http://farm8.staticflickr.com/7188/6977464589_e4f9b8ff60_b.jpg (http://www.flickr.com/photos/ceva321/6977464589/)
DSC_0127 copy (http://www.flickr.com/photos/ceva321/6977464589/) by Ceva321 (http://www.flickr.com/people/ceva321/), on Flickr

I love the angle and detail these pictures show on top Carlos. Can't live without them. Thanks.

[Fluffybagel]

http://farm8.staticflickr.com/7188/6977464589_e4f9b8ff60_b.jpg (http://www.flickr.com/photos/ceva321/6977464589/)
DSC_0127 copy (http://www.flickr.com/photos/ceva321/6977464589/) by Ceva321 (http://www.flickr.com/people/ceva321/), on Flickr

Wait, was the cocoon raised a floor?:shrug:

[sw5710]

Yes the cocoon was raised from 92 to 93 both Sunday and monday.

[Juanses]

Why must we be bombarded with so many Twin Tower photos ...?

[bobbysockBOB]

Hey everybody, I'm new here! I've been following this thread for months now and I finally decided to register. Anyway, sorry if this has been answered already but does anybody know why the tower has not been lit recently? It's been almost completely dark these past nights and I was curious as to why that is. Thanks! :)

[Don098]

When are the fireproofing and facade teams going to get started again?? I feel like the black netting has mushroomed as steel progresses, but that the rest of the building teams have been in this perpetual purgatory of inaction. I'm making these observations solely on photos, so maybe there's more going on behind the scenes that isn't changing the outward appearance of the tower, but it's starting to get annoying...

[CClaudio21]

I noticed that the tower was lit red the last two nights after switching back to normal after honoring cardinal Dolan. Any reason why?

[Roadcruiser1]

When are the fireproofing and facade teams going to get started again?? I feel like the black netting has mushroomed as steel progresses, but that the rest of the building teams have been in this perpetual purgatory of inaction. I'm making these observations solely on photos, so maybe there's more going on behind the scenes that isn't changing the outward appearance of the tower, but it's starting to get annoying...

They aren't going to start again until the tower reaches high enough for the black netting to be removed. It is going to take a while before we see any progress.

[Roadcruiser1]

Why must we be bombarded with so many Twin Tower photos ...?

Explanation of what mechanical floors are.

Hey everybody, I'm new here! I've been following this thread for months now and I finally decided to register. Anyway, sorry if this has been answered already but does anybody know why the tower has not been lit recently? It's been almost completely dark these past nights and I was curious as to why that is. Thanks! :)

I am certain they are removing the red wrappings for the lights.

I noticed that the tower was lit red the last two nights after switching back to normal after honoring cardinal Dolan. Any reason why?

Maybe they extended the honoring period, or they aren't done removing the red lights.

[uaarkson]

For the Love of Skyscrapers, pt. II

http://farm8.staticflickr.com/7200/6976616397_ea0bd00c5b_o.jpg (http://www.flickr.com/photos/severalseconds/6976616397/)
The up-above (http://www.flickr.com/photos/severalseconds/6976616397/) by Several seconds (http://www.flickr.com/people/severalseconds/), on Flickr

[WTCman7301]

Omg! I just love the way One World Trade Center is behind of the Flatiron Building. It shows the past and what will become the future, a great icon for this city:)

[NewYorkSkyline117]

When you say red wrappings RoadCruiser, do you refer to how they change te color of the lights, like for the cardinal?

[PZelda]

Ahhhhh... Flatiron and 1 WTC in the same picture. I approve. :)

[pnapp1]

Here are a couple of pics of my buddy Chris who is an iron worker at the top of WTC1.

Yesterday:
http://www.wtcphotos.com/photos/ChrisMarronWTC1_2012-03-12.jpg
Photo: Chris Marron

February 17th:
http://www.wtcphotos.com/photos/ChrisMarronWTC1_2012-02-17.jpg
Photo: Chris Marron

[NYguy]

jev (http://www.flickr.com/photos/jev/6830741858/sizes/l/in/photostream/)

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photohound6123 (http://www.flickr.com/photos/40613555@N08/6826701400/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7195/6826701400_f4f197be2a_b.jpg



davitalia (http://www.flickr.com/photos/davidnyc/6977615851/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7194/6977615851_5c2a3a0093_b.jpg



asterix611 (http://www.flickr.com/photos/asterix611/6830124524/sizes/z/in/photostream/)

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kristen mckeithan (http://www.flickr.com/photos/kristenmckeithan/6828772870/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7059/6828772870_702b64cbd0_b.jpg

[2-TOWERS]

jev (http://www.flickr.com/photos/jev/6830741858/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7063/6830741858_720248d4dd_b.jpg



photohound6123 (http://www.flickr.com/photos/40613555@N08/6826701400/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7195/6826701400_f4f197be2a_b.jpg



davitalia (http://www.flickr.com/photos/davidnyc/6977615851/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7194/6977615851_5c2a3a0093_b.jpg



asterix611 (http://www.flickr.com/photos/asterix611/6830124524/sizes/z/in/photostream/)

http://farm8.staticflickr.com/7187/6830124524_a666cb5ee9_z.jpg



http://farm8.staticflickr.com/7047/6830131656_d625ed4994_b.jpg



kristen mckeithan (http://www.flickr.com/photos/kristenmckeithan/6828772870/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7059/6828772870_702b64cbd0_b.jpg
Amazing Pics.... The Mechanical steel beams are different and and there is a connector...wonder what thats for..., But thanks for sharing these pics....

[2-TOWERS]

Here are a couple of pics of my buddy Chris who is an iron worker at the top of WTC1.

Yesterday:
http://www.wtcphotos.com/photos/ChrisMarronWTC1_2012-03-12.jpg
Photo: Chris Marron

February 17th:
http://www.wtcphotos.com/photos/ChrisMarronWTC1_2012-02-17.jpg
Photo: Chris Marron

these pics here are AMAZING......Thanks for sharing....was noticing the brace connector on the beam that looks will go on an angle....BUT WHAT A JOB !!!!

[Roadcruiser1]

When you say red wrappings RoadCruiser, do you refer to how they change te color of the lights, like for the cardinal?

Yes.

[sterlippo1]

great, great shot of Flatiron with 1WTC, my two favorite buildings in the entire universe! awesome!!!:worship::worship::worship:

[scalziand]

http://www.wtcphotos.com/photos/ChrisMarronWTC1_2012-02-17.jpg

these pics here are AMAZING......Thanks for sharing....was noticing the brace connector on the beam that looks will go on an angle....BUT WHAT A JOB !!!!

Like the old WTC towers, 1WTC will have a hat truss. That connector is the start of the hat truss.

[Domamania]

Like the old WTC towers, 1WTC will have a hat truss. That connector is the start of the hat truss.

I am sorry, Pardon my ignorance. What is a hat truss?

[Wrightguy0]

I am sorry, Pardon my ignorance. What is a hat truss?


A hat truss is a specially designed cap of structural steel that transfers some of the load from the exterior walls to the core, it also helps keep the building nice and tight and keeps it from swaying too much in the wind. The Hat Truss also provides a structural anchor for the spire/antenna.

[Roadcruiser1]

I am sorry, Pardon my ignorance. What is a hat truss?

Best to use this video to explain it to you. Seems like the new World Trade Center would have the same design. The explanation of the hat truss begins at 3:50, but I suggest you watch the whole video. Most skyscrapers are built like this nowadays, and it would teach you a lot about engineering and architecture, but ignore conspiracies.

MY7BCXew0UI

[1Boston]

February 17th:
http://www.wtcphotos.com/photos/ChrisMarronWTC1_2012-02-17.jpg
Photo: Chris Marron

Wow that looks so cool. And to all the people complaining about the delays for wind, would you work up there in 40+ mph wind?

[NewYorkDominates]

February 17th:
http://www.wtcphotos.com/photos/ChrisMarronWTC1_2012-02-17.jpg
Photo: Chris Marron

Look at the bottom floor and see how massive it is in comparison to the people on the upper floor.Just a little tease of how the 89th and 90th office floors will look like.

[marshall]

I didn't know 1wtc would have a hat truss like the twin towers, very cool! Definately seems logical though, to help control sway and give extra bracing/support 1368 feet up in the air! Especially on those windy New York days! :cool:

[sw5710]

Would the hat truss begin at 1,181' ? And the observation floors are still above.

[THE BIG APPLE]

Looking good. Everyone living in NYC should agree that today and yesterday were HOT.

[NewYorkSkyline117]

What's a hat truss?

[THE BIG APPLE]

^ A truss designed at a pyramidal point. It redistributes the weight of the building, almost like a tuned mass damper, except it doesn't move, it's part of the design. The hat truss was used in the old Twin Towers.

[hunser]

What's a hat truss?

Look at the previous page... :frog:

[NewYorkSkyline117]

^ A truss designed at a pyramidal point. It redistributes the weight of the building, almost like a tuned mass damper, except it doesn't move, it's part of the design. The hat truss was used in the old Twin Towers.

Thank you

Look at the previous page... :frog:

Okay that's what it does...I meant the structural look of it

[Roadcruiser1]

Would the hat truss begin at 1,181'? And the observation floors are still above.

It is starting at the 92nd floor.

[Roadcruiser1]

What's a hat truss?

I put an entire video on the last page explaining about things like the structure and hat trusses. Stop repeating the same things. Go to the last page and look at the video I posted. It's not a good thing to post things that are going to be redundant because it takes up space.

[sw5710]

It is starting at the 92nd floor.

That is what it looks like. Floor 92 or 1,181'

[SkyscraperAddict]

Thanks for the info and pictures. Their is one error in this and its that the 1 WTC (Freedom Tower) will only be 104 floors, not 108.

[Fluffybagel]

Looking good. Everyone living in NYC should agree that today and yesterday were HOT.

Yeah, I love it. I just walked to the 68th street pier in Brooklyn with a T-shirt. The view of 1wtc, and LM in general there is gorgeous. Maybe next time I'll remember to bring a camera.:)

[alan88]

gov cuomo proclamed this the week honoring cardinal doloan and told teh PA to lit 1 wtc in red again. see this link http://www.governor.ny.gov/press/03122012Cardinal-Dolan

alan

[dchan]

I didn't know 1wtc would have a hat truss like the twin towers, very cool! Definately seems logical though, to help control sway and give extra bracing/support 1368 feet up in the air! Especially on those windy New York days! :cool:

It does make sense when you think about it. All 3 buildings have the same basic structural design - a perimeter structure working in conjunction with the core.

[NewYorkDominates]

It's very similar to the old WTC in almost every aspect.This is most definitely the son of the old WTC.Soon to be the Alpha Male.

[THE BIG APPLE]

Athinaios (http://i141.photobucket.com/albums/r48/Athinaios/IMG_3792.jpg)

http://i141.photobucket.com/albums/r48/Athinaios/IMG_3792.jpg

http://i141.photobucket.com/albums/r48/Athinaios/IMG_3797.jpg

http://i141.photobucket.com/albums/r48/Athinaios/IMG_3799.jpg

http://i141.photobucket.com/albums/r48/Athinaios/IMG_3824.jpg

http://i141.photobucket.com/albums/r48/Athinaios/IMG_3827.jpg

http://i141.photobucket.com/albums/r48/Athinaios/IMG_3840.jpg

http://i141.photobucket.com/albums/r48/Athinaios/IMG_3856.jpg

http://i141.photobucket.com/albums/r48/Athinaios/IMG_3863.jpg

http://i141.photobucket.com/albums/r48/Athinaios/IMG_3864.jpg

[NYguy]

leumund (http://www.flickr.com/photos/leumund/6980475337/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7193/6980475337_295e063bc2_b.jpg



http://farm8.staticflickr.com/7063/6834346204_9693f8fca6_b.jpg



bloggingtom (http://www.flickr.com/photos/bloggingtom/6834458220/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7201/6834458220_992e1b08c5_b.jpg



• estatik • (http://www.flickr.com/photos/estatik/6833780850/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7181/6833780850_a984994870_b.jpg

[sterlippo1]

the top one is a great shot!! thanks NYGuy, i'll used that as my desk top for today, i change everyday when new 1WTC pics are posted:cheers:

[pnapp1]

Looks like fireproofing has resumed. Curtain wall installation shouldn't be far behind. :tup:

[CarlosV]

http://farm8.staticflickr.com/7189/6836303914_3e06ea6f89_b.jpg (http://www.flickr.com/photos/ceva321/6836303914/)
DSC_0131 copy (http://www.flickr.com/photos/ceva321/6836303914/) by Ceva321 (http://www.flickr.com/people/ceva321/), on Flickr

[SoaringSkylines]

I love when the cranes sometimes stand up vertical beside each other! Sort of gives us a resemblance of what the spire/mast/antenna will look like on top!

[Don098]

They aren't going to start again until the tower reaches high enough for the black netting to be removed. It is going to take a while before we see any progress.

That doesn't make any sense to me. I've watched this entire building's construction on a daily basis and this is, by far, the largest amount of black netting on that building with respect to the tower's height. Fireproofing was always MUCH closer to the steel work than it is now, so what's the hold-up? New steel has been installed for the past month or so...that delay is over. Why wasn't the re-start concurrent with the rest of construction? They're like 15 to 20 floors away from the steel work...there's no way they're going to catch them.

[Roadcruiser1]

That doesn't make any sense to me. I've watched this entire building's construction on a daily basis and this is, by far, the largest amount of black netting on that building with respect to the tower's height. Fireproofing was always MUCH closer to the steel work than it is now, so what's the hold-up? New steel has been installed for the past month or so...that delay is over. Why wasn't the re-start concurrent with the rest of construction? They're like 15 to 20 floors away from the steel work...there's no way they're going to catch them.

That's because the steel work has been delayed for so long it is going to take a while before the rest of the work can catch up.

[upNaway]

Not being funny or nothing. but i asked the same question a year or so ago will this building have a hat truss like the original wtc ?, And the person who answered it was zensteeldude god rest his soul, he told me this building would NOT have a hat truss due to the core being incased in concrete, the building wouldnt need a hat truss because the core would hold it all together, im not sure if the plan has changed but thats what he honestey told me. R.I.P Zen

[Roadcruiser1]

Not being funny or nothing. but i asked the same question a year or so ago will this building have a hat truss like the original wtc ?, And the person who answered it was zensteeldude god rest his soul, he told me this building would NOT have a hat truss due to the core being incased in concrete, the building wouldnt need a hat truss because the core would hold it all together, im not sure if the plan has changed but thats what he honestey told me. R.I.P Zen

It looks like the design has been changed so now it would have a hat truss. It's not a bad thing to have a hat truss. You either use that option to minimize wind sway or another method called a tuned mass damper.

Here is a detailed picture of a hat truss.

http://www.sharpprintinginc.com/911/images/photoalbum/10/hat_trusses.JPG

Here is a diagram of a tuned mass damper. This design was use in Taipei 101.

http://www.images.critiquethis.us/architecture/architecture/the-heights-anatomy-of-a-skyscraper/the-heights-anatomy-of-a-skyscraper-diagram.jpg

[upNaway]

yeah i understand the use of both idea's i just remember talking to zen about it, if you go to page 484 you will see all the details he was talkin about but awwesome 1 wtc is getting a hat truss its gonna be like an honour to the old wtc :)

[NewYorkSkyline117]

don't very few skyscrapers in the USA have tuned mass dampers? I know the Citigroup Center, the one with the slanted roof, was the first one in North America to get one.

[marshall]

Yeah, I had heard awhile back that 1wtc wouldn't have a hat truss. Cool to see that they are putting one in. I always figured they would, regardless of the concrete core, because of the sway that a building of 1wtc's height can have in high winds..Another tidbit, correct me if I'm wrong, but Taipei 101's famous damper is actually more to stabilize it against potential earthquakes because it was built in a very earthquake prone area. So I thought dampers were more for earthquake stabilization than wind stabilization, since the weight of the damper acts as a strong central stabilizer in the face of ground shaking...So it makes sense that 1WTC will have a hat truss and not a damper.

[Roadcruiser1]

Yeah, I had heard awhile back that 1wtc wouldn't have a hat truss. Cool to see that they are putting one in. I always figured they would, regardless of the concrete core, because of the sway that a building of 1wtc's height can have in high winds..Another tidbit, correct me if I'm wrong, but Taipei 101's famous damper is actually more to stabilize it against potential earthquakes because it was built in a very earthquake prone area. So I thought dampers were more for earthquake stabilization than wind stabilization, since the weight of the damper acts as a strong central stabilizer in the face of ground shaking...So it makes sense that 1WTC will have a hat truss and not a damper.

Nope. Taipei isn't earthquake central like Japan. Taipei 101's mass damper was designed for the typhoons, or what we call hurricanes, but you are correct that mass dampers can be used in buildings to make them earthquake resistant.

[Roadcruiser1]

don't very few skyscrapers in the USA have tuned mass dampers? I know the Citigroup Center, the one with the slanted roof, was the first one in North America to get one.

The John Hancock Center in Chicago has a tuned mass damper also, and so does the John Hancock Tower in Boston.

Also for those that are curious this is how the dampers work. This is for the John Hancock Tower in Boston. From the Boston Globe.

Two 300-ton weights sit at opposite ends of the 58th floor of the Hancock. Each weight is a box of steel, filled with lead, 17 feet (5.2 m) square by 3 feet (0.9 m) high. Each weight rests on a steel plate. The plate is covered with lubricant so the weight is free to slide. But the weight is attached to the steel frame of the building by means of springs and shock absorbers. When the Hancock sways, the weight tends to remain still, allowing the floor to slide underneath it. Then, as the springs and shocks take hold, they begin to tug the building back. The effect is like that of a gyroscope, stabilizing the tower. The reason there are two weights, instead of one, is so they can tug in opposite directions when the building twists. The cost of the damper was $3 million. The dampers are free to move a few feet relative to the floor.

[QUEENSNYMAN]

FROM: NYBOY75

http://www.youtube.com/watch?v=wbbmxB8RcTw

[sw5710]

So the observation levels will be at the same area as the steel web that makes up the hat truss. I wonder if that will cut down on the space on those floors. I was just looking at that picture above.

[plinko]

Nope. Taipei isn't earthquake central like Japan. Taipei 101's mass damper was designed for the typhoons, or what we call hurricanes, but you are correct that mass dampers can be used in buildings to make them earthquake resistant.

Incorrect. T101 had to be designed to both be flexible enough to deal with earthquakes and rigid enough to deal with wind pressures. The tuned mass damper works in conjunction with the huge mega-columns to do both.

Taiwan is a major earthquake zone.

[Otie]

Zen would have died of frustration if he were still alive, almost everything said in the last few pages is either incorrect or inaccurate. This Tower is totally different compared to the Twin Towers, the configuration of the structure is nothing close to the one envisioned by LERA. What we're seeing right now is not a hat truss, this tower doesn't need one, but a redistribution of loads to different paths. The observation deck will be almost column free space, only having 4 small columns that will carry a portion of the gravity load of the 101st floor slab (since this floor doesn't extend completely to the perimeter columns).

You are assuming that Tower One because of it's hight and the spire requires the same structural elements as the Twins. Your assumption is wrong.

Nowhereman1280 is rather close to the mark.

The core takes a bit more than half the gravity load of the entire tower and the spire sits directly on top of the core. No need for a hat truss, the core takes all the gravity load of the spire.

The perimeter steel takes most of the wind loads. The spire is anchored to the perimeter steel via 8 six inch diameter Kevlar cables. No need for a hat truss the perimeter steel takes all the wind load. (Kevlar because it is invisible to electromagnetic radiation.)

Each exterior wall of the tower is called a wind frame, it has to be thought of as a solid plane of steel because that is how it reacts under load.

One last thing, each floor of Tower One is also a strong structural element in and of itself securing the core to the perimeter. (The ends of the main floor beams are actually dovetailed into the concrete walls of the core, something impossible to do if the core were to rise ahead of the floors.)
(Never expect a non-technical answer to a technical question-- Albert Einstein)

[alan88]

That's because the steel work has been delayed for so long it is going to take a while before the rest of the work can catch up.

It was stopped due to winter months and the need to heat area where fireproofing is being applied. It was planned to restart mid march, who could have predicated the crazy weather we are having where it 30 degrees above normal. But curtain wall should start in a week or so

alan

[NewYorkSkyline117]

So if it weren't for such a warm winter, we'd be farther behind then where we are now?

[alan88]

So if it weren't for such a warm winter, we'd be farther behind then where we are now?

No this weird weather impacted much more than previous winter with all the snow, every time temps go up and down dramatically, it is a front coming through which brings winds and that means cranes can't work. Remember last Tuesday when it was in the 30s and Thursday in the 60's. The project lost more than a month due to the weather. Even today we had to shut the cranes down for an hour and half due to winds. Safety comes first.

[Noll]

WTC Progress on Twitter (http://twitter.comWTCProgress):
http://a.yfrog.com/img864/1117/dohot.jpg
http://a.yfrog.com/img741/205/3rvje.jpg

[hunser]

^^ Some more: https://twitter.com/#!/WTCProgress

https://p.twimg.com/AoCbSyECAAACYJj.jpg:large

https://p.twimg.com/AoCa_LDCIAAhJiL.jpg:large

https://p.twimg.com/AoCasswCAAA3Mhi.jpg:large

https://p.twimg.com/AoCaiBeCMAAwgPA.jpg:large

https://p.twimg.com/AoCbHkYCIAASAjr.jpg:large

[CarlosV]

Steel erected!!!!

http://farm8.staticflickr.com/7056/6838874198_400fde8e1f_b.jpg (http://www.flickr.com/photos/ceva321/6838874198/)
DSC_0140 copy (http://www.flickr.com/photos/ceva321/6838874198/) by Ceva321 (http://www.flickr.com/people/ceva321/), on Flickr

.
http://farm8.staticflickr.com/7048/6838884994_ae8cbcd731_b.jpg (http://www.flickr.com/photos/ceva321/6838884994/)
DSC_0140 1copy (http://www.flickr.com/photos/ceva321/6838884994/) by Ceva321 (http://www.flickr.com/people/ceva321/), on Flickr

[NewYorkSkyline117]

Looking good...so this will be 1,248 feet?

[Ed007Toronto]

Awesome photos

[NewYorker2009]

Niceee Carlos!!!!!!!!! I think those core columns extend to 93M (1,223' 6"). The next set of perimeter columns will extend to the 100th floor.

[Tru Bert]

Ya its awesome, there really working hard this month to make up the delay. I'd say it will top out mid-Late April at this rate! Also, nice pic carlos!

[scalziand]

Zen would have died of frustration if he were still alive, almost everything said in the last few pages is either incorrect or inaccurate. This Tower is totally different compared to the Twin Towers, the configuration of the structure is nothing close to the one envisioned by LERA. What we're seeing right now is not a hat truss, this tower doesn't need one, but a redistribution of loads to different paths. The observation deck will be almost column free space, only having 4 small columns that will carry a portion of the gravity load of the 101st floor slab (since this floor doesn't extend completely to the perimeter columns).

Designs change. At this presentation (http://www.bsces.org/index.cfm?pk=custom&ac=viewEventDetails&eventId=BS_CON/STRUCT_22812) the lead engineer referred to it as a hat truss, required to limit the wind deflection.

[Noll]

More pics from WTC Progress on Twitter (http://twitter.com/WTCProgress): :)
http://p.twimg.com/AoDBUEHCMAAIljF.jpg:large
https://p.twimg.com/AoDBhq-CMAATSxN.jpg:large

[upNaway]

i told you thats what zen said :)

[marshall]

Wow those views are amazing!! Just like the views from the old Twin Towers :)
And they haven't even made it up the the observation floors yet! :D

[sw5710]

Niceee Carlos!!!!!!!!! I think those core columns extend to 93M (1,223' 6"). The next set of perimeter columns will extend to the 100th floor.

Yes 93M 1,223' 6'' + splices. Equal to the inside 102nd floor of ESB at 1,224'

[MadGnome]

That "not really a hat truss" is mainly for the horizontal loads, both wind and quake, from the "not really a spire without it's dress" spire. The floor connections are a much greater part of the way the core loads transfer to the walls than in the old WTC.
And, although nobody has mentioned it, I wouldn't be surprised if the deletion of the spire cladding wasn't partly to reduce the windload and reduce the structure requirements.

[NYguy]

knobberhead (http://www.flickr.com/photos/knobberhead/6983674973/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7206/6983674973_dc687ee928_b.jpg



http://farm8.staticflickr.com/7196/6974658109_5bd8a04301_z.jpg



Images By Madeline (http://www.flickr.com/photos/23956233@N04/6833675894/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7043/6833675894_f9781d8fe3_b.jpg



~vivian~ (http://www.flickr.com/photos/viviansville/6979908477/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7037/6979908477_364da6456e_b.jpg



effie.n (http://www.flickr.com/photos/77841605@N07/6836683448/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7055/6836683448_973fbd2df4_b.jpg

[SoaringSkylines]

^^ Some more: https://twitter.com/#!/WTCProgress

https://p.twimg.com/AoCbSyECAAACYJj.jpg:large

My goodness! I almost collapsed when I saw this picture! I haven't seen this angle of Jersey City since the Twin Towers once stood! JC's skyline has DEFINITELY changed since 2001!
And the 781 ft Goldman Sachs Tower makes it look not that tall.

Will this be a close view from the observation deck? Or will it appear in the observation deck higher than this?

[CarlosV]

^^^
a bit higher !! :rolleyes:

[Fishman92]

Nice to see this rising. Looks huge! xD

Anyways, British PM was at the WTC today, signing his name on a wall. He just so happens to be the MP for the town I live in :tup:.

[sw5710]

It looks like core columns are extending to 93M or 1,223' 6'' + splices

[WTCman7301]

http://farm8.staticflickr.com/7202/6983441307_1040049f14_z.jpg

This picture is from yesterday and noticed that they're removing the boards on the 20th floor, so they are probably getting ready to install the glass fins on the base of the tower.:)

[THE BIG APPLE]

Twitter (https://twitter.com/#!/WTCProgress)

https://p.twimg.com/AoCa_LDCIAAhJiL.jpg:large

https://p.twimg.com/AoCasswCAAA3Mhi.jpg:large

https://p.twimg.com/AoCaiBeCMAAwgPA.jpg:large

https://p.twimg.com/AoCbHkYCIAASAjr.jpg:large

https://p.twimg.com/AoCef4kCIAEJoaL.jpg:large

[1Boston]

knobberhead (http://www.flickr.com/photos/knobberhead/6983674973/sizes/l/in/photostream/)

http://farm8.staticflickr.com/7206/6983674973_dc687ee928_b.jpg



http://farm8.staticflickr.com/7196/6974658109_5bd8a04301_z.jpg


I love these two pictures, especially the first one. In the second one though, it looks like 4wtc is not that much shorter than 1wtc considering it still has more to go, but so do both of them. It will be interesting to see the difference in height when they're all completed.

[THE BIG APPLE]

^ Yeah, there will only be a 300 (some) foot difference.

[Roadcruiser1]

There has been more news recently on the security at the World Trade Center including One World Trade Center...

The NYPD Is Ruining the World Trade Center, and Maybe Downtown, Too
By Matt Chaban 3/14 12:58pm

http://www.observer.com/files/2012/03/image640x480-600x450.jpg

One of the most exciting features of Daniel Libeskind’s master plan for the World Trade Center was not the soaring towers he had designed, with their cascading arrangement and “Wedge of Light.” What really thrilled New Yorkers was the simple fact that he was going to restore Greenwich and Fulton streets to the Manhattn grid, obliterated decades prior by David Rockefeller and the original Trade Center.

But rather than a grand boulevard, if the NYPD has its way, the street will be a wasteland, realizing the police state many had feared the World Trade Center would become.

The NYPD unveiled its WTC security plan Monday night, and according to DNAinfo, there will be security checkpoints sprinkled throughout the site.

The four entry points include: Washington Street, between Barclay and Vesey streets, for 7 World Trade Center’s loading docks; West Broadway, between Barclay and Vesey streets, for livery and private vehicles; Trinity Place, at Liberty Street, for tour buses; and West Street, at Liberty Street, for vehicles going underground to make deliveries or park, [Counterterrorism Lt. David] Kelly said.

At each entry point, vehicles will first pass through a credentialing zone, where drivers will have to show that they have legitimate business on the site, and then they will go through security screening, Kelly said.

While residents may be able to register their cars as trusted vehicles and circumvent some of the security, the NYPD has not yet determined the details, and it may be especially difficult for those who rely on cabs. Kelly said the security would be more advanced than the measures now in place in areas like the New York Stock Exchange, where vehicles are checked with dogs and mirrors.

This is not the first time the police have mucked about the World Trade Center, either. The NYPD called for the concrete bunker that many fear will dehumanize the base of 1 World Trade Center—it is hoped a new facade will solve that—and there are concerns from locals, tourists and office workers (Hey, Graydon!) that the whole feel of the neighborhood will be that of a locked-down compound, with M-16-wielding cops on every corner.

Locals, even developers, are counting on the reconnection of Greenwich Street to help revive the area south of the World Trade Center, which has languished first after being cut off from the rest of the city by the original, and then by a decade of construction and security cordons. Neighbors who have had to suffer, and thought they might finally be in the clear once construction was completed, are understandably enraged, according to DNAinfo.

This is not to ignore the fact that the World Trade Center has been attacked twice, now, and will no doubt remain a prime target for terrorists seeking to send a message. But at a certain point, it must be asked: at what cost freedom of movement in the city?

http://www.observer.com/2012/03/the-nypd-is-ruining-the-world-trade-center-and-maybe-downtown-too/

[THE BIG APPLE]

I also read in the Post that businesses are pissed because of the safety, and how it will ruin their business.

[Roadcruiser1]

I am certain if this much security goes through the streets around the new World Trade Center would be as empty as the Austin Tobin Plaza at the original World Trade Center. I had a talk with some people today and that is what we agreed on. Both designs killed the idea of street life. The only difference is the new World Trade Center has too much security and the old World Trade Center was because of poor planning making the plaza unattractive.

[NewYorkSkyline117]

It would make people feel safer though..just wondering but do any members here remember the view from the observation deck? I never went

[Tall guy 31]

Steel erected!!!!

Wow, this seemed like a realllll quick turn around this week. Seems like only a few days ago they started the last jump. I love it!!!!