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Old January 29th, 2010, 11:06 PM   #12761
Dexter Morgan
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I was just in Lower Manhattan, walked around the site, thing is huge already
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Old January 30th, 2010, 04:41 AM   #12762
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My favorite tower ..........
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Old January 30th, 2010, 04:52 AM   #12763
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Hello, I'm from Argentina and wanted to know who has the WTC steel structure that can withstand fire and other things that can cause people undue and It would begin with the first story "usable"
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Old January 30th, 2010, 09:18 AM   #12764
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Im sorry, i dont quite understand that question... any chance you could re word it to help us answer it?
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Old January 30th, 2010, 11:26 AM   #12765
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It sounded like:
What extra protection do the office floors of 1WTC have against terrorist attacks/disasters?
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Old January 30th, 2010, 11:55 AM   #12766
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Quote:
Originally Posted by McGrupp34 View Post
Im sorry, i dont quite understand that question... any chance you could re word it to help us answer it?
I think he's asking whether this new tower can withstand heat from a huge fire. If so it would be better than the previous towers which buckled. Also if it could withstand other disasters.

The answer is that it depends on the structure of the tower. The previous one had trusses which proved to be inadequate as the floors broke off from the core at the point of the bolts and then fell down upon each other, building up the weight on the floors below. Stress increased on the outer wall due to the buckled floors being angled down and a depletion of structure where the floors had come totally loose and due to the plane hitting the corner of the South tower and the combined effects of the above the tower gave way at that point.

The North tower with the aerial was due to a weakening around the top reinforced steel roof which held up and kept the core in place, distributing the weight in a balanced way. Once that balance was disturbed and the core had to carry its own weight and due to the compromised core levels the building collapsed with the core accelerating first, which in turned dragged down the floors and outer walls.

Both towers were extremely susceptible to fire. An office fire out of control could have taken one tower down in the due course of time.

It is doubted whether such tall structures could keep standing indefinitely after similar plane crashes and conservative opinion is that towers can now be built to keep up for 8-24 hours. Emphasis is on maintaining the structure for sufficient time to evacuate all those inside. Obviously all concrete structures such as the Burj Khalifa may be able to completely withstand a plane crash. IMO all tall structures are subject to collapse as a result of unbalanced weight distribution and a failure at some point to keep up that weight.

I haven't studied the new WTC diagrams so don't know how far up the concrete goes. The more reinforced concrete there is the better the integrity of the structure. One thing that will always occur is pancaking if the top structure can be toppled and act as a sledgehammer to compress the floors below. Which is why earthquakes are more of a danger to skyscrapers than terrorism. The effect of an earthquake isn't localised but felt by the whole tower. The domino effect, fire, burst gas and water mains, panic, etc. exceed anything that terrorists could ever plan.
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Old January 30th, 2010, 02:19 PM   #12767
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It is Saturday morning, new beams are going up right now and a lot of steel is laying on the 6th floor, including some really massive red things. Probably not the corner nodes though, the Big Reds don't seem to have moved.
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Old January 30th, 2010, 02:39 PM   #12768
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Quote:
Originally Posted by C30 View Post
It is Saturday morning, new beams are going up right now and a lot of steel is laying on the 6th floor, including some really massive red things. Probably not the corner nodes though, the Big Reds don't seem to have moved.
Indeed some interesting things are going on.



I wonder if the big red beam laying on the floor is one solid piece? Its huge!
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Old January 30th, 2010, 03:30 PM   #12769
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Big part delivered to the site...
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Old January 30th, 2010, 03:44 PM   #12770
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It's really progressing now. Good to see after so many years.
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Old January 30th, 2010, 05:42 PM   #12771
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Quote:
Originally Posted by McGrupp34 View Post
Im sorry, i dont quite understand that question... any chance you could re word it to help us answer it?

Sorry but my English is not very good but thanks ... I always liked the previous towers and rebuild it makes me happy.
I have also seen that I already explained a lot, since as you greetings from Argentina
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Old January 30th, 2010, 06:00 PM   #12772
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Its growing a bit faster, thats good news, amazing pics, thx !
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Old January 30th, 2010, 08:54 PM   #12773
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Can we delete post # 12766 it's so distrubing especially for someone who lives across the street from the site.


Thank you
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Old January 30th, 2010, 10:41 PM   #12774
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hmm guys with recent dip in new york office rental market.

will this building be commercial successful?
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Old January 30th, 2010, 11:07 PM   #12775
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You build office space for the future not the present. Yes the economy is in a funk right now but it won't always be that way. This tower won't be complete until 2013 so hopefully things will be much better by then.
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Old January 31st, 2010, 12:31 AM   #12776
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Quote:
Originally Posted by mud777 View Post
I love what is planed for the future. But.
You just can't beat this.

Really ?

I only see 2 tall grey boring boxes.
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Old January 31st, 2010, 12:41 AM   #12777
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We have a Skybar forum for such discussions. Let's keep things related to 1WTC. If a post is offensive, use the red triangle icon under their screen name. Don't fill the thread with useless posts.

By GreenwichBoy, WNY, 1-30-10.







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Old January 31st, 2010, 12:46 AM   #12778
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It wanted to see more progress is quite fast for what I have seen!!!!!!!!!!
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Old January 31st, 2010, 12:56 AM   #12779
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Quote:
Originally Posted by VubStudent View Post
Really ?

I only see 2 tall grey boring boxes.

then I feel sorry for you
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Old January 31st, 2010, 03:24 AM   #12780
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This tower is growing faster than i thought. I cant wait to see the cladding.
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