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Old December 22nd, 2010, 09:16 PM   #18481
Gendo
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ophizer, you're alright. You guys/girls just need to understand that glass is an amorphous material with a relatively high thermal expansion rate and uneven thermal transfer characteristics. It is physically impossible to make a panel of structural glass perfectly flat, and the larger the panel, the more difficult it is to make it at least reasonably flat.

For example, telescope mirrors have to be made very thick in order to try and counteract the uneven thermal expansion characteristics that glass/quartz has. Even then, slight differences in temperature between the center and the edge cause distortions in the image produced. Telescope engineers go to great lengths to design cooling systems that keep the mirror evenly cooled because even less than a 1 degree difference in temperature causes distortions. This even happens with small amateur telescopes like my C11.

1WTC's glass is likely costing 1.5-2 times as much per panel as the Shard's glass because they are 2 feet taller and a foot wider.
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Old December 22nd, 2010, 09:21 PM   #18482
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Quote:
Originally Posted by Gendo View Post
ophizer, you're alright. You guys/girls just need to understand that glass is an amorphous material with a relatively high thermal expansion rate and uneven thermal transfer characteristics. It is physically impossible to make a panel of structural glass perfectly flat, and the larger the panel, the more difficult it is to make it at least reasonably flat.

For example, telescope mirrors have to be made very thick in order to try and counteract the uneven thermal expansion characteristics that glass/quartz has. Even then, slight differences in temperature between the center and the edge cause distortions in the image produced. Telescope engineers go to great lengths to design cooling systems that keep the mirror evenly cooled because even less than a 1 degree difference in temperature causes distortions. This even happens with small amateur telescopes like my C11.

1WTC's glass is likely costing 1.5-2 times as much per panel as the Shard's glass because they are 2 feet taller and a foot wider.

Thanks.
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Old December 22nd, 2010, 10:06 PM   #18483
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wait, the WTC 1 glass panels are bigger than the glass panels on The Shard?
Wow, that really shows the scale of this building, because in the photos of the Shard, the glass panels appear to be really big, but the size of WTC 1 makes its glass panels look small.
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Old December 22nd, 2010, 10:09 PM   #18484
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Awesome stuff man..Thanks a lot...Can I ask you to take more shots like this one, if it's possible next time you'll go down? I would like to see this ground level of the lobby and stuff around...Thanks..
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Old December 22nd, 2010, 10:16 PM   #18485
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Massive and impressive.
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Old December 23rd, 2010, 04:11 AM   #18486
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What?! They are the footprints of the original World Trade Centres. I think it would be disrespectful to build something on top of them and I can't imagine many New Yorkers wanting a carbon copy of the World Trade Centres to begin with...

I'm sorry but you have a seriously warped vision for that area and all I can say is thank god you're not in charge. Stick to your 10 meter Sao Paulo concrete messes.
This is envy. The tallest building in Sao Paulo (BR), has less than 200 feet tall.
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Old December 23rd, 2010, 03:05 PM   #18487
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This is so awesome. I can't wait to see this thing finished. One question though, when are they gonna start putting on the bottom facade?
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lets just build a massive block of pure concrete.... nobody will be able to knock that down.
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Old December 23rd, 2010, 03:14 PM   #18488
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With all the activity at ground level, they might save it for last so as to use the space efficiently and avoid damage to the bottom facade. At least that's what they're doing at a skyscraper in downtown The Hague which sits on a tiny piece of land (there's very little room for maneuvering big heavy cranes and trucks).
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Old December 23rd, 2010, 08:13 PM   #18489
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One question though, when are they gonna start putting on the bottom facade?
Early 2012.
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Old December 24th, 2010, 01:22 AM   #18490
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great update.

Any one of you know how tight is the security in the construction site?
it's virgin tight, I wouldn't try to **** wit it if I was you.
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Old December 24th, 2010, 06:31 AM   #18491
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9/11 ‘Survivor Tree’ Spreads Its Branches Over the World Trade Center Once Again

Images from DNAinfo showing 1WTC from the National Sept. 11 Memorial






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Old December 24th, 2010, 12:47 PM   #18492
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I'm new to this wonderful site and wanted my first post to be in this thread. I loved the old World Trade Center--were probably my favorite buildings and had the privilege of standing on the roof, and now I can't wait to see the Freedom Tower completed. I love architecture and especially skyscrapers so this message board is really great. So Merry Christmas and happy holidays to everyone
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Old December 24th, 2010, 02:00 PM   #18493
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I'm new to this wonderful site and wanted my first post to be in this thread. I loved the old World Trade Center--were probably my favorite buildings and had the privilege of standing on the roof, and now I can't wait to see the Freedom Tower completed. I love architecture and especially skyscrapers so this message board is really great. So Merry Christmas and happy holidays to everyone
Good for you DV77. I am following this one closely too. Happy holidays everyone.
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Old December 24th, 2010, 02:03 PM   #18494
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Wow.....brand spankin new shiny glass supertall right in lower manhattan, brand new transit hub linked to fulton street all underground for blocks, brand new memorial, underground and above ground mall, two waterfalls, and lots more...... the terrorists cant beat us we just get stronger. The spire is basically going to be a middle finger pointing towards the middle east from 1776 feet in the air surround by a brand new couple blocks of class A office space. New york is amazing.
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Old December 24th, 2010, 04:36 PM   #18495
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Greenwich Boy, WiredNY






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Old December 24th, 2010, 07:30 PM   #18496
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Damn that glass looks great
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Old December 24th, 2010, 08:44 PM   #18497
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From Wednesday 12/22







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Old December 25th, 2010, 02:24 AM   #18498
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Today - Christmas Eve, December 24, 2010





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Old December 25th, 2010, 02:50 AM   #18499
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Quote:
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From Wednesday 12/22


perfect, absolutely perfect....wish it looked like this from every angle
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Old December 25th, 2010, 04:46 AM   #18500
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Beautiful!
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