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Old December 15th, 2010, 11:57 PM   #18281
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Quote:
Originally Posted by Scrapernab2 View Post
The speed of construction of the ESB was amazing. Different era with almost no safety rules and lots of 'low cost' labor available. I think the wait has been worth it for 1WTC. They seem to be building a structure that will endure. I like that.

Sometimes things built long ago are contructed better and faster. Here's an incredible fact about the Pyramid at Giza from Wikipedia:

The mass of the pyramid is estimated at 5.9 million tonnes. The volume, including an internal hillock, is roughly 2,500,000 cubic metres. Based on these estimates, building this in 20 years would involve installing approximately 800 tonnes of stone every day. Similarly, since it consists of an estimated 2.3 million blocks, completing the building in 20 years would involve moving an average of more than 12 of the blocks into place each hour, day and night. That is: moving each of those stones into perfect position every 300 seconds! IF they worked 24/7. If they worked during daylight hours only, that's one enormous block every two and a half minutes. What time does it take for a modern crane to hoist a block into position?
300 seconds is 2 1/2 minutes?
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Old December 16th, 2010, 12:14 AM   #18282
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5 minutes.

I'm going to the area tomorrow. Might take pictures
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Old December 16th, 2010, 12:16 AM   #18283
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300 seconds is 5 minutes, which is how long it would take for each block to be placed if the Egyptians were working 24 hours a day, but if they were placing blocks only during the day time, which is 1/2 of 24 hours, then they would take half the time for each block, 150 seconds, or 2 1/2 minutes.

Incredible glass! it will look amazing when they have about 10 floors done, so we can see what a large expanse of glass will look like.
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Old December 16th, 2010, 01:57 AM   #18284
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From WTCProgress.com















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Old December 16th, 2010, 02:23 AM   #18285
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WTC1 Reaches 600 ft.
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Old December 16th, 2010, 02:49 AM   #18286
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Damn their fast looking good...
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Old December 16th, 2010, 03:54 AM   #18287
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Great update, ILoveNYC. By next Christmas, this baby will be very close to complete.
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Old December 16th, 2010, 05:47 AM   #18288
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lev52=612ft/187m

same heigth as former worlds tallest
SINGER BLDG OF 1908



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Old December 16th, 2010, 10:08 AM   #18289
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That article says 104 floors. It's 108, correct?
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Old December 16th, 2010, 10:26 AM   #18290
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I don't get the article that says it is halfway - 600ft is quite a way short of halfway for the superstructure. Disregarding the mast.. or am I missing something??
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Old December 16th, 2010, 10:46 AM   #18291
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Quote:
Originally Posted by Turbosnail View Post
I don't get the article that says it is halfway - 600ft is quite a way short of halfway for the superstructure. Disregarding the mast.. or am I missing something??
I couldn't find it too but If the tower is 1776 ft high, then 888 ft is the half , and 600 ft is about 33% of the whole height, but I think they are not counting the antenna which is more than 100 ft. If so, then yes it's halfway.

Last edited by hadeer992; December 16th, 2010 at 11:02 AM.
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Old December 16th, 2010, 11:57 AM   #18292
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Originally Posted by ILoveNYC View Post
And from LowerManhattan.info:
1 World Trade Center
Installation of the curtain wall at the 20th
Tower steel is now above floor 50
Concrete is now being installed above floor 42
I vaugely recall reading a post recently (from Zen ?) that said they were using thicker steel to allow the steel to run further ahead of the core, up to 10 floors (if I remember right).

If so, then those numbers mean the steel is now almost 10 floors ahead and so will have to slow down for the concrete again - maybe is already slowing down.

Not good news.

Why does the concrete always seem to be the blocker on this building ?
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Old December 16th, 2010, 12:21 PM   #18293
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Quote:
Originally Posted by hadeer992 View Post
I couldn't find it too but If the tower is 1776 ft high, then 888 ft is the half , and 600 ft is about 33% of the whole height, but I think they are not counting the antenna which is more than 100 ft. If so, then yes it's halfway.
Not even when you count height by just floors...Take a look at Culwulla's diagram..

Only lookin' by the number of floors which is 52..That's the only fact of being a halfway..
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Old December 16th, 2010, 12:25 PM   #18294
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Quote:
Originally Posted by hadeer992 View Post
I couldn't find it too but If the tower is 1776 ft high, then 888 ft is the half , and 600 ft is about 33% of the whole height, but I think they are not counting the antenna which is more than 100 ft. If so, then yes it's halfway.
Even not counting the antenna though it is much less than halfway - maybe they mean the core or something but looking at the skyscraperpage diagram 600ft is still way short of halfway... meh, whatever, I guess debating the current height is not going to effect the build schedule anyway.
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Old December 16th, 2010, 01:51 PM   #18295
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Halfway to ROOF....not spire/antenna.
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Old December 16th, 2010, 02:47 PM   #18296
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Figuring the height by floor number would be absurd. By that logic, putting up the 20th floor made the building more than three times as tall, since the previous floor was 6.
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Old December 16th, 2010, 02:49 PM   #18297
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Halfway to ROOF....not spire/antenna.
ROOF = 1,368 feet (417 m)

Current top = 612ft (187m)

"halfway" = basic arithmetic fail.
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Old December 16th, 2010, 02:57 PM   #18298
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So they finally finish the building? or is it still consider under contruction?
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Old December 16th, 2010, 03:31 PM   #18299
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So they finally finish the building? or is it still consider under contruction?
Yes, the official opening is tomorrow.
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Old December 16th, 2010, 03:48 PM   #18300
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So they finally finish the building? or is it still consider under contruction?
Looking at the pictures and construction progress diagram on THIS PAGE didn't occur to me either! Sarcasm font off
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