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Old June 14th, 2010, 12:40 AM   #4341
patrykus
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Ehh, formalists Ok, square is simetric, triangle isnt. But we were talking about asymetric distribution of weight. And since both core, and circle around the supercolumns are simetric. And outer layer is twisting close-to-triangle-thing which is small percent of the whole towers weight, the structural beams doesn't have to be different, becouse distribution of weight is quite equal for all of them. Got it?
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Old June 14th, 2010, 02:22 AM   #4342
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The tower is anything but symmetric.
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Old June 14th, 2010, 03:15 AM   #4343
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I think they purposely designed the tower's structure to be symmetrical to make it easier to build, and the curved cladding (which obviously isn't symmetrical) is just added around it, and wouldn't weigh much, so there would be no need to build the structure in a non symmetrical way because there isn't much weight involved outside the symmetrical structure.
I think the reason why it doesn't have a 90 degree rotational symmetry is because of the gaps in the core for the doors to get into it. look carefully at the core in the diagram in patrykus' post.
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Old June 14th, 2010, 05:19 AM   #4344
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The cladding layer is definitely asymmetrical from that diagram 0.o, you can find a symmetry on each of the 8 sections but when you line them up together as one, they become asymmetrical??

Btw in the photo from last page, the orange box shows the concrete blocks for level B4, i guess theres still a lot work to do for the basement.
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Old June 14th, 2010, 03:15 PM   #4345
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Quote:
Originally Posted by kix111 View Post
The cladding layer is definitely asymmetrical from that diagram 0.o, you can find a symmetry on each of the 8 sections but when you line them up together as one, they become asymmetrical??
I think those two thinks are the most important when we are talking about weight distribution. First that each of the sections are quite simmetrical, and second that they are twisting all trhough the tower. And that I think provides quite equal distribution of weight to the supercolumns, especialy at the bottom.

My point was that people may confuse this tower as some bent tube, and this tower is nothing like that (its just impression came from twist). Check, the view from the top. Maybe its not symmetrical but perfectly regular:

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Old June 14th, 2010, 06:20 PM   #4346
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when you're talking about a tower that is 600m+ tall, weight isn't as critical so much as wind is. the unique shape of the facade could very well (read: will) lead to unsymmetrical forces exerted on the substructure. However due to the factor of safety built into these things, the structure will be likely built 'symmetrical' based upon the highest anticipated loading.

ie, everybody's partly correct.
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Old June 15th, 2010, 04:26 AM   #4347
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Quote:
Originally Posted by lotec View Post
when you're talking about a tower that is 600m+ tall, weight isn't as critical so much as wind is. the unique shape of the facade could very well (read: will) lead to unsymmetrical forces exerted on the substructure. However due to the factor of safety built into these things, the structure will be likely built 'symmetrical' based upon the highest anticipated loading.

ie, everybody's partly correct.
I have sat in on several discussions and presentations regarding this tower with the structural engineer and architect (last fall as a extra credit for my CiE and Arch classes), and the tower was designed specifically for wind loads, factoring in all of the surrounding buildings into the design.
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Old June 15th, 2010, 04:39 PM   #4348
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Old June 15th, 2010, 06:22 PM   #4349
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what a dense and dirty looking city. much more of a sprawl than even los angeles
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Old June 15th, 2010, 06:39 PM   #4350
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shangai

what a f...k !!! that's an awsome pic....! is a really big city..
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Old June 15th, 2010, 06:45 PM   #4351
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Quote:
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Wow I'm loving this city even more!

Quote:
Originally Posted by hellrazor650 View Post
what a dense and dirty looking city. much more of a sprawl than even los angeles
they have faster traffic flow and great public transpo system though
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Old June 15th, 2010, 07:52 PM   #4352
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Quote:
Originally Posted by hellrazor650 View Post
what a dense and dirty looking city. much more of a sprawl than even los angeles
chinese city sprawl can't compair with US cities,much smaller. but for downtown eara(or city center as chinese saying), larger.
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Old June 15th, 2010, 07:56 PM   #4353
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at the right bottom of the above pic, just shanghai expo eara.
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Old June 15th, 2010, 09:28 PM   #4354
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Quote:
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what a dense and dirty looking city. much more of a sprawl than even los angeles
Wow, that's a stupid post.
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Old June 15th, 2010, 09:41 PM   #4355
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Wow, that's a stupid post.
+1
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Old June 15th, 2010, 11:45 PM   #4356
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Wait. Did he just say Shanghai is dense and sprawly in the same sentence?
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Old June 15th, 2010, 11:57 PM   #4357
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Quote:
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Wait. Did he just say Shanghai is dense and sprawly in the same sentence?
Well, not really. Only in two consecutive sentences
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Old June 16th, 2010, 03:12 AM   #4358
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Some US cities are even dirtier almost like third world city.
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Old June 16th, 2010, 03:36 AM   #4359
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they are on a good way: building really big towers to clean up the mess ;-)
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Old June 16th, 2010, 04:54 AM   #4360
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Incredible aerial shot! Immense!
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