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Old March 28th, 2012, 03:35 AM   #10401
no1xc
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They would be bolted on and then welded. Which would make it near as strong as whole pieces.

Also could you imagine them trying to get the pieces to the site and then lift them if they were whole pieces? Part of building a skyscraper is having to design the building so that it is well....possible to build.
Yeah, I know. ST's engineering is just fascinating. I'm sure the beams that stick out of the trusses are strong enough to not collapse, but the fact that the joints are made outside the floor area makes the beams look kind of vulnerable.

If you want to hang some weight on a beam that sticks out beyond a table's edge, where would you fix the beam? Logically, you would put at least part of the beam on the table and fix it right there, leaving only the rest of the beam sticking out. I'm not a structural engineer. I think the way the beams are attached is quite interesting.
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Old March 28th, 2012, 06:47 AM   #10402
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Yeah, I know. ST's engineering is just fascinating. I'm sure the beams that stick out of the trusses are strong enough to not collapse, but the fact that the joints are made outside the floor area makes the beams look kind of vulnerable.

If you want to hang some weight on a beam that sticks out beyond a table's edge, where would you fix the beam? Logically, you would put at least part of the beam on the table and fix it right there, leaving only the rest of the beam sticking out. I'm not a structural engineer. I think the way the beams are attached is quite interesting.
Well, I guess they have to, considering the limited lifting power of the crane. The forces in the jointing area are indeed enormous, this is why we need sturctural engineers right? AFAIK, if done properly, the joint could actually be stronger than the beam itself.

Another thing is, it may sounds crazy, many joints of these project are actually weakened. If anything extraordinary really happens, beams are always the first to make sacrifice, to protect those must be protected, AKA supercolumns.
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Old March 28th, 2012, 11:45 AM   #10403
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The third truss belt is shaping up





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Old March 28th, 2012, 12:04 PM   #10404
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Nice sideshot. Can't wait until Im back home in Shanghai in April!
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Old March 28th, 2012, 12:30 PM   #10405
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Lucky you, i gotta wait til November but im planning to stay in Shanghai for half a year next year
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Old March 28th, 2012, 12:47 PM   #10406
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By 天池 3/28

http://www.gaoloumi.com/viewthread.p...e%3D1&page=769

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Old March 28th, 2012, 02:52 PM   #10407
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Nice updates...
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Old March 28th, 2012, 04:07 PM   #10408
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By mori

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Old March 28th, 2012, 10:49 PM   #10409
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Lucky you, i gotta wait til November but im planning to stay in Shanghai for half a year next year
Well, than this tower has become a beast so don't forget to take a few pics.
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Old March 29th, 2012, 08:41 PM   #10410
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Sure.

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Old March 29th, 2012, 10:13 PM   #10411
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The structure for the outter curtain wall is going to be assemled downwards as I see.

By the way, the white paint in the columns and beams is fire proofing?
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Old March 30th, 2012, 12:44 AM   #10412
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One would think welded steel beams have less strength and are more prone to fatigue. The weight of the extensions itself must already be enormous, not to mention the additional weight of the equipment.
Depending on the welding technique, the welds can be the strongest part of a metal structure.
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Old March 30th, 2012, 04:39 AM   #10413
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The structure for the outter curtain wall is going to be assemled downwards as I see.
The outer curtain wall is connected to the inner core through numerous rods. If they were to install the curtain wall from bottom up, how would they be able to raise the work platform? haha
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Old March 30th, 2012, 05:34 AM   #10414
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The outer curtain wall is connected to the inner core through numerous rods. If they were to install the curtain wall from bottom up, how would they be able to raise the work platform? haha
not from bottom up, I meant between the trusses, from the upper one towards the lower one, but still I was just guessing , and hopping for someone to enlinght me.
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Old March 30th, 2012, 05:57 AM   #10415
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If you go to New York, you can find a model of the Shanghai Tower :-]


By eastsidehighrise at 2012-03-29


By eastsidehighrise at 2012-03-29


By eastsidehighrise at 2012-03-29


By eastsidehighrise at 2012-03-29
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Old March 30th, 2012, 07:03 AM   #10416
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Great Find!

where in NYC?
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Old March 30th, 2012, 07:11 AM   #10417
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Skyscrapermuseum in Battery Park> ?
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Old March 30th, 2012, 07:39 AM   #10418
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Skyscrapermuseum in Battery Park> ?
yes, thats the one! they have a GREAT collection of skyscraper models from around the world.
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Old March 31st, 2012, 02:11 PM   #10419
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Old March 31st, 2012, 02:42 PM   #10420
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The glass looks brilliant.
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