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Old July 7th, 2012, 03:12 PM   #461
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in that ssp render this beast looks about a mile wide when compared to burj khalifi ?
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Old July 7th, 2012, 04:00 PM   #462
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Have they done any wind testing at all? With that shape the vortex from the winds will shatter it in no time.
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Old July 7th, 2012, 09:49 PM   #463
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Quote:
Originally Posted by the sock
in that ssp render this beast looks about a mile wide when compared to burj khalifi ?
1 mile wide? Lol, not really
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Old July 7th, 2012, 10:45 PM   #464
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One thing about the Reuters article, it looks like it was first published in Reuters Magazine in their June 2012 issue. This magazine is published only once every four months, so this article was likely written before the Broad Group leaks of early June occurred.

Now this obviously doesn't mean that they will truly build this building, but it does explain why the article says that Broad is still trying to gather funding while Broad is currently claiming that they will have the building done by January.
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Old July 8th, 2012, 04:51 AM   #465
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So, the key to speed is removing concrete from modern "glass, steel and concrete" buildings? That would be a "destructive/disruptive innovation" :-o


But I'm really curious about the foundation, which often takes a year, but there are methods that does above-ground construction and digging at the same time. It's the method used for Tokyo Sky Tree and currently ongoing Toranomon Redevelopment Project. According to builders, this method shortens the project time by about a year.
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Old July 8th, 2012, 08:00 PM   #466
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Originally Posted by Systronic View Post
Have they done any wind testing at all? With that shape the vortex from the winds will shatter it in no time.
Of course they haven't, otherwise it would not look like that at all ..... and the issue was brought up since the thread was started.
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Old July 9th, 2012, 05:27 AM   #467
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If this building is completed 1st quarter next year , and still standing after 2012 . This revolutionize project management and construction methods .
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Old July 9th, 2012, 09:37 AM   #468
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yeh ...but that won't happen. maybe it'll end as never build, who knows
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Old July 9th, 2012, 01:25 PM   #469
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Design issues and wind dynamics (discussed before) aside, you just can't build such tall tower with pre-fab alone. The building must have a solid central core to support the load, and that has to be constructed on site.

The fastest reinforced concrete core level progressing so far has been in a 3 days cycle, so that alone would require in a a ideal hypothetical situation, a minimum of 660 days.
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Old July 9th, 2012, 11:42 PM   #470
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Quote:
Originally Posted by thazz View Post
Its now on http://skyscraperpage.com/:



What huge thing!
This building will most probably never be built, but I have never seen something this beautiful that is not a woman
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Old July 10th, 2012, 02:35 AM   #471
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Quote:
Originally Posted by AltinD View Post
Design issues and wind dynamics (discussed before) aside, you just can't build such tall tower with pre-fab alone. The building must have a solid central core to support the load, and that has to be constructed on site.

We would probably need some numerical data to do any meaningful discussion, but does the core have to be made of concrete? A big steel or titanium alloy column could also work as a core?
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Old July 10th, 2012, 10:55 AM   #472
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Carbon fiber columns? Anyway, looking at the mass of the building, there is no way to coordinate and assemble this is 90 days. Imagine the line of trucks needed to simply get the modules and structure to the site? I think this is all a publicity stunt, or the drawing is WAY off scale on width.
Another point is that it is unreasonably large at the base. For most rooms, it would be like being on the bottom floor of a cruise ship, with no windows.
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Old July 10th, 2012, 12:50 PM   #473
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Quote:
Originally Posted by 2co2co View Post
We would probably need some numerical data to do any meaningful discussion, but does the core have to be made of concrete? A big steel or titanium alloy column could also work as a core?
core =/= column .... abd your idea would contradict the pre-fab solution proposed, not to mention it's economically non-viable.
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Old July 10th, 2012, 12:57 PM   #474
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Another point is that it is unreasonably large at the base. For most rooms, it would be like being on the bottom floor of a cruise ship, with no windows.
That's like for masive buildings the three-winged base works best .... however a commercial building can get away with a huge base. Offices needs less window space.
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Old July 11th, 2012, 12:59 AM   #475
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Quote:
Originally Posted by AltinD View Post
Design issues and wind dynamics (discussed before) aside, you just can't build such tall tower with pre-fab alone. The building must have a solid central core to support the load, and that has to be constructed on site.

The fastest reinforced concrete core level progressing so far has been in a 3 days cycle, so that alone would require in a a ideal hypothetical situation, a minimum of 660 days.
I think BSB is proposing a steel box core, is that feasible?
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Old July 11th, 2012, 03:11 AM   #476
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I don't think a solid steel core is feasible, not with the amount of steel they want to use anyway. Let's say the steel core would be 750m tall and have a cross section of 10x10m. That's a volume of 75,000m^3. Since steel weighs about 8 tons per m^3, this would weight 600,000 tons while they're claiming to only need 200,000 tons for the entire building, not just the core.

You could shave some of this off by making the core thinner at the top, but it would still require way too much steel.
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Old July 11th, 2012, 06:39 AM   #477
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Quote:
Originally Posted by zerghunter View Post
Let's say the steel core would be 750m tall and have a cross section of 10x10m. That's a volume of 75,000m^3.
10m looks a bit too slender, but a filled core.... haven't heard of. I would calculate as 20m x 20m, thickness ~20cm.
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Old July 11th, 2012, 03:06 PM   #478
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In short, it'll just be huge.
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Old July 11th, 2012, 03:10 PM   #479
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Ever I admired the smart of asian.
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Old July 12th, 2012, 12:42 AM   #480
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Quote:
Originally Posted by 2co2co View Post
10m looks a bit too slender, but a filled core.... haven't heard of. I would calculate as 20m x 20m, thickness ~20cm.
In this case the cross-sectional area would be about 16m^2, for a total volume of steel of 12,000m^3. This comes out to a weight of just under 100,000 tons, or half of the weight of all the steel they claim to want to use in the building, so probably still too much steel.
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