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Old May 19th, 2008, 11:01 PM   #941
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everything is possible, it only depends on how much money is available


edit @Tag_one: carbon is very expensive....money is again the problem
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Old May 19th, 2008, 11:04 PM   #942
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With todays building materials like high strength concrete reinforced with carbon fibers it is possible to build that high.
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Old May 19th, 2008, 11:14 PM   #943
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Wow i found out carbon nanotube is 20,666 times stronger (measured in MPa) than concrete. Of course it also depends what kinds of these materials are.
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Old May 20th, 2008, 04:18 AM   #944
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Quote:
Originally Posted by OEincorparated View Post
Tell you the truth I don't think it's possible to build something that tall.
What do you base this statement on? I'm sure it's not facts, only speculation. A couple of years ago everyone said a building over 2000' couldn't be built and now we have one. As stated by others anything can be built if sufficient Financial Resources are available.
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Old May 20th, 2008, 04:33 AM   #945
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Quote:
Originally Posted by OEincorparated View Post
Tell you the truth I don't think it's possible to build something that tall.
Did you forget this is Dubai?
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Old May 20th, 2008, 04:37 AM   #946
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The technology to build such tall towers, has been around for many years. Now we have stronger materials, which help greatly versus before so we have it better than ever now.

If they want to spend the money on all of the exotic materials (on top of steel and concrete), then the sky is the limit -They could build it a mile high if they wanted...
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Old May 20th, 2008, 05:43 AM   #947
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Quote:
Originally Posted by Jocky Wilson View Post
At this stage, how sure can we be that :-

a) The Al Burj will be built?
b) It will be over 1km tall?
a) Almost certain but at this point not 100%. Only a formal announcement will guarantee this.

b) Yes and that is 100%. Their last report to the public was that the tower will be 1200m
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Old May 20th, 2008, 02:14 PM   #948
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they're already working at the Slurry Walls so i'm 100% sure that it will be build
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Old May 20th, 2008, 04:18 PM   #949
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Quote:
Originally Posted by OEincorparated View Post
Tell you the truth I don't think it's possible to build something that tall.
I don't think a single person on this planet with a civil or mechanical engineering degree would ever put a limit on how high something can be built. If you widen the base you can build higher, there is very little stopping this principle. The only reasons for a potential height limit on the size of a building would be sheer quantity of materials required. Scientifically, theoretically, physically there is no limit.

If you build a building with a 10metre wide base and 10cm thick concrete walls, as a tapering structure to a height of 50m. You then build a building with twice as wide a base, to twice a height and use the same thickness of walls, the building will be fine, extend this to infinity.

The way I've explained it before is with the example of Bryan Berg, he is the worlds greatest card house builder. You may think the tallest a house of card could possibly be is 1metre, 2 metres etc. He will tell you there is no upper limit, just more thought about how to build it:

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Old May 20th, 2008, 04:33 PM   #950
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Well, above a certain height you won't be able to build because of Earth's gravity (think limiting the size of mountains, etc)
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Old May 20th, 2008, 04:55 PM   #951
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Quote:
Originally Posted by Woozy View Post
Did you forget this is Dubai?
A couple of comparitions, its truly amazing!

image hosted on flickr


image hosted on flickr


End what with Amerika?
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Old May 20th, 2008, 06:14 PM   #952
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Quote:
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Well, above a certain height you won't be able to build because of Earth's gravity (think limiting the size of mountains, etc)
not at all, the materials we use and the attachment techniques are much better than those that occur naturally... have you ever seen a mountain in the shape of Burj Dubai for example, ie 800m high with very small height to base ratio. Also theoretically at least it is possible to use an orbital satellite as an anchor for a really tall building or space elevator.
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Old May 20th, 2008, 06:18 PM   #953
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Quote:
Originally Posted by Buyckske Ruben View Post
A couple of comparitions, its truly amazing!
This is going to be HUGE! I can understand the height better when its compared with other buildings. Thanks!
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Old May 20th, 2008, 07:51 PM   #954
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^you can understand the height, but the building will look nothing like that. We've not had a new rendering in years, yet know for sure there has been a redesign.
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Old May 20th, 2008, 07:57 PM   #955
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Quote:
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Well, above a certain height you won't be able to build because of Earth's gravity (think limiting the size of mountains, etc)
do not doubt the progress of humanity ..there is no limit
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Old May 20th, 2008, 10:45 PM   #956
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Quote:
Originally Posted by malec View Post
Well, above a certain height you won't be able to build because of Earth's gravity (think limiting the size of mountains, etc)
The size of mountains are not limited by gravity! They are only limited by the forces that created them and environmental forces that keep eroding them. Actually as you go higher the force of gravity diminishes slightly.
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Old May 20th, 2008, 10:58 PM   #957
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The only limit on the size of a building is the $$$ available to build it.
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Old May 20th, 2008, 11:54 PM   #958
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Quote:
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End what with Amerika?
huh????????

amazing tower, if they do build that high, this is going to be something else, looking forward to updates
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Old May 21st, 2008, 12:09 AM   #959
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Quote:
Originally Posted by Tag_one View Post
With todays building materials like high strength concrete reinforced with carbon fibers it is possible to build that high.
Would the carbon fibre replace the steel rebars and reinforce concrete? Or how would the carbon fibre be used to reinforce concrete?
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Old May 21st, 2008, 10:04 AM   #960
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I think carbon fibres are an impractical building material, the current thinking is that carbon nanotubes could be used to reinforce concrete due to their excellent strength under tension. However the technology is still immature, and real solutions with nanotubes are a long way off. I assume they would replace steel reinforcement in concrete, but they may be useable alone.
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