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Megatalls Discussions of projects under construction at least 600m/2,000 ft tall.



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Old Yesterday, 08:45 PM   #2401
oud-Rotterdammer
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We are already running to the end of 2017.
This tower is so huge, it can never, never complete in 2020 or even 2022.
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Old Yesterday, 08:56 PM   #2402
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It's not 'huge', it's tall. And for about half of the height it's just concrete core in the same shape.
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Old Yesterday, 09:18 PM   #2403
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Let us just remind ourselves the ESB was completed in 1 year and 45 days including the foundation, and that was a full building. And concrete cores can rise up to 4 meters a day, which means that this tower could very well be completed at least externally by 2020. It is Dubai after all. The thing that will probably be the most challenging is spanning the cables and making sure the tower doesn't topple before the cables are attached, but I'm sure engineers will have thought about that as well.
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Old Yesterday, 10:24 PM   #2404
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Wouldn't be surprised if there are temporary cables involved in the construction process until the tower reaches the height for the permanent cables to be attached.
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Old Yesterday, 11:13 PM   #2405
oud-Rotterdammer
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I surely hope that construction will proceed rapidly.
The sooner I have a good reason to make a 5-day holiday to Dubai...


But as an engineer, I can estimate what enormous works lie ahead.
And the higher, the more slowly it will go.
Even a mere concrete core of 700-800 m is unexplored territory so far.
The enormous cables are unprecedented on buildings. Only some reference can be the taller suspension bridges in the world.
And so on, and so on.


Pity we do not get any direct insight in the official building scenario and drawings...
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Old Today, 12:20 AM   #2406
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How do they hang cables like that... helicopters? Can’t be.... i mean.. how ?
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Old Today, 12:24 AM   #2407
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Quote:
Originally Posted by GulfArabia View Post
How do they hang cables like that... helicopters? Cant be.... i mean.. how ?
there is something wonderfull for constructions called "a crane" , you pull an end of the cable, while the other end will stay on ground.
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Old Today, 09:32 AM   #2408
oud-Rotterdammer
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Hoisting the cable up will not be the biggest problem.


The cables will all be fixed to the tower at approx. the same level, it seems.
This means that we will be seeing a large array of cables around the tower at this height.


To keep the tower vertical, the puling force in each cable will no so very that high. Load by the cable weight and wind will probably much higher.
How to fix them to the tower?
And how to fix them to the underground anchor blocks? On each block, 55 cables are pulling...
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Old Today, 03:44 PM   #2409
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Quote:
Originally Posted by Whisky Peak View Post

hocus pocus:
if each cable gets 50 "little cables" or "strands", the middle length of the cables would be ~ 1490 meter.
Wow. But one has to take into account the angle and the curvature/bend of the cables, etc... Anyway, I'm loving this guessing game, keep it coming!
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