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



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Old June 1st, 2017, 10:00 PM   #2041
Sani Ramic
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My todays conference with some construction engineers was pretty impressive, i'm not allowed to copy any of the papers but what i can tell you is that they are not talking about if the tower can reach 1000m or 1100m, they discuss what will be next if this tower can DOUBLE the height of the highest buildings in the last decade (there are several towers in china with 600+m for example).
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Old June 1st, 2017, 11:07 PM   #2042
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Originally Posted by GulfArabia View Post
Imagine if the "ropes" starts making screeching sounds at the base because of the friction, wind and the heavy loads...
If they are not properly braced they could vibrate in the wind turning the whole building into a giant harp. It could sound like music or it could literally just give everyone headaches.

And if they vibrate hard enough they could snap, like a whip, a whip weighing in several tones, destroying everything directly below it.
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Old June 1st, 2017, 11:11 PM   #2043
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We are living in very interesting times indeed

But we have gotten to a point now that very few of the buildings in the top 20 including u/c Really turn a profit by itself. The Burj Khalifah Turn a profit all in all because it was built by Emaar wich in turn earns on a successful Dubai with alot of tourism. And the same applies to The Tower.

And u also get to a point where elevators and core takes up to much space. But this Might be mitigated by Nanotechnology over time tho.

Thoughts on Future worlds tallest buildings below by Adrian Smith and William Baker (structural engineer) Skidmore, Owings and Merrill

https://www.citylab.com/design/2012/...-can-get/2963/
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Old June 1st, 2017, 11:37 PM   #2044
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If anyone can build a 1 mile high tower is Dubai! Such a great city with greater ambitions
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Old June 2nd, 2017, 12:43 AM   #2045
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They're thick enough that I don't imagine resonance to be a problem. Even though I still mentally think of them like guy tower steel cables, these'll be far larger in reality. I don't ever recall hearing bridge cables make noise so I'm sure these won't either.

I think they're also just serving as minor stability anyway. No heavy (aka structural-integrity based) load is required of them, last I read. If the tower itself is all concrete and steel, I'm sure they're planning it to stand on its own.
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Old June 2nd, 2017, 10:20 AM   #2046
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Well.
Cables on, for instance, suspension bridges CAN give troubles.

In Rotterdam, when the Erasmus Bridge was constructed, vibrations happened in the suspension cables due to wind (frequency related).

It could be solved relatively quick by adding dampers at the lower end of the cable, to the bridge deck. So deck, cable and damper formed a triangle of approx. 2 m
And the problem was gone.


PS
If you don't believe what winds can do to a structure:
https://www.youtube.com/watch?v=nFzu6CNtqec


For the tower in Dubai, we look at a completely different scale.
It's all much larger and heavier.
But also finite-element calculation techniques improved over the last 20 year.
So let's hope that cable problems like above can be foreseen and avoided...

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Old June 2nd, 2017, 01:25 PM   #2047
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I don't know why i called them ropes the word cable left my brain, but yeah.. its not just wind we deal with but also sand..

Last edited by GulfArabia; June 2nd, 2017 at 04:08 PM.
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Old June 2nd, 2017, 01:28 PM   #2048
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Oh not denying winds being powerful or not capable of destruction on cables. Just saying I think that between their weight plus tension plus dampening that I think they'll be secured well.
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Old June 2nd, 2017, 04:18 PM   #2049
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Emaar: #TheTowerDCH Behind the Scenes: Foundation work has been completed & work has begun on the anchorages for the stay cables #DubaiCreekHarbour



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Old June 2nd, 2017, 04:27 PM   #2050
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WOW ! ,Emarati2009, Fantastic , a Wonderful, will be Completed !! There's NO doubt in anybody's Mind , Right now, This is U/C and should be Placed on STICKY on top of the Jeddah Kingdom Tower as the Future Tallest in the World ,Passing the Jeddah Tower, Please any Moderator, you will be awarded putting this Thread as a Sticky at the Top of the World Forums with the Jeddah Kingdom Tower on top now, but this one Will be Completed !!



Quote:
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Emaar: #TheTowerDCH Behind the Scenes: Foundation work has been completed & work has begun on the anchorages for the stay cables #DubaiCreekHarbour



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Old June 2nd, 2017, 05:20 PM   #2051
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They need to start marketing the tower, no one knows this thing is U/C.. even in the middle east
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Old June 2nd, 2017, 05:49 PM   #2052
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They need to start marketing the tower, no one knows this thing is U/C.. even in the middle east
Excuse you??!!! Are you serious Both in Dubai and my Home country its something everyone is talking about ... that is such a random weird thing to say
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Old June 2nd, 2017, 06:11 PM   #2053
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No that's true ! I'm studying in a civil engineering school and when we talk about projects in the world everyone think that Jeddah Tower is the tallest (sadly). Of course it has been years JT was annonced, The Tower is a very new project that started construction very fast ! I hope it will become more popular before completion.
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Old June 2nd, 2017, 06:17 PM   #2054
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If ur in the civil enginnering or architecture community sure, but the rest of the world has no clue... i am studying civil engineering innthe gulf and the people around me have no idea but thats just me...
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Old June 2nd, 2017, 07:14 PM   #2055
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Quote:
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They need to start marketing the tower, no one knows this thing is U/C.. even in the middle east
I think you need to read more about EMAAR
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Old June 3rd, 2017, 03:57 AM   #2056
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Quote:
Originally Posted by GulfArabia View Post
If ur in the civil enginnering or architecture community sure, but the rest of the world has no clue... i am studying civil engineering innthe gulf and the people around me have no idea but thats just me...
That's true of the majority of the public who doesn't follow skyscrapers, architecture, or the WT-whatever race though. As for marketing, this is EMAAR, I am sure they have done their profitability and investment calculations before sinking $20B into this city.

Basically what we know as Downtown Dubai with BK and the mall succeeded probably beyond some of their wildest expectations, or at least on par. They are simply repeating it.
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Old June 4th, 2017, 05:01 PM   #2057
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My first post this, been following this forum for quite some time now Cannot wait to see this marvel rise! Anyways, poking through the internet, I stumbled upon an extended version of the "foundation completion-video" by Emaar. If you skip to 1:55/1:56 you can see some interesting construction-simulations showing how much of the current hole is going to be taken up by "The Tower" I thought this might be to someone´s interest (the video is featured down in the article)

http://www.albayan.ae/across-the-uae...5-26-1.2959246
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Old June 4th, 2017, 06:19 PM   #2058
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Thanks a lot for the video! Here are two screenshots of the most interesting information

As we can see, the actual width of the tower is way smaller than the diameter of the hole. Kind of disappointing in my opinion since the tower doesn't seem to be wide enough to have floors all the way up. Time will tell



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Old June 4th, 2017, 06:52 PM   #2059
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This is probably not tower final look, maybe it's just a core in it, i don't know but in renders The tower is circle in shape and in that screenshot it is square.

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Old June 4th, 2017, 10:26 PM   #2060
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Quote:
Originally Posted by TheNorwegian View Post
My first post this, been following this forum for quite some time now Cannot wait to see this marvel rise! Anyways, poking through the internet, I stumbled upon an extended version of the "foundation completion-video" by Emaar. If you skip to 1:55/1:56 you can see some interesting construction-simulations showing how much of the current hole is going to be taken up by "The Tower" I thought this might be to someone´s interest (the video is featured down in the article)

http://www.albayan.ae/across-the-uae...5-26-1.2959246
So many thanks for this marvellous video TheNorwegian !!! And thank you DubaiM for the screenshots.
Thanks to it, I could also take others...




(sorry for bad quality)
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