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Old December 30th, 2008, 10:37 PM   #921
Skyscraperologist
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If they go with the 1,400m plan, then visibility on a clear day would be about 90mi or 145km. That is amazing for a man-made object, but nothing compared with the cruising altitude of a jetliner. Remember that it took over 100,000 years for humans to figure out that the world isn't flat despite having mountains in excess of 15,000ft on all the 5 highly-populated continents of the world. The question is not "can you can see curvature?", but rather "how much curvature can you see?". At 1.0 - 1.4km, the answer is: virtually none.

Here is a simulated view of Dubai on Google Earth from an "eye alt" of 4,581ft (about 1400m). Do you see curvature?


BTW, Mainland Iran would not be visible even from the top of a 1400m Kakheel Tower. Sorry
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Old December 30th, 2008, 10:42 PM   #922
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didn't you already post that?
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Old December 30th, 2008, 10:42 PM   #923
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when does construction start?
it started already
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Old December 30th, 2008, 10:58 PM   #924
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Seeing curvature means that you don't see the horizon in the usual place but a bit lower. How big this "bit" is determines if you can actually see it with the naked eye. It is an angle (say phi) that can be calculated with tan(phi)=(sqrt(h*(2r+h)))/r where r is the earth' radius and h is the height, or to a good approximation phi=sqrt(2h/r). For a tower of 1km this gives phi = 0.0125 radians = 0.72 degrees. You won't see it by lack of reference, but looking along a horizontal guide (like the barrel of a gun that is calibrated to be exactly horizontal), it must be possible to see the difference.
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Old December 30th, 2008, 11:19 PM   #925
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we had that in OUR math book lol
I mean how to calculate something like that with "tan(phi)...
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Old December 31st, 2008, 01:21 AM   #926
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only way that 1400m view is possible is if tip of the pinnacle is accessible like Burj dubai's. If its an ordinary spire like sear tower's which is not accessible to its tip, the highest habitable space of this tower would be something like 1300m.
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Old December 31st, 2008, 01:35 AM   #927
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Tbh, I don't think you would notice much difference with 100 metres once you get up to THAT kind of height! lol. I'm MIke btw, not posted on here this thread before but taken a real interest in this building and can not wait for it to rise, this will be years of fun watching it grow.
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Old December 31st, 2008, 10:23 AM   #928
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Quote:
Originally Posted by Skyscraperologist View Post
Here is a simulated view of Dubai on Google Earth from an "eye alt" of 4,581ft (about 1400m). Do you see curvature?


BTW, Mainland Iran would not be visible even from the top of a 1400m Kakheel Tower. Sorry
Nice simulation, but in real world might be different
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Old December 31st, 2008, 11:07 AM   #929
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Do they have a final design set? If this is under contruction and there are 1000+, 1400+ etc options still floating around, why aren't they be set on a final design? Have I missed something completely? How does this work? I haven't been following the thread, and went back a fair few pages and I'm only more confused.
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Old December 31st, 2008, 03:09 PM   #930
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oh, Iran certainly will be visible from the top,.. how about checkin the dubai world to find it?
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Old December 31st, 2008, 03:53 PM   #931
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that veiw would really be amazing.
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Old December 31st, 2008, 10:43 PM   #932
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Quote:
Originally Posted by Mpol View Post
Do they have a final design set? If this is under contruction and there are 1000+, 1400+ etc options still floating around, why aren't they be set on a final design? Have I missed something completely? How does this work? I haven't been following the thread, and went back a fair few pages and I'm only more confused.
here you go

image hosted on flickr


image hosted on flickr


image hosted on flickr
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Old January 1st, 2009, 01:53 AM   #933
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I'm curious how much Nakheel Harbour Tower costs (US dollars)?
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Old January 1st, 2009, 06:13 AM   #934
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That means at the top of the tower it will be 10 Celsius colder, which means the difference between wearing a tshirt and a sweater.
You do know that the average high temperature in Dubai is 30c+ from April to November now do you (with an average high of 41.3c in August)
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Old January 1st, 2009, 07:51 AM   #935
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Fark me sideways that is amazing.

Will this push others to build more 1000k+? I think this building will be the largest for some time.
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Old January 1st, 2009, 12:49 PM   #936
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Final design is very nice
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Old January 1st, 2009, 01:12 PM   #937
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Quote:
Originally Posted by Skyscraperologist View Post
Remember that it took over 100,000 years for humans to figure out that the world isn't flat despite having mountains in excess of 15,000ft on all the 5 highly-populated continents of the world.
Source?
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Old January 1st, 2009, 02:56 PM   #938
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There are some news of new planed buildings and visions of Dubai. Amazing. Crazy....
http://malaysiacity.wordpress.com/20...lated_content/
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Old January 1st, 2009, 03:14 PM   #939
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Quote:
Originally Posted by CrazyAboutCities View Post
I'm curious how much Nakheel Harbour Tower costs (US dollars)?
(1 Euro = 1.3982 U.S. dollars)

The cost of the Burj Dubai is about (3 000 000 000) 3 miljard euro.
In dollar it is 4 194 600 000!!!



The cost of the Nakheel Harbour Tower is (10 000 000 000) 10 miljard euro.
In dollar it is 13 982 000 000!!!

But is think is much more about +/-20 000 000 000 dollar.
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Old January 1st, 2009, 03:32 PM   #940
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Quote:
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miljard
billion
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