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#921 |
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Registered User
Join Date: Jan 2008
Location: New York
Posts: 371
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when does construction start?
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http://www.skyscrapercity.com/announ...php?f=29&a=307 |
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#922 |
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Registered User
Join Date: Aug 2008
Posts: 66
Likes (Received): 0
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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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#923 |
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Registered User
Join Date: Jan 2008
Location: New York
Posts: 371
Likes (Received): 0
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didn't you already post that?
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http://www.skyscrapercity.com/announ...php?f=29&a=307 |
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#924 |
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I love Skyscrapers
Join Date: May 2006
Location: Near Ingolstadt in Bavaria
Posts: 28,418
Likes (Received): 1077
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Download the most up-to-date list of all Supertalls on this planet here: Last Tower added: Eurasia - Moscow - 309m The Supertall-City-Ranking: Last City added: Changzhou Follow me on Twitter: @Minecraft_87 Visit my Photo-Website: www.foto-kotzur.de
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#925 |
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Registered User
Join Date: Sep 2002
Location: Delft
Posts: 334
Likes (Received): 0
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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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#926 |
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Registered User
Join Date: Sep 2008
Location: Oldenburg
Posts: 178
Likes (Received): 0
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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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All those beautiful cities and their new supertalls!
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#927 |
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NANI Luis Almeida Cunha
Join Date: Mar 2008
Location: London
Posts: 3,417
Likes (Received): 77
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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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독일의 막가파 두목이름은? 칼막 휘둘러 일본에서 가장 유명한 구두쇠 수도국장 이름은? 무라까와 쓰지마 |
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#928 |
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The Manchester Invasion
Join Date: Feb 2008
Location: South Manchester & Preston
Posts: 566
Likes (Received): 0
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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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#929 | |
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Moderator!
Join Date: Feb 2008
Posts: 73,578
Likes (Received): 5168
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Quote:
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Urban Showcase: Athens Kalamata Trikala Thessaloniki Cityscapes: Paris Barcelona Dubai, U.A.E. Monte Carlo, Monaco General photography: Castles of France - Chateau de France and, since May of '08: Greece! |
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#930 |
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Registered User
Join Date: Dec 2005
Posts: 994
Likes (Received): 1
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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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#931 |
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Registered User
Join Date: Dec 2007
Location: Eudezet
Posts: 85
Likes (Received): 0
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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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#932 |
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Registered User
Join Date: Jun 2007
Posts: 1,724
Likes (Received): 13
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that veiw would really be amazing.
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#933 | |
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George
Join Date: Aug 2007
Location: San Luis Obispo, CA
Posts: 624
Likes (Received): 0
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Quote:
![]() image hosted on flickr ![]() image hosted on flickr ![]() image hosted on flickr
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#934 |
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Registered User
Join Date: Feb 2007
Location: Seattle, Washington
Posts: 8,348
Likes (Received): 25
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I'm curious how much Nakheel Harbour Tower costs (US dollars)?
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#935 | |
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Registered User
Join Date: Mar 2007
Posts: 12
Likes (Received): 0
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Quote:
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#936 |
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Registered User
Join Date: Dec 2005
Posts: 994
Likes (Received): 1
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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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#937 |
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Moderator!
Join Date: Feb 2008
Posts: 73,578
Likes (Received): 5168
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Final design
![]() is very nice
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Urban Showcase: Athens Kalamata Trikala Thessaloniki Cityscapes: Paris Barcelona Dubai, U.A.E. Monte Carlo, Monaco General photography: Castles of France - Chateau de France and, since May of '08: Greece! |
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#938 |
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BANNED
Join Date: Sep 2008
Posts: 698
Likes (Received): 0
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#939 |
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Registered User
Join Date: May 2008
Location: Zielona Góra/ Wrocław
Posts: 513
Likes (Received): 0
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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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"Niech się mury pną do góry..." |
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#940 | |
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Registered User
Join Date: Aug 2007
Posts: 1,865
Likes (Received): 14
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Quote:
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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