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Old June 21st, 2006, 02:17 AM   #481
Krazy
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Burj Dubai takes shape



Dubai: Burj Dubai, which will be the world's tallest tower, yesterday reached 50th floor, or 25 per cent of its habitable height.

Construction of the Dh3.673 billion tower, which started in early 2005, will end in 2008 and is progressing at a rate of one floor per week.

Over 3,000 workers are working on the site where more than 160,000 cubic metres of high-quality concrete and 25,000 metric tonnes of steel rebars have been used.

Reaching for the sky

* Current level: 50
* Completed 25% of 200 habitable floors
* Height: A secret, more than 750 metres
* The tip of the spire can be seen by a person 95 km away
* Build-up area: 5 million sq.ft
* Cement concrete: A total of 330,000 cubic metres
* Rebars requirement: 39,000 tonnes
* Man-hours needed: 22 million
* Glass requirement: 142,000 square metres (equivalent to 30 American football fields)
* Number of lifts to be installed: 56
* Designed to accommodate: 35,000 residents
* Completion schedule: 2008
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Old June 21st, 2006, 02:50 AM   #482
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Earth has a radius of approximately 6378.15 km. Using that number and the 95 km distance as the two bases of the triangle we can use a^2 + b^2 = c^2. Solving one gets that c= 6378.8574 km
Subtracting the earths radius gives us an approximate height for the Burj Dubai
c - 6378.15 = 0.70745 km = 707 m
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Old June 21st, 2006, 02:51 AM   #483
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Quote:
Originally Posted by TowerPower
Earth has a radius of approximately 6378.15 km. Using that number and the 95 km distance as the two bases of the triangle we can use a^2 + b^2 = c^2. Solving one gets that c= 6378.8574 km
Subtracting the earths radius gives us an approximate height for the Burj Dubai
c - 6378.15 = 0.70745 km = 707 m
?????????????????????
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Old June 21st, 2006, 03:01 AM   #484
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he was talking about my post from the pervious page

Quote:
Originally Posted by Pearl of the Gulf
Hey guys in today’s Gulf News I found something interesting that I didn’t know before. It said that the tip of Burj Dubai once completed would be seen by a person standing 95kms away. Then I remembered I once had to look up a formula for distance of human eyesight, keeping in mind the curvature of the earth. I tried to put the two together but I failed horribly; was never good at math. I ‘m sure some genius here can figure it out using the equation on thiswebsite. You just have to work the problem the other way around to find the height of Burj Dubai.





Distance it can be viewed 95 kilometer = 95,000 meter

Earth’s radius 3,963 mile = 6,377,830.272 meter
i too got 707.5 meters; but that’s the problem we are figuring the height of burj dubai ,having a person standing 95km away look at the entire building and not just the tip. the article specifically says “the tip of the spire will be seen 95km away”.

Last edited by Pearl of the Gulf; June 21st, 2006 at 03:13 AM.
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Old June 21st, 2006, 03:19 AM   #485
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Quote:
Originally Posted by Pearl of the Gulf
he was talking about my post from the pervious page



i too got 707.5 meters,but that’s the problem we are figuring the height of burj dubai ,have a person standing 95km away look at the entire building and not just the tip. the article specifically says “the tip of the spire will be seen 95km away”.
Line AB is tangent to the earth at point B and thus a person standing at point B should theoretically only be able to see the TIP of the Burj (point A). Just imagine a plane extending outwards from point B as if the earth were a ball resting on a table (the plane) positioned such that point B is facing down. Now the only thing point B can see is the table, it can't view anywhere else on the ball.

Wow, that probobly made no sense, but whatever.

Oh BTW, my original calculation wasn't actually correct. In my calculation I assumed the 95 km was the distance from point B to the tip of the Burj. In fact, the 95 km is the distance along the surface of the earth from point B to the foot of the Burj. I doubt the numbers would change much however.
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Old June 21st, 2006, 03:31 AM   #486
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i see what you mean.. but the distance of 95km is too short for that theory to work. I’m guessing that there is less than a single degree curvature for that distance.
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Old June 21st, 2006, 03:34 AM   #487
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.853 degrees to be exact.
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Old June 21st, 2006, 03:58 AM   #488
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Not to change the subject, but it looks like the tier 1 nosecone is finally reaching the base of the setback above it - even the best closeups leave you guessing as to the methods being used, but the rebar does seem to be only a single level below the tie-in.
It also seems that the support columns for the nosecone starting above this point were built upon cantilevered footings that are hidden now but were very cool while visible - check some of the older posts.
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Old June 21st, 2006, 04:00 AM   #489
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200 floors?????
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Old June 21st, 2006, 04:40 AM   #490
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Quote:
Originally Posted by Chad
200 floors?????
THIS BUILDING IS 160 Floors

Last edited by abbas786_ali; June 21st, 2006 at 04:52 AM.
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Old June 21st, 2006, 04:44 AM   #491
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And you know that how?
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Old June 21st, 2006, 04:57 AM   #492
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GO HERE! THIS IS THE MOST OFFICIAL YOU CAN GET

http://www.emporis.com/en/wm/ci/bu/s...t=2&ht=2&sro=1
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Old June 21st, 2006, 04:57 AM   #493
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I think we should change the name of the Tread to:

Burj Dubai - History Rising
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Old June 21st, 2006, 04:57 AM   #494
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Number of lifts to be installed: 56

impressive!!!!!
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Old June 21st, 2006, 05:30 AM   #495
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Quote:
Originally Posted by dubaiflo
nice shots!




the concrete is 575m, what r u all talking about, we knew that for ages, but there will be additional floors added with a steel structure plus the spire in the end.

who said it is 608m roof anyway..

this article does, once again not proof anything.

anyway.

so Level 50 is the first landmark for emaar.
the roof of lev161 =apprx 608m, but there is an enclosed plantroom above this which = 625m high. so maybe that is rooftop.
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Old June 21st, 2006, 05:30 AM   #496
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I think it could be taller as we all expect.Remeber its Dubai and if they want to build a superlative they will do.It is also possyble i read to extend the height of BD after its completed.And it will have the highest ob deck when they build the tallest building than they will of course also build the highest ob deck.That you anticipate if you visit the tallest man madre structure.We shuold not spectaculate about the height and let us suprise!And if it will only "ONLY" be 700m its still a giant.But i believe it will exceed the mark of 800m or even 850m!
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Old June 21st, 2006, 07:02 AM   #497
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Quote:
Originally Posted by abbas786_ali
GO HERE! THIS IS THE MOST OFFICIAL YOU CAN GET

http://www.emporis.com/en/wm/ci/bu/s...t=2&ht=2&sro=1
actually emporis is the last source u wanna use to find out the floor count or the height of Burj Dubai. Remember that the main Dubai editor is our own mod Dubai-Lover and he uses the data that is discussed here and on the analysis done. Emporis has clearly stated that the height and floor count is not fixed and they dont want to take a risk by over estimating the data till it's officially announced/determined on completion. So dont use emporis as "evidence"
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Old June 21st, 2006, 07:16 AM   #498
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Part 16 now open.. please lock this thread
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Old June 21st, 2006, 11:42 AM   #499
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Not yet, we need at least one more reply to reach 500 posts.
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Old June 21st, 2006, 12:02 PM   #500
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YUPPY!!! 500!!! :P

Quote:
Originally Posted by New York Yankee
Extra picture.

Look! Its the smurfs :P
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