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



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Old October 28th, 2007, 04:57 AM   #501
redbaron_012
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Is this tower standing on sand ?
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Old October 28th, 2007, 05:34 AM   #502
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Is this tower standing on sand ?
Actually no, it floats in Air and its kept down in place using the longest/strongest piece of cotton string in the WhooOoooLe wide world.



on a more serious Note, Yes the Burj Dubai stands on soil / rock !!!!
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Old October 28th, 2007, 06:15 AM   #503
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Is this tower standing on sand ?
Not only that, this tower is made up of sand too.


If it was on sand, soon we will have the leaning tower of Dubai
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Old October 28th, 2007, 07:23 AM   #504
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Not only that, this tower is made up of sand too.


If it was on sand, soon we will have the leaning tower of Dubai
But The leaning Tower of DUbai will be the 8th World Wonder So, go for it !
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Old October 28th, 2007, 07:44 AM   #505
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But The leaning Tower of DUbai will be the 8th World Wonder So, go for it !

But the problem is all residents living within 818m from centre of BD (An area around 2.1km sq) have to be evacuted, and that is quite a huge space to waste



Anyway joke aside, Anyone know when they will be going up again? Since i suppose they stopped going higher for now.
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Old October 28th, 2007, 08:51 AM   #506
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I wonder how many cooling towers it'll take to handle a building that size... and most importantly, where are they going to place them?
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Old October 28th, 2007, 12:10 PM   #507
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The airco units will be placed in the mechanical floors. And they're indeed big
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Old October 28th, 2007, 12:49 PM   #508
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So where are the mechanical floors locations?

Can someone circle them in a picture or at least tell me the following info?
1.) Ho many mechanical floors?
2.) How big are they? I heard they take 2 stories
3.) Where are they located?
5.) What do they consist of?
6.) Are mechanical floors a standard requirement for all supertalls?
7.) Who is going to manage them? That is to say...if you have professional technical skills and want to move to dubai to work on a supertall, where do you apply?

- Senju (www.dubaisupertalls.com)
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Old October 28th, 2007, 02:04 PM   #509
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5.) What do they consist of?
Winding mechanisms for the elevators
Power supply, electrical generators and distribution
Air conditioning and chiller plant
Water distribution, including pumps to supply the higher floors
Fire suppression systems
and so on.

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6.) Are mechanical floors a standard requirement for all supertalls?
Any building needs mechanical floors.
For low rises, it is usually the basement.
Otherwise, any building with elevators needs mechanical plant on higher floors
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Old October 28th, 2007, 02:33 PM   #510
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Air temperature at the top

The Environmental Lapse Rate is the vertical temperature change observed in our atmospheric environment. It changes from time to time, but averages out to be around 3.0F/1000 feet. The Environmental Lapse Rate is obtained by radiosonde launched twice a day from many sites.

The Dry Adiabatic Lapse Rate is the rate of temperature change experienced by an air parcel moving vertically relative to the surrounding air (whose temperature profile is shown by the Environmental Lapse Rate). The dry adiabatic lapse rate is a constant 5.5F/1000 feet.

The Wet Adiabatic Lapse Rate is the rate of temperature change experienced by a saturated air parcel in which condensation is occurring moving vertically relative to the surrounding air (whose temperature profile is shown by the Environmental Lapse Rate). The wet adiabatic lapse rate is not a constant but averages out to be about 3.5F/1000 feet. This lapse rate is the dry adiabatic rate modified by the latent heat of condensation.

per : http://tornado.sfsu.edu/geosciences/...stability.html

The Burj Dubai will be 818 meters (2683.7 feet) so if it's 100F on the ground it could be as low as 85.24F at the pinnacle, a difference of 14.76F ...now we know where to find a cool breeze in the desert.

Cheers,

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Old October 28th, 2007, 02:38 PM   #511
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Quote:
Originally Posted by Senju View Post
Can someone circle them in a picture or at least tell me the following info?
1.) Ho many mechanical floors?
2.) How big are they? I heard they take 2 stories
3.) Where are they located?
5.) What do they consist of?
6.) Are mechanical floors a standard requirement for all supertalls?
7.) Who is going to manage them? That is to say...if you have professional technical skills and want to move to dubai to work on a supertall, where do you apply?
1: There are at least 5 mechanical floor groups.

2: One mechanical floor takes up indeed 2 stories and they are clustered with a group off 2/3 floors.

The questions 5 and 6 are already awnserd and the rest i dont know.

Hoped to awnserd the first 2 questions and here:

Cheers
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Old October 28th, 2007, 02:40 PM   #512
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very very tall!!but with wich will be filled when finished?
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Old October 28th, 2007, 02:42 PM   #513
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Whith people.
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Old October 28th, 2007, 02:44 PM   #514
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Whith people.
lmao
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Old October 28th, 2007, 03:33 PM   #515
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lol. great project btw
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Old October 28th, 2007, 03:59 PM   #516
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Quote:
Originally Posted by twickline View Post
The Burj Dubai will be 818 meters (2683.7 feet) so if it's 100F on the ground it could be as low as 85.24F at the pinnacle, a difference of 14.76F ...now we know where to find a cool breeze in the desert.


From what I know there temperature drop 1 deg C every 500ft/150m for most cases. So the highest accessible Balcony at Tier 27 (768.1m/2520ft) will experience a drop of at least 5 deg C from the ground floor of the tower.



If located at any tropical country, this building will be seen piercing through the clouds frequently.
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Old October 28th, 2007, 05:05 PM   #517
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WATS WRONG WHIT THE SERVER ?? IT HAS SAD THIS FOUR 4 DAYS NOW FOUR ME !




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Old October 28th, 2007, 05:12 PM   #518
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Quote:
Originally Posted by Gattberserk View Post
From what I know there temperature drop 1 deg C every 500ft/150m for most cases. So the highest accessible Balcony at Tier 27 (768.1m/2520ft) will experience a drop of at least 5 deg C from the ground floor of the tower.
A change of 1 degree Celsius equals a change of 9/5 = 1.8 degrees Fahrenheit So with your stats it would be 9 degrees cooler at 2520.. But dry air cools faster then wet air, I like the 14 degree cool off at the top. I guess it will come down to the humidity level at the time of reference.

Cheers,

Tom
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Old October 28th, 2007, 05:14 PM   #519
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WATS WRONG WHIT THE SERVER ?? IT HAS SAD THIS FOUR 4 DAYS NOW FOUR ME !
Looks like its working fine for you now.... hahaha you scribbled out your user name. We now know who you are watergate.



Tom
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Old October 28th, 2007, 06:54 PM   #520
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Quote:
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Whith people.
yes obvous but the whole city with all this mega project seems to me a bit empity to fill easily or not?
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