daily menu » rate the banner | guess the city | one on oneforums map | privacy policy | DMCA | news magazine | posting guidelines

Go Back   SkyscraperCity > World Development News Forums > Megatalls

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



Global Announcement

As a general reminder, please respect others and respect copyrights. Go here to familiarize yourself with our posting policy.


Reply

 
Thread Tools
Old September 8th, 2008, 09:42 PM   #9901
buildmilehightower
NANI Luis Almeida Cunha
 
buildmilehightower's Avatar
 
Join Date: Mar 2008
Location: London
Posts: 3,421
Likes (Received): 240

Quote:
Originally Posted by deep sea buildings View Post
nice idea but highly doubtful - the wind up there would be over 100mph on a good day.
wrong, you're saying 700 metre off Dubai's ground on a good day endures category 2 hurricane. Then he cranes wil definately buckle in half and even workers flying off the building.
buildmilehightower no está en línea   Reply With Quote

Sponsored Links
Old September 8th, 2008, 10:50 PM   #9902
Old Town Resident
Sunny Intervals.
 
Old Town Resident's Avatar
 
Join Date: Jun 2007
Location: Aberdoom
Posts: 2,747
Likes (Received): 321

Lifting Mechanism Spooling

The third and final pulley at this level installed and it looks as though the spooling of the lifting cable has also started.

To answer question on severity of wind at that height look at the lifting sling on the right of the pic,there is not much wind impact.

The spire top remember will have an aircraft warning beacon, not normally flat.

[IMG]http://i33.************/nvy51i.jpg[/IMG]
Old Town Resident no está en línea   Reply With Quote
Old September 8th, 2008, 11:11 PM   #9903
Erebus555
It's Sting. So What?
 
Erebus555's Avatar
 
Join Date: Apr 2006
Location: Bristol
Posts: 31,071
Likes (Received): 188

Quote:
Originally Posted by ZZ-II View Post
do you even know how much 100mph are? should be not very often in dubai i tink. or is the construction on the burj dubai maybe on-hold all the time because of heavy wind?
Well, as with all construction sites, the contractors or construction company will foresee such instances and will develop strategies as well as producing equipment that could stand wind speeds like that. There are many locations throughout the world which have to withstand windspeeds similar to that.

However, I cannot see this being subject to winds constantly over 100mph. The workmen would therefore have to be working against hurricane force winds constantly!
__________________
The UK Housing Wiki - Attempting to document every tower block, council estate, private estate, housing association, tower block construction/ demolition method, tower block architect, tower block construction company... etc etc, in the UK. Everything to do with postwar residences! - Please join and help!

EREBUS - OFFICIAL MOD CANDIDATE 2011 - BRITISH MODS FOR BRITISH PEOPLE!
Erebus555 no está en línea   Reply With Quote
Old September 8th, 2008, 11:20 PM   #9904
buildmilehightower
NANI Luis Almeida Cunha
 
buildmilehightower's Avatar
 
Join Date: Mar 2008
Location: London
Posts: 3,421
Likes (Received): 240

Quote:
Originally Posted by Erebus555 View Post

However, I cannot see this being subject to winds constantly over 100mph. The workmen would therefore have to be working against hurricane force winds constantly!
Exactly, and not category 2 hurricane in Dubai.
buildmilehightower no está en línea   Reply With Quote
Old September 9th, 2008, 12:55 AM   #9905
unknownquinones
GMA7 Powers Founder
 
unknownquinones's Avatar
 
Join Date: Jun 2008
Posts: 53
Likes (Received): 0

May 12 by marmot_oo7
image hosted on flickr
__________________
-Unknownquinones (GMA7 Powers Administrator)
unknownquinones no está en línea   Reply With Quote
Old September 9th, 2008, 01:07 AM   #9906
Fury
Proudly Canadian
 
Join Date: Mar 2006
Posts: 2,059
Likes (Received): 350

Quote:
Originally Posted by Milansson View Post


or will they first jack up the spire and build the last 4 sections afterwards?
Hi Milansson.

The next 4 sections only gets us to the top of tier 22. Then 3 more sections to the top of tier 23. Then there is tiers 24, 25, and 26 (that are around 1/2 the height of tiers 16 to 23) before we get to the cicular pinnacle (tiers 27 to 30). So many sections left yet.

Hi Build.

The top has a round platform with a handrail around it that has a hatch. Ladders inside the pinnacle provide access. People must go up there to access the 3 big aircraft warning lights. I would change lightbulbs for free just to be able to stand up there out in the open and take in the view.

[IMG]http://i36.************/28klpbc.jpg[/IMG]

[IMG]http://i35.************/35ch2cn.jpg[/IMG]

Hi OTR.

By the old plans we have there is a spire opening right down to the concrete.
1 - I'm not sure if they are still following that plan any more but they must be doing something close. That old plan shows platforms and working stages where there are none on the steel structure so not sure.
2 - By the looks of pics I don't think the pinnacle pipe is in there yet waiting to be lifted. I imagine they would lift small parts of it up there with the crane(s) and weld it up there.
3 - It remains to be seen if they will weld the wings for tiers 24 to 26 (or more) on to the pinnacle and jack it all together - most likely I would say.
4 - The old plan shows 2 seperate jacking stages which makes sense. Weld the top tiers and jack, then weld the rest to the bottom of what is jacked already and jack the works into place - we shall see.
5 - I posted a detail print a few pages ago that shows the construction of tier 22 and it said erect these parts before the jacking proceedure. It was referring to the 3 sections of tier 22. All our prints and plans are at least a year old so they may have come up with revised plans.

Such an interesting time in the construction of the BD. This jacking proceedure is gonna be cool whatever their current plan is.

Thanx to all the guys giving us updates - much appreciated.

__________________
Burj Khalifa - The Greatest Structure of our Time !!

Last edited by Fury; September 9th, 2008 at 01:14 AM.
Fury no está en línea   Reply With Quote
Old September 9th, 2008, 01:12 AM   #9907
CULWULLA
Registered User
 
CULWULLA's Avatar
 
Join Date: Sep 2002
Posts: 62,760
Likes (Received): 10144

heres a detail i did for the pinnacle

image hosted on flickr
__________________
Sydney Harbour Bridge -1932, Sydney Opera House- 1973, Sydney Tower- 1981, Crown Sydney- 2020.. https://www.buildsydney.com/forum
CULWULLA no está en línea   Reply With Quote
Old September 9th, 2008, 01:17 AM   #9908
SirAdrian
♥ Skyscrapers
 
SirAdrian's Avatar
 
Join Date: Jun 2008
Posts: 591
Likes (Received): 49

Quote:
Originally Posted by unknownquinones View Post
See that's a proper shot and cleanly compressed. I still don't buy the whole "the dust in the air" theory for unfocused and artifact laden photos.
SirAdrian no está en línea   Reply With Quote
Old September 9th, 2008, 04:07 AM   #9909
Capn Jef
Registered User
 
Join Date: Apr 2008
Posts: 175
Likes (Received): 9

Thanks, Fury and Culwalla! Awesome close up.

So a person can stand at the top, presumably to maintain the aircraft beacon?
Capn Jef no está en línea   Reply With Quote
Old September 9th, 2008, 05:15 AM   #9910
Shortest Skyscraper
Registered User
 
Shortest Skyscraper's Avatar
 
Join Date: Feb 2008
Posts: 78
Likes (Received): 3

Just wondering what is the life-expectancy of such a structure? Obviously it will be a big symbol for the city, and perhaps the region... and people would want it to last for centuries. But, structurally speaking is there a life-expectancy of such a building before demolition?
__________________
"All paid jobs absorb and degrade the mind."

- Aristotle
Shortest Skyscraper no está en línea   Reply With Quote
Old September 9th, 2008, 05:18 AM   #9911
Guest89
----SSC ®----
 
Guest89's Avatar
 
Join Date: Aug 2008
Location: Dubai
Posts: 1,137
Likes (Received): 36

^ The demolition will be spectacular, much better than the WTC lol.
Guest89 no está en línea   Reply With Quote
Old September 9th, 2008, 05:19 AM   #9912
Krattle
Registered User
 
Join Date: Dec 2005
Posts: 437
Likes (Received): 12

Yes, I've heard 500 years, and I wouldn't be surprised. The Empire State building has lasted 70+ years so far with no major problems.
Krattle no está en línea   Reply With Quote
Old September 9th, 2008, 05:24 AM   #9913
CULWULLA
Registered User
 
CULWULLA's Avatar
 
Join Date: Sep 2002
Posts: 62,760
Likes (Received): 10144

Quote:
Originally Posted by Capn Jef View Post
Thanks, Fury and Culwalla! Awesome close up.

So a person can stand at the top, presumably to maintain the aircraft beacon?
yes, the platform for the aircraft beacons would fit a couple of workers.
approx 1.5m dia

image hosted on flickr
__________________
Sydney Harbour Bridge -1932, Sydney Opera House- 1973, Sydney Tower- 1981, Crown Sydney- 2020.. https://www.buildsydney.com/forum
CULWULLA no está en línea   Reply With Quote
Old September 9th, 2008, 06:22 AM   #9914
drew.magoo
Registered User
 
drew.magoo's Avatar
 
Join Date: Jun 2008
Location: Houston, Rolla
Posts: 468
Likes (Received): 17

i have always wondered about the fins spiraling up to the pinnacle
what are they for again?
drew.magoo no está en línea   Reply With Quote
Old September 9th, 2008, 06:45 AM   #9915
Msradell
Always looking up
 
Msradell's Avatar
 
Join Date: Oct 2007
Location: Louisville, Kentucky
Posts: 1,772
Likes (Received): 209

They disperse the wind and thus reduce the wind load on the structure.
__________________
"Written using Dragon Naturally Speaking"
I've learned that depression is merely anger without enthusiasm.
Msradell no está en línea   Reply With Quote
Old September 9th, 2008, 07:20 AM   #9916
helghast
Registered User
 
helghast's Avatar
 
Join Date: Oct 2007
Location: Chicago
Posts: 2,374
Likes (Received): 147

delet
__________________
"If you put the empire state building on top of the Sears Tower then it's reasonable to say you'll be in the neighbourhood," Mr Baker says.
helghast no está en línea   Reply With Quote
Old September 9th, 2008, 11:50 AM   #9917
Milansson
Registered User
 
Join Date: May 2008
Location: Bratislava
Posts: 77
Likes (Received): 1

post no. 9922

yeah.. the spire will look a bit weird with the small things around, but they must have some kind of an aerodynamic function..
Milansson no está en línea   Reply With Quote
Old September 9th, 2008, 11:51 AM   #9918
Milansson
Registered User
 
Join Date: May 2008
Location: Bratislava
Posts: 77
Likes (Received): 1

Thank you Fury,

well.. i probably was a bit to eager to see the spire getting jacked up.. But the way you described it, does actually make more sense.. well see.. if you would ask me, i would probably say, that i would think that they will first weld the spire parts together in the steel construction and then jack it up at once, but let´s see.. anyway, this will take a looooong time to finish.. will be nice to see it rise up
Milansson no está en línea   Reply With Quote
Old September 9th, 2008, 12:05 PM   #9919
droneriot
Urban Hermit
 
droneriot's Avatar
 
Join Date: Apr 2008
Location: Cydonia Mensae
Posts: 4,667
Likes (Received): 2623

Quote:
Originally Posted by CULWULLA View Post
heres a detail i did for the pinnacle

[pic]
That's almost a hundred meters of ladder-climbing. I don't envy that maintainance worker.
droneriot no está en línea   Reply With Quote
Old September 9th, 2008, 01:13 PM   #9920
Guest89
----SSC ®----
 
Guest89's Avatar
 
Join Date: Aug 2008
Location: Dubai
Posts: 1,137
Likes (Received): 36

lol i think he's lucky, he can see the panorama at 819m
Guest89 no está en línea   Reply With Quote


Reply

Tags
adrian smith, burj dubai, burj khalifa, downtown, dubai, dubai tower, emaar, megatall, middle east, rascacielos, sarajevo construction, skyscraper, spire, tallest, uae

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Related topics on SkyscraperCity


All times are GMT +2. The time now is 06:58 AM.


Powered by vBulletin® Version 3.8.11 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions Inc.
Feedback Buttons provided by Advanced Post Thanks / Like (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

SkyscraperCity ☆ In Urbanity We trust ☆ about us | privacy policy | DMCA policy

Hosted by Blacksun, dedicated to this site too!
Forum server management by DaiTengu