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



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Old July 4th, 2008, 11:42 PM   #8261
the Monkey's Uncle
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The almost complete glass cladding brings out some really strong vertical linage in the tower... it makes it look even taller! I don't think I've ever seen a structure that's done that as well as the Burj has.
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Old July 4th, 2008, 11:48 PM   #8262
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It looks so good
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Old July 5th, 2008, 12:10 AM   #8263
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^ me to, but i think its a safety issue. imagine a million+ visitors a day in that little area. or i guess you can have the rules of supply and demand, you have a little space so only the highest bidder can go up.
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Old July 5th, 2008, 06:50 AM   #8264
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Quote:
Originally Posted by Infrasuper Planet View Post
Ok your new here, so i'll cut it easy. There are many factors that are contributing to what is relatively slow progress compared to what we used to see a few weeks ago. I say that because, in other parts of the world, the pace of construction at which BD is going at now is pretty much the standard time, if not a tad faster, than for other countries to complete a standard cycle floor. The rate of construction on this site is absolutley incredible and given its sheer size and structural complexities, due credit must be given to the chief engineers, planners and directors for organizing and leading a huge group of workers to build this mammoth with pure precision. Having said that, here are a few reasons why the construction is going slower than normal:

1. The Height - at over 650m tall, it takes a long time to lift huge steel beams and columns from the ground up to the current floor. I think it takes them about 5 mins or maybe longer to get from the ground to the steel structure. And remember, the higher they get, the longer the steel will take to get up to the top.

2. The Wind - related to height, but realistically has an impact on any construction 300m + in height. At 650m+, the wind is very strong, and especially in the dubai region, very powerful desert winds come across to the site and this has a big impact on construction logistics and progress. (If you read back a few pages, you will find that a forumer has commented that due to very powerful winds, construction had halted for about 18 days, due to concerns for the safety of the workers etc.

3. The Height increase - not confirmed as yet, but a few news reports have written about a possible change in height from the original plans (818m) , and this calls for change in design (more steel to support extra weight, floor hieghts, tier methodology etc)

so yeah, hope i answered your question.
cheers, and Welcome to SkyscraperCity Forums!!

P.S Other forumers feel free to comment if you feel what i have said is not 100% correct.
Haha, thanks, that was very helpful.

Quote:
Originally Posted by AltinD View Post
24/06
[IMG]http://i28.************/29vmlft.jpg[/IMG]
What is the purpose of that fantastic looking steel monolith to the left of the picture? I imagine it's helping with construction of the mass transit infrastructure, but does anyone know more detail on what that particular machine/contraption does? Thanks.

Last edited by Intamin; July 5th, 2008 at 07:06 AM.
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Old July 5th, 2008, 11:16 AM   #8265
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This huge yellow machine build the track on top of the pillars (you can see two of them in the pic) for the Dubai Metro. The machine is like a crane who lifts up the track in position and when track under the machine is ready - it moves to the next pillar and start track building and so on....
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Old July 5th, 2008, 06:34 PM   #8266
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Is the wind up at 660 metre height strong enough to actually move the steel beam that's being lifted up by the crane?

If this can happen the wind can swing away the steel beam away from the tower then next thing would be for steel beam to swing back toward the tower causing some damage.
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Old July 5th, 2008, 06:41 PM   #8267
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That's already a problem on much lower heights, but therefor that have experienced crane drivers that know what to do when anything happens. And if the wind if too strong they simply won't lift anything, just too prevent damage or worse personal accidents.
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Old July 5th, 2008, 06:59 PM   #8268
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Maybe they have the lower crane for that reason.
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Old July 5th, 2008, 08:08 PM   #8269
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flickr, june 28th by boinzo

image hosted on flickr


Fuul size: http://farm4.static.flickr.com/3113/...d3425cb3_o.jpg
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Old July 5th, 2008, 08:19 PM   #8270
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has anyone got a month in which they will start the spire lift ?
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Old July 5th, 2008, 09:24 PM   #8271
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Hi all.

Picasa - 08 07 04



The first columns of tier 20 can be seen - 668.9 m. tall now. This tier starts with a terrace that is the roof of tier 19 wing facing 120 degrees.

I'm liking the fact that on the crane masts they are putting a red section at the top of each tier - makes it alot easier to both estimate the height and the date on undated shots. The cladding progress really helps on the undated shots also.

It will be interesting to see if the start of the jacking proceedure will start in this tier.

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Old July 6th, 2008, 12:11 AM   #8272
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last floor was quite fast . Cul, how many steel sections left?
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Old July 6th, 2008, 01:03 AM   #8273
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Total 27 tiers
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Old July 6th, 2008, 01:12 AM   #8274
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actual 30, 3 are in the pinnacle
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Old July 6th, 2008, 07:44 AM   #8275
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good to see beams reach 668m.
or (174/175).
looking at diagram i did a 2weeks back.
i think the pinnacle wont start until tier24/739m has been constructed.
thats 11 more steel sections after latest one.(11x2weeks=22weeks. or oct)?
that way all of the enclosed levels are done and pinnacle then can rise up through spire structure.
so pinnacle may be hoisted up in november maybe?
ill update diagram tommorrow
june23 diageam>
http://farm4.static.flickr.com/3057/...01ec8d9e_o.jpg
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Old July 6th, 2008, 07:47 AM   #8276
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Quote:
Originally Posted by Skymyhusband View Post
flickr, june 28th by boinzo

image hosted on flickr


Fuul size: http://farm4.static.flickr.com/3113/...d3425cb3_o.jpg
This looks like Sear tower.
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Old July 6th, 2008, 08:40 AM   #8277
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i can't wait until the al burj is approved and under construction, its even bigger.
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Old July 6th, 2008, 09:14 AM   #8278
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the burj dubai is truly starting to look spectacular, can't wait for it to be topped off!
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Old July 6th, 2008, 09:33 AM   #8279
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Quote:
Originally Posted by jimmyfa View Post
This looks like Sear tower.
Are u retarded???What the hell does it have that makes it look like the Sears tower!!!this is 2x bigger and 100x better than the sears tower!
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Old July 6th, 2008, 09:35 AM   #8280
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the only comparrison i can make is that it has the setbacks
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adrian smith, burj dubai, burj khalifa, downtown, dubai, dubai tower, emaar, megatall, middle east, rascacielos, sarajevo construction, skyscraper, spire, tallest, uae

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