Future WTB | DUBAI | Burj Dubai | 808m | 162 fl | U/C

[dettol]

Or the carbon fibre reports are also rumours. This type of project carries with it a lot of misinformation.

[Fury]

Hi all.
From pbase - Brian Mcmorrow:

07 03 27






















07 03 28


















Enjoy

[Skymyhusband]

Thanks for the great pics

[-Corey-]

wow.. that tower looks huge and is getting taller every day..

[James R. Hawkwood]

The Grand Burj Dubai will rise and destroy every record on height and will make a mark for ever on Dubai and the world!!!!

[googlepeakoil]

Originally Posted by Marin

Source

Carbon fibre used to reinforce Burj Dubai floor slabs

Carbon fibre reinforcement is being used to strengthen defective floor slabs in what is set to become the world’s tallest building, the Burj Dubai, sources on the project said this week.

Carbon fibre is “being used on floors throughout the height of the building”, confirmed an engineer working on site. Reports of cracking in some of the floor slabs have leaked from the Burj Dubai site, although the client and designers this week insisted that there were “no serious problems”.

However, another project source said that there had been significant deflections in floor slabs in the lower storeys of the tower. In this case external steel reinforcement had to be added to bring them up to the required strength, he said.

Carbon fibre strips can be bonded to the concrete surface to provide external reinforcement. The material’s high tensile strength helps to reduce cracking or deflections in the concrete. Andy Davids, chief structural engineer for Hyder, the client’s engineer, said there were “no serious problems” with the structure.

He would not confirm that carbon fibre reinforcement was being used, but said that “all sorts of leading edge technologies are deployed in a building of this size”. The concrete structure is currently about 400m tall and will be just over 600m tall when complete.

This will be topped with a steel superstructure taking its total height to over 750m. NCE understands that the tower’s reinforced concrete floors span 9m and cantilever 3m at the building’s edge, but are of relatively shallow depth.

It is understood that client Emaar invited tenders for a £35,000 contract to supply carbon fibre fabric last year - won by the Swiss firm Sika. Work to apply carbon fibre strips to understrength floor slabs is ongoing, an engineer on the project told NCE. He said that carbon fibre strips are being applied to floor slabs to compensate for weaknesses.

Emaar assistant project director Greg Sang denied that carbon fibre is being used “anywhere”. “There are no structural problems,” he said.

Eric Tomich, associate partner at Skidmore Owings & Merrill, which is architect and structural engineer for the Burj Dubai, also denied any remedial work was being carried out. Structural expert Stuart Alexander, WSP group technical director, said: “A bit of cracking in a concrete floor slab usually isn’t terribly significant. Most of the time you wouldn’t need to fill them.”

But he added: “Things have to be pretty bad before you start putting carbon fibre on.” WSP is not involved in the project. Burj Dubai is being built by a joint venture of contractors Samsung, Besix and Arabtech.

thats interesting about the steels - as they're visible in some of the photos - but i thought the steels attached to the base of the concrete floors - floors 5-30 aprox were there just for the ducting and to support a suspended ceiling below - maybe the steels are there for the method they say? Anyone familiar with concrete building construction have a thought on the steel girders visible in these photos. There's several - all taken in the last 6 months or so since interior work began.

[ZZ-II]

great aerial pics, thanks

[googlepeakoil]

To the person who took the pics of the Adrian Smith book...
None of the text can be read in the photos and my eyes hurt from trying to focus on the pictures and read the floor numbers/see the lines.
The cause is the pictures were taken on too low a shutter speed so aren't sharp. May I suggest taking the photos outdoors again, but in broad daylight - then the shutter speed would be sufficient to prevent any blurring. If you have a sheet of clear glass or something to put over the pages that would help hold the pages flat too.
You requested info about resizing pictures. Get Paintshop Pro. To resize images try this: Image resize -> percent -> change to 50% or 33% (to make the picture 1200x800) and then Sharpen -> Unsharp Mask to prevent the softening caused by resizing.

[ZZ-II]

posted today in the UAE section:

Originally Posted by dubai 26

1 april 2007




and dubai mall

[Hardie]

Fantastic Photo's thankyou!!!!!!!!

[JC1717]

how much are the apartments selling for???

[gladisimo]

Originally Posted by James R. Hawkwood

The Grand Burj Dubai will rise and destroy every record on height and will make a mark for ever on Dubai and the world!!!!

Hahaha, perhaps not forever, but probably for most of our lifetimes...

Anywya, i have to wait til Dubai is done developing until I can make a judgment on the thing. Right now it's just gray and brown and spread out towers... BD is so lonely...

[Escoto_Dubai2008]

Nice pictures, the mall looks pretty big and I like the ones at night, are awsome.

[xAKxRUSx]

Great pics.

[delphi7x10]

Originally Posted by googlepeakoil

To the person who took the pics of the Adrian Smith book...
None of the text can be read in the photos and my eyes hurt from trying to focus on the pictures and read the floor numbers/see the lines.
The cause is the pictures were taken on too low a shutter speed so aren't sharp. May I suggest taking the photos outdoors again, but in broad daylight - then the shutter speed would be sufficient to prevent any blurring. If you have a sheet of clear glass or something to put over the pages that would help hold the pages flat too.
You requested info about resizing pictures. Get Paintshop Pro. To resize images try this: Image resize -> percent -> change to 50% or 33% (to make the picture 1200x800) and then Sharpen -> Unsharp Mask to prevent the softening caused by resizing.

OR even better, use a flatbed scanner, and they will usually come with the software to reduce at the same time.

[Skymyhusband]

Originally Posted by googlepeakoil

To the person who took the pics of the Adrian Smith book...
None of the text can be read in the photos and my eyes hurt from trying to focus on the pictures and read the floor numbers/see the lines.
The cause is the pictures were taken on too low a shutter speed so aren't sharp. May I suggest taking the photos outdoors again, but in broad daylight - then the shutter speed would be sufficient to prevent any blurring. If you have a sheet of clear glass or something to put over the pages that would help hold the pages flat too.
You requested info about resizing pictures. Get Paintshop Pro. To resize images try this: Image resize -> percent -> change to 50% or 33% (to make the picture 1200x800) and then Sharpen -> Unsharp Mask to prevent the softening caused by resizing.

Any image editing software (even free and modest ones) allows a good resizing of JPG picture with Lanczos or bicubic resampling.

But garbage in, garbage out: hard to improve results with such blurry pics.

[qatari 4 ever]

AMAZING TOWER

3MAR YA DUBAI

[storms991]

I love the mall, its so innovative in its design.

[Adrian Smith fan]

that article i dont believe for 1 minute, because we've seen the plans for a 808m figure never a 750m figure. and now the concrete part is going to 600m now, and Eric Tomich, associate partner at Skidmore Owings & Merrill even denied any remedial work was being carried out. so who knows what to believe. that 750m i dont really believe at all. i'm sticking with the 808m figure till we see actual plans that show a different height. i just think there pulling 750m out of the ass

[The-Real-Link]

Needless to say, some of the best photos yet. Not only are there a suitable amount to look through but the photographer captured many different angles and perspectives, making the photos look great. Nice to see some nice quality night-shots as well. This thing's getting tall enough now that I can just shake my head at it, especially at the pic 4th from the bottom (where most of the pool is captured as well)... It's really starting to "feel" tall - of course aside from the fact that it's nearing 120 floors high. Thanks to the photographer for capturing all these great shots.

I hope one day to also get great shots of the tower but after it's completed of course!

Adraian Smith Fan aka Megatower - Sweet book. I figured there had to be something great on BD as I have a thorough book on the Petronas Towers and would figure most extremely tall towers are ground breaking enough to warrant a dedicated book. If you're able to, please post better pics though. Likewise, my eyes hurt even trying to make them out on a large monitor. It'd be best if you could thumbnail them or just put links to any image-sharing site please.

Regarding the concrete problem, it's accepted thought in architecture that some cracking is normal and if controlled via joints in walls or floors (spaced depending on length or sqft of floor in question), cracking should be minimal or be of a forced or controlled nature (along a joint area). Light cracking could occur due to anything from applying of loads to reliving of stress and curing so to hear about this reinforcement isn't entirely wrong. Likewise though especially with a tower of this scale (and I'd think nearly all buildings) there should be no need to do this though as all the loads are calculated beforehand of course. Is the cracking (if even real) an issue? It seems right now that it's normal and everything's fine. If they were in serious enough trouble to warrant reinforcement or replacement of the slabs, then I'd have to wonder what they were thinking in the first place or why the right job didn't get done first time around.

Sorry if this is more basic info or how much of this stuff you guys already know or that I'm mistaken on but it doesn't surprise me that there would be cracks in a building that is primarily concrete. If it was a serious issue, it'd be corrected. Now as to the report being true, I don't know...

Thanks to everyone for documenting this amazing tower.