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Old July 21st, 2006, 04:45 PM   #1
Krazy
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DUBAI: Burj Dubai (800m+) (part 17)



Link to Part 16

July 21, 2006 by Imre

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Old July 21st, 2006, 05:42 PM   #2
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nice update.

rather interesting to see it almost reached 1/3 of its total floor count.

and part 17 only

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Old July 21st, 2006, 06:37 PM   #3
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maybe we should just use the letter "p" in the title instead of the whole word "part"
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Old July 21st, 2006, 07:24 PM   #4
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If they stopped today, it would already be a great tower.

Funny, I thought 56 in arabic was also 56

Last edited by Bender; July 22nd, 2006 at 11:19 AM.
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Old July 21st, 2006, 07:47 PM   #5
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Well they read right to left anyway don't they? So it would be 65, if the same characters were used..

Correct?
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Old July 21st, 2006, 11:48 PM   #6
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this tower is coming along nicely!
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Old July 22nd, 2006, 12:04 AM   #7
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no words!!!
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Old July 22nd, 2006, 12:51 AM   #8
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Quote:
Originally Posted by Remusable
Well they read right to left anyway don't they? So it would be 65, if the same characters were used..

Correct?
Sure, let's apply that to the whole sentence:

.llat syerots 65 woN
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Old July 22nd, 2006, 03:37 AM   #9
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Quote:
Originally Posted by mhays
Sure, let's apply that to the whole sentence:

.llat syerots 65 woN
^Nice one, smartass.

Seriously, I also thought that numbers (1,2,3,4...etc) were universal; i.e., they may not have the same pronunciation but are written the same in almost every language.
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Old July 22nd, 2006, 03:55 AM   #10
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FAST!!!!!
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Old July 22nd, 2006, 04:20 AM   #11
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Great updates! This makes me "super crazy"
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Old July 22nd, 2006, 06:42 AM   #12
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EXCELLENT! 56 storeys high! or 216m over 700ft!!
milestone number 1000.lol
cheers champs
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Old July 22nd, 2006, 08:19 AM   #13
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A vertical city
By Daniel Bardsley, Staff Reporter
http://www.gulfnews.com/nation/Housi.../10053988.html

You walk inside, gratefully escaping the fierce summer heat, and linger in the luxurious lobby, unsure where to go next.

This is the Burj Dubai and it is simply overflowing with luxurious places to spend the afternoon.

Why not enjoy a drink in the juice bar - perhaps organic mangoes delivered that morning from India take your fancy?

Or perhaps you fancy a swim. Well, there are four pools to choose from, one of them an outdoor affair on the 76th floor.

Maybe you should book in for a session with one of the Tai Chi, yoga or meditation instructors?

In fact, 15,000 square feet of the building is dedicated to fitness.

Afterwards, take time to relax in the traditional hammam or visit the contemporary spa for the latest therapies.

Once that's over, you could try out one of the many restaurants or if you want to feed your brain instead, there is well-stocked library.

For something a bit more lively, the Burj Dubai can offer you its very own private nightclub.

And at the end of it all, there is the residents' lounge on the 122nd and 123rd floors to relax in.

Alternatively, you can sit down and have a smoke in the cigar club.


*************************************************


Profile: Burj Dubai
Staff Report
http://www.gulfnews.com/nation/Housi.../10053993.html

- Height is being kept secret but will be more than this estimate: 700 mts

- The number of floors is also a secret but likely to be about this: 180

- Samsung Corporation from South Korea is main building contractor

- Estimated construction cost. The whole Dubai Downtown development is costing around $20 billion and will contain 30,000 homes and the world's largest shopping mall, The Dubai Mall $1 billion

- Many of the lower floors will be taken up by a 175-room Armani Hotel. In addition there will be 144 luxury residential suites designed by Giorgio Armani and kitted out with his home furnishing line

- Floors 17 to 108 will have 800 private apartments. These sold out within eight hours

- Most of the higher floors will be offices and private suites

- An observatory 442 metres above ground on the 124th floor will be open to the public – the highest publicly accessible observation deck in the world

- There will be a club on floors 144 to 146

- Inspiration for the design was derived from the flower of the Hymenocallis plant that is widely cultivated in Dubai.

- Built of glass, aluminium, concrete and steel

- Much of the external surface is made of factory-produced unitised panels. Made of aluminium, glass and various brackets, they interlock on site and are up to two storeys tall. They improve quality and speed up building work

- Tip of the spire will be visible 60 miles away

- The rods that reinforce the structure weigh a total of 31,400 tonnes and laid end-to-end would stretch more than a quarter of the way around the world

- Water system will supply about 250,000 gallons per day

- The building's external surface is the size of 17 football fields

- The concrete used is equivalent to a solid cube of concrete 61 metres in size or a 1.5-metre wide pavement 1,200 miles long. It weighs the same as 100,000 elephants

- Peak electricity demand of the building is the same as 360,000 100-watt light bulbs


*************************************************


Tale of a tower
By Daniel Bardsley, Staff Reporter
http://www.gulfnews.com/nation/Housi.../10053995.html

World's fastest double-deck lift

The lifts to get up and down the Burj Dubai will be located in a concrete hexagon in the centre of the Y-shaped building.

Rather than having the main lifts stopping on every floor, express lifts will go up to sky lobbies, from where people can catch a local lift up or down to the exact floor they want.

"That makes the system very efficient. If you are running every lift up and down to stop at each level, then you will be hours getting them all there," said architect Eric Tomich.

An express lift taking 90 seconds will run up to the observatory on the 124th floor.

The Burj Dubai will feature the world's fastest double deck lift, which will hit speeds of 20mph.

The fastest single lift currently, which goes at 37.5mph, is in the Taipei 101 office tower in Taipei City, Taiwan. This is the tallest building in the world at the moment, reaching up 509 metres.

Cooling system

To reduce the cooling needed, the double-glazed building's glass units will reflect heat while still allowing high transmission of daylight.

The outside pane has a silver metallic coating to help prevent solar energy from entering while the inner pane has a low emissivity coating that reflects the long-wave radiation that comes off the earth's surface as heat at night.

The tower will nevertheless require about 10,000 tonnes of cooling per hour, where one tonne of cooling is 12,000 times the amount of heat that will raise or lower the temperature of one pound of water by one degree Fahrenheit.

Water that has condensed on the building from the air outside will be collected and used to water the surrounding landscape.

"It's so humid here in Dubai so the cooling system captures a huge amount of water," said structural engineer William Baker.

Condensed water will be collected and piped to a holding tank in the basement car park, from where it will be pumped into the landscaping system.

About 15 million gallons of water will be supplied each year this way - the equivalent of 20 Olympic-sized swimming pools.

Complex play of forces

Why has no one ever built something as tall as the Burj Dubai before?

According to architect Eric Tomich, the increasing weight of buildings as they get taller is not a limiting factor, because in terms of structural engineering, wind forces are a bigger consideration.

Other variables come into play so that costs rocket once you get above 80 to 90 storeys - and this puts developers off climbing higher.

"There is a premium to keep going higher. The further up you go, the less economic the building becomes.

"There are certain inefficiencies, such as the number of lifts needed and the higher specification needed to push utilities and systems up. You have equipment and building infrastructure running over a longer distance."

"It's a lot more complex exercise producing an ultra tall building than it is creating ten 40-storey towers," he said.

Tomich said developer Emaar's desire to produce a landmark building for the Burj Dubai Downtown development meant that these extra hurdles were worth overcoming.

"The economics of creating an ultra tall building are balanced by its being part of a larger estate.

It would be much more difficult to do this as a solitary building," he said.

Cleaning of windows

An elaborate system will clean the Burj Dubai's windows.

At several different levels, there are openable panels in the building's façade that will allow machinery to pass and attach itself to rails on the outside.

Using the rails, the machinery will move horizontally, carrying a cradle that contains people who will clean the windows.

Pumping of water

Water pipes 36 inches in diameter will carry chilled water high up into the Burj Dubai for use in the building's cooling systems.

Water used for fire protection sprinklers and hydrants, and for tap water, is pumped up and held in tanks. Gravity then produces the flow when water is used.

Power supply

Architect Eric Tomich said "very large" electrical cables will supply power through the tower, which will have its own electrical substations.

Fire safety

A major factor in designing the tower was fire safety and speed of evacuation.

When doing calculations, designers assumed the tower contained 35,000 people – although in reality the number is likely to be less than half this.

Concrete surrounds all stairs and there is a 5,500kg capacity elevator for firefighters and building service work.

"People cannot be expected to walk down 160 floors, so there are pressurised air-conditioned refuge areas approximately every 25 floors where they could wait safely or rest on the way down," said architect Eric Tomich.

Officials will not reveal how long a total evacuation would take, but insist they are "very happy" with how the building would perform in an emergency.

"We've looked at different scenarios and the focus is on ensuring people can leave safely and easily," said Greg Sang, Emaar's assistant director, projects.

Concrete mixtures

Many different concrete mixtures will be used in the Burj Dubai.

Various admixtures - chemical or physical additives - are put into the basic mix to produce the different types.

Certain concrete types resist heat, hydration or cracking, while yet more flow well in pipes so they can be sent to the part of the building where they will be used easily.

Some concrete will be pumped up to 500 metres and it must retain its properties while it is being transported.
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Old July 22nd, 2006, 11:27 AM   #14
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"- An observatory 442 metres above ground on the 124th floor will be open to the public – the highest publicly accessible observation deck in the world"
i thought it was about 490m up?
How high is CN Towers space deck?- 447m?
Also isnt SFWC going to have levels 95-101 dedicated to ob decks being between 460-475m)?
thanks str.
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Old July 22nd, 2006, 12:05 PM   #15
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Hey wasn't Burj Dubai's original height 750 meters? Was it changed? Or am I mistaken?
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Old July 22nd, 2006, 12:24 PM   #16
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there never was an original height, it was always kept secret with numbers popping up here and there from time to time.

however, 705m was the first, followed by 750.

-------------------------------------------------------


Desert rose

By Daniel Bardsley, Staff Reporter



For thousands of years, the world's tallest building was found in the Middle East.

The Great Pyramid of Giza in Egypt reigned supreme from 2,570BC to 1,300AD, when its crown was taken by Lincoln Cathedral in England.

But soon the region will once again be able to claim ownership of the highest building on the planet.

The Burj Dubai is now shooting up into the sky at a rate of one floor a week and by the time it is finished in late 2008 it will be close to twice the height of the 380-metre Empire State Building in New York.

"This is the most exciting thing I've ever seen. The magnitude is staggering," said architect Eric Tomich, an associate partner at Skidmore, Owings and Merrill, the US practice that designed and engineered the tower.

"Day to day we're solving problems we've learned how to solve many times before, but when you take a step back and look at it, it's amazing."

It is little more than three years since SOM's design, which has a Y-shaped plan, was chosen over a handful of others by developer Emaar - and already the building is 55 floors high.

It will end up having at least 160 storeys.

Strong winds

The design is based on a three-petalled desert flower, with each arm representing one petal, and in between the petals, on the lower levels, are three smaller wings representing the flower's minor lobes.

These are moulded to reflect the dome shape common in Islamic architecture.

The parts of the tower reach upwards in a helical shape, with terraces - there are 26 of them in total - created at each level.

It took SOM just a few weeks to create this basic shape, but design work on the spire is ongoing.

An important consideration was reducing the effect of strong winds on the tower.

Soon after winning the contest to design the tower, SOM's experts went into the wind tunnel and reshaped the structure "many, many times".

It is designed to withstand the worst storm that could be expected in Dubai in a 100-year period.

William Baker, SOM's partner in charge of structural engineering, explained: "When the wind blows past something, it creates whirlwinds that make the building go from side to side."

"If those movements happen at the natural frequency of the tower, you can get very large forces. We try to break up the natural frequency," he said.

Baker said because the building has many different surfaces "the wind gets confused" so the forces it exerts on the building are reduced.

As a result, people inside the tower should not be able to detect any side-to-side movement.

"We were able to make the tower higher and higher by constantly retesting it," Baker added.

The tower's three arms act as buttresses for each other.

About 80 people from SOM worked on the design, half of them architects in a team led by design partner Adrian Smith.

Together they created 3,000 design drawings. Much of the work was done on computer, helping the architects to produce a design of greater geometrical complexity.
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Old July 22nd, 2006, 01:42 PM   #17
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fantastic pics, it's unbelievable fast!!!
but no Glass again !!!
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Old July 22nd, 2006, 04:04 PM   #18
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Nice pics. But now, it's looks like the Ryugyong Hotel.
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Old July 22nd, 2006, 06:21 PM   #19
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yeah
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Old July 22nd, 2006, 06:36 PM   #20
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hey guys thought i would make this

the height of the burj dubai is an estimate

can u confirm the height culwulla plz

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