Dubai Skyscraper World's Tallest
An unfinished skyscraper in the Gulf state of Dubai has become the world's tallest building, at 141 storeys, its developers say.
Emaar Properties said the 512m (1,680ft) Burj Dubai is now taller than Taiwan's 508m (1,667ft) Taipei 101.
It is thought Burj Dubai will eventually be 693m (2,275ft) tall.
Height records are contentious, with dispute over what defines a "building" and what is being measured - height to the top floor or the tower's antenna.
When finished the building is expected to meet the Council on Tall Buildings and Urban Habitat's four criteria - the height of the structural top, highest occupied floor, the roof's top, and the spire's highest point - to become the world's tallest structure.
"Burj Dubai has now reached 141 storeys, more storeys than any other building in the world," the company said in a statement.
There is speculation that, spire included, the final height could be more than 800m, but Emaar is keeping structural details secret.
'Symbol of Dubai'
When finished, the skyscraper will have more than 160 floors, 56 elevators, apartments, shops, swimming pools, spas, corporate suites, Italian fashion designer Giorgio Armani's first hotel, and an observation platform on the 124th floor.
To qualify as a building, a structure has to have floors and walls all the way to its roof.
The tower is also expected to break the record for highest man-made structure, currently held by the wire-assisted KVLY-TV mast in North Dakota, US, which is 628m (2,072ft) tall.
"It's a symbol of Dubai as a city of the world," Greg Sang, the project director for Emaar Properties, was quoted as saying by the Associated Press.
Chairman Mohammed Ali Alabbar said Dubai has "resisted the usual and has inspired to build a global icon," according to AP.
"It's a human achievement without equal."
Building began on the structure on 21 September 2004, and is expected to be completed in 2008.
The spire of the building is expected to be able to be seen from 100km (60 miles) away.
"It's a fact of life that, at some point, someone else will build a taller building," Mr Sang said.
"There's a lot of talk of other tall buildings, but five years into Burj Dubai's construction, no one's started building them yet."
Previous skyscraper record-holders include New York's Empire State Building at 381m (1,250 ft); Shanghai's Jin Mao Building at 421m (1,381 ft); Chicago's Sears Tower at 442m (1,451 ft) and Malaysia's Petronas Towers at 452m (1,483 ft).
The CN Tower, in Toronto, Canada, is the world's tallest freestanding structure, at 553m (1,815.3 ft).
The Burj Dubai skyscraper in the United Arab Emirates is to officially become the world's tallest tower on Saturday - and it's only half built.
The super-structure is set to overtake current record holder Taipei 101 which measures 509 metres and has already surpassed Sears Tower in Chicago, CN Tower in Toronto and television masts in North Dakota and Warsaw.
Its final height - conservatively estimated to be between 818 and 940 metres - has yet to be revealed by developer Emaar Properties but when complete it will hold the record in all four categories as recognised by the Council on Tall Buildings and Urban Habitat (highest structure, roof, antenna and occupied floor) and have the highest publicly accessible observation deck.
Burj Dubai's 160 floors will be filled by hotel rooms, private apartments, and corporate offices, and serviced by 65km/h lifts, the world's fastest.
Lifts, according to skyscraper architect Henry Feiner of Harry Seidler and Associates, are one of the major constraints on skyscrapers.
"If you try to put in enough lifts to service 150-200 floors, you'll end up with no floor space on every floor. It's all taken up by lift shafts," he said.
The solution — although time-consuming for those on the upper floors — is to design the building as one skyscraper stacked on another.
"It becomes a series of 50-storey buildings stacked on top of each other where you have express shuttle lifts taking you to sky lobbies — a platform at the 50-storey level — and then you start all over again."
The skyscraper will also feature several retail outlets including The Dubai Mall, one of the world's largest shopping and entertainment destinations.
The soaring building will also feature recreational facilities and entertainment venues, four swimming pools, a cigar club, a library, exclusive residents' lounge, serviced residences, 15,000 square feet of fitness facilities and an observatory.
Emaar Properties said the 512m (1,680ft) Burj Dubai is now taller than Taiwan's 508m (1,667ft) Taipei 101.
It is thought Burj Dubai will eventually be 693m (2,275ft) tall.
Height records are contentious, with dispute over what defines a "building" and what is being measured - height to the top floor or the tower's antenna.
When finished the building is expected to meet the Council on Tall Buildings and Urban Habitat's four criteria - the height of the structural top, highest occupied floor, the roof's top, and the spire's highest point - to become the world's tallest structure.
"Burj Dubai has now reached 141 storeys, more storeys than any other building in the world," the company said in a statement.
There is speculation that, spire included, the final height could be more than 800m, but Emaar is keeping structural details secret.
'Symbol of Dubai'
When finished, the skyscraper will have more than 160 floors, 56 elevators, apartments, shops, swimming pools, spas, corporate suites, Italian fashion designer Giorgio Armani's first hotel, and an observation platform on the 124th floor.
To qualify as a building, a structure has to have floors and walls all the way to its roof.
The tower is also expected to break the record for highest man-made structure, currently held by the wire-assisted KVLY-TV mast in North Dakota, US, which is 628m (2,072ft) tall.
"It's a symbol of Dubai as a city of the world," Greg Sang, the project director for Emaar Properties, was quoted as saying by the Associated Press.
Chairman Mohammed Ali Alabbar said Dubai has "resisted the usual and has inspired to build a global icon," according to AP.
"It's a human achievement without equal."
Building began on the structure on 21 September 2004, and is expected to be completed in 2008.
The spire of the building is expected to be able to be seen from 100km (60 miles) away.
"It's a fact of life that, at some point, someone else will build a taller building," Mr Sang said.
"There's a lot of talk of other tall buildings, but five years into Burj Dubai's construction, no one's started building them yet."
Previous skyscraper record-holders include New York's Empire State Building at 381m (1,250 ft); Shanghai's Jin Mao Building at 421m (1,381 ft); Chicago's Sears Tower at 442m (1,451 ft) and Malaysia's Petronas Towers at 452m (1,483 ft).
The CN Tower, in Toronto, Canada, is the world's tallest freestanding structure, at 553m (1,815.3 ft).
The Burj Dubai skyscraper in the United Arab Emirates is to officially become the world's tallest tower on Saturday - and it's only half built.
The super-structure is set to overtake current record holder Taipei 101 which measures 509 metres and has already surpassed Sears Tower in Chicago, CN Tower in Toronto and television masts in North Dakota and Warsaw.
Its final height - conservatively estimated to be between 818 and 940 metres - has yet to be revealed by developer Emaar Properties but when complete it will hold the record in all four categories as recognised by the Council on Tall Buildings and Urban Habitat (highest structure, roof, antenna and occupied floor) and have the highest publicly accessible observation deck.
Burj Dubai's 160 floors will be filled by hotel rooms, private apartments, and corporate offices, and serviced by 65km/h lifts, the world's fastest.
Lifts, according to skyscraper architect Henry Feiner of Harry Seidler and Associates, are one of the major constraints on skyscrapers.
"If you try to put in enough lifts to service 150-200 floors, you'll end up with no floor space on every floor. It's all taken up by lift shafts," he said.
The solution — although time-consuming for those on the upper floors — is to design the building as one skyscraper stacked on another.
"It becomes a series of 50-storey buildings stacked on top of each other where you have express shuttle lifts taking you to sky lobbies — a platform at the 50-storey level — and then you start all over again."
The skyscraper will also feature several retail outlets including The Dubai Mall, one of the world's largest shopping and entertainment destinations.
The soaring building will also feature recreational facilities and entertainment venues, four swimming pools, a cigar club, a library, exclusive residents' lounge, serviced residences, 15,000 square feet of fitness facilities and an observatory.
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