Current records
Tallest skyscraper to top of spire: 828 m (2,717 ft) (previously Taipei 101 – 509.2 m/1,671 ft)
Tallest structure ever built: 828 m (2,717 ft) (previously Warsaw radio mast – 646.38 m/2,121 ft)
Tallest extant structure: 828 m (2,717 ft) (previously KVLY-TV mast – 628.8 m/2,063 ft)
Tallest freestanding structure: 828 m (2,717 ft) (previously CN Tower – 553.3 m/1,815 ft)
Building with most floors: 160 (previously Willis Tower – 108)[22]
Building with highest occupied floor in the world: 160th floor[23]
World's highest elevator installation, situated inside a rod at the very top of the building[24][25]
World's fastest elevators at speed of 64 km/h (40 mph) or 18 m/s (59 ft/s)[25] (previously Taipei 101 – 16.83 m/s)
Highest vertical concrete pumping (for a building): 606 m (1,988 ft)[26] (previously Taipei 101 – 449.2 m/1,474 ft)
The first world's tallest structure in history to include residential space[27]
Highest outdoor observation deck in the world (124th floor) at 452 m (1,483 ft)[28][29]
World's highest mosque (located on the 158th floor)[30][31]
World's highest installation of an aluminium and glass façade, at a height of 512 m (1,680 ft)[32]
World's highest swimming pool (76th floor)
Tallest skyscraper to top of spire: 828 m (2,717 ft) (previously Taipei 101 – 509.2 m/1,671 ft)
Tallest structure ever built: 828 m (2,717 ft) (previously Warsaw radio mast – 646.38 m/2,121 ft)
Tallest extant structure: 828 m (2,717 ft) (previously KVLY-TV mast – 628.8 m/2,063 ft)
Tallest freestanding structure: 828 m (2,717 ft) (previously CN Tower – 553.3 m/1,815 ft)
Building with most floors: 160 (previously Willis Tower – 108)[22]
Building with highest occupied floor in the world: 160th floor[23]
World's highest elevator installation, situated inside a rod at the very top of the building[24][25]
World's fastest elevators at speed of 64 km/h (40 mph) or 18 m/s (59 ft/s)[25] (previously Taipei 101 – 16.83 m/s)
Highest vertical concrete pumping (for a building): 606 m (1,988 ft)[26] (previously Taipei 101 – 449.2 m/1,474 ft)
The first world's tallest structure in history to include residential space[27]
Highest outdoor observation deck in the world (124th floor) at 452 m (1,483 ft)[28][29]
World's highest mosque (located on the 158th floor)[30][31]
World's highest installation of an aluminium and glass façade, at a height of 512 m (1,680 ft)[32]
World's highest swimming pool (76th floor)
History of height increases
Burj Khalifa compared to some other well-known tall structures
There are unconfirmed reports of several planned height increases since its inception. Originally proposed as a virtual clone of the 560 m (1,837 ft) Grollo Tower proposal for Melbourne, Australia's Docklands waterfront development, the tower was redesigned by Skidmore, Owings and Merrill (SOM).[33] Marshall Strabala, an SOM architect who worked on the project until 2006, late 2008 said that Burj Khalifa was designed to be 808 m (2,651 ft) tall.[34]
The design architect, Adrian Smith, felt that the uppermost section of the building did not culminate elegantly with the rest of the structure, so he sought and received approval to increase it to the current height.[citation needed] It has been explicitly stated that this change did not include any added floors, which is fitting with Smith's attempts to make the crown more slender.
Burj Khalifa compared to some other well-known tall structures
There are unconfirmed reports of several planned height increases since its inception. Originally proposed as a virtual clone of the 560 m (1,837 ft) Grollo Tower proposal for Melbourne, Australia's Docklands waterfront development, the tower was redesigned by Skidmore, Owings and Merrill (SOM).[33] Marshall Strabala, an SOM architect who worked on the project until 2006, late 2008 said that Burj Khalifa was designed to be 808 m (2,651 ft) tall.[34]
The design architect, Adrian Smith, felt that the uppermost section of the building did not culminate elegantly with the rest of the structure, so he sought and received approval to increase it to the current height.[citation needed] It has been explicitly stated that this change did not include any added floors, which is fitting with Smith's attempts to make the crown more slender.
Delay
Emaar Properties announced on 9 June 2008 that construction of Burj Khalifa was delayed by upgraded finishes and would be completed only in September 2009.[36] An Emaar spokesperson said "The luxury finishes that were decided on in 2004, when the tower was initially conceptualized, is now being replaced by upgraded finishes. The design of the apartments has also been enhanced to make them more aesthetically attractive and functionally superior."[37] A revised completion date of 2 December 2009 was then announced.[38] However, Burj Khalifa was opened on 4 January 2010.
Emaar Properties announced on 9 June 2008 that construction of Burj Khalifa was delayed by upgraded finishes and would be completed only in September 2009.[36] An Emaar spokesperson said "The luxury finishes that were decided on in 2004, when the tower was initially conceptualized, is now being replaced by upgraded finishes. The design of the apartments has also been enhanced to make them more aesthetically attractive and functionally superior."[37] A revised completion date of 2 December 2009 was then announced.[38] However, Burj Khalifa was opened on 4 January 2010.
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