- 29th May 2018
Burj Khalifa – Dubai, United Arab Emirates
The Burj Khalifa, previously known as Burj Dubai, has been the tallest structure in the world since 2008.
5 things you should know about the Burj Khalifa:
- The Architectural height of the building is 828 m (2,717 ft).
- The Burj Khalifa has a total floor area of 309,473 m² (3,331,100 sq ft).
- The building cost approximately $1.5bn to build.
- The Burj Khalifa has 57 elevators and 8 escalators.
- Construction took 22mn man-hours.
The Burj Khalifa was designed by Adrian Smith, then of Skidmore, Owings & Merrill (SOM), whose firm designed the One World Trade Centre and Willis Tower. The Architectural style of the building is neo-futurism and is made of aluminium, glass, reinforced concrete and steel.
Construction began in 2004, with the exterior being completed 5 years later in 2009. The building was then officially opened on the 4th January 2010 and has 163 levels above ground (154 usable floors and 9 maintenance levels), as well as 46 spire levels and 2 below-ground parking levels. It is thought that the exterior temperature at the top of the building is 6°c cooler than at its base.
The Burj Khalifa uses the bundled tube design which was invented by Fazlur Rahman Khan. Due to the use of the tubular system, proportionally, the design uses half the amount of steel that was used in the construction of the Empire State Building. The Burj Khalifa was constructed using 55,000 tonnes of steel rebar, with its spire alone being comprised of more than 4,000 tonnes of structural steel.
When the building was going through its design stage, the Architects needed to consider the intense desert sun, strong winds and extreme temperatures, they therefore decided to use architectural glass that would provide superior solar and thermal performance, as well as an anti-glare shield. The Burj Khalifa has a total of 24,348 windows, which totals to 120,000 m² (1,290,000 sq ft) of glass.
- Tallest existing structure: 829.8 m (2,722 ft)
- Tallest structure ever built: 829.8 m (2,722 ft)
- Tallest freestanding structure: 829.8 m (2,722 ft)
- Tallest skyscraper (to top of spire): 828 m (2,717 ft)
- Tallest skyscraper to top of antenna: 829.8 m (2,722 ft)
- Building with most floors: 211 (including spire)
- World’s highest elevator installation (situated inside a rod at the very top of the building)
- World’s longest travel distance elevators: 504 m (1,654 ft)
- Highest vertical concrete pumping (for a building): 606 m (1,988 ft)
- World’s tallest structure that includes residential space
- World’s highest outdoor observation deck: 124th floor at 452 m (1,483 ft)
- World’s highest installation of an aluminium and glass façade: 512 m (1,680 ft)
- World’s highest nightclub: 144th floor
- World’s highest restaurant (At.Mosphere): 122nd floor at 442 m (1,450 ft)
- World’s highest New Year display of fireworks
- Previously the world’s highest occupied floor: 584.5 m (1,918 ft) and observation deck: 148th floor at 555 m (1,821 ft), until being surpassed by Shanghai Tower in 2015.