<Table> <Tr> <Th_colspan="2"> Burj Khalifa </Th> </Tr> <Tr> <Td_colspan="2"> برج خليفة </Td> </Tr> <Tr> <Td_colspan="2"> The Burj Khalifa in October 2012 </Td> </Tr> <Tr> <Th> Former names </Th> <Td> Burj Dubai </Td> </Tr> <Tr> <Th_colspan="2"> Record height </Th> </Tr> <Tr> <Td_colspan="2"> Tallest in the world since 2008 </Td> </Tr> <Tr> <Th> Preceded by </Th> <Td> Taipei 101 </Td> </Tr> <Tr> <Th_colspan="2"> General information </Th> </Tr> <Tr> <Th> Status </Th> <Td> Complete </Td> </Tr> <Tr> <Th> Type </Th> <Td> Mixed - use </Td> </Tr> <Tr> <Th> Architectural style </Th> <Td> Neo-futurism </Td> </Tr> <Tr> <Th> Location </Th> <Td> 1 Sheikh Mohammed bin Rashid Boulevard, Dubai, United Arab Emirates </Td> </Tr> <Tr> <Th> Coordinates </Th> <Td> 25 ° 11 ′ 49.7" N 55 ° 16 ′ 26.8" E ﻿ / ﻿ 25.197139 ° N 55.274111 ° E ﻿ / 25.197139; 55.274111 Coordinates: 25 ° 11 ′ 49.7" N 55 ° 16 ′ 26.8" E ﻿ / ﻿ 25.197139 ° N 55.274111 ° E ﻿ / 25.197139; 55.274111 </Td> </Tr> <Tr> <Th> Construction started </Th> <Td> 6 January 2004 </Td> </Tr> <Tr> <Th> Completed </Th> <Td> Intended: September 2008; Revised: 2 December 2009 </Td> </Tr> <Tr> <Th> Opened </Th> <Td> 4 January 2010 </Td> </Tr> <Tr> <Th> Cost </Th> <Td> USD $1.5 billion </Td> </Tr> <Tr> <Th_colspan="2"> Height </Th> </Tr> <Tr> <Th> Architectural </Th> <Td> 828 m (2,717 ft) </Td> </Tr> <Tr> <Th> Tip </Th> <Td> 829.8 m (2,722 ft) </Td> </Tr> <Tr> <Th> Roof </Th> <Td> 828 m (2,717 ft) </Td> </Tr> <Tr> <Th> Top floor </Th> <Td> 584.5 m (1,918 ft) (Level 156) </Td> </Tr> <Tr> <Th> Observatory </Th> <Td> 555.7 m (1,823 ft) (Level 148) </Td> </Tr> <Tr> <Th_colspan="2"> Technical details </Th> </Tr> <Tr> <Th> Material </Th> <Td> Glass, steel, aluminium, reinforced concrete </Td> </Tr> <Tr> <Th> Floor count </Th> <Td> 163 above ground . 154 usable floors plus 9 maintenance levels (46 spire levels) and 2 below - ground parking levels </Td> </Tr> <Tr> <Th> Floor area </Th> <Td> 309,473 m (3,331,100 sq ft) </Td> </Tr> <Tr> <Th> Lifts / elevators </Th> <Td> 57 (55 single deck and 2 double deck), made by Otis Elevator Company </Td> </Tr> <Tr> <Th_colspan="2"> Design and construction </Th> </Tr> <Tr> <Th> Architect </Th> <Td> Adrian Smith at SOM </Td> </Tr> <Tr> <Th> Developer </Th> <Td> Emaar Properties </Td> </Tr> <Tr> <Th> Structural engineer </Th> <Td> Bill Baker at SOM </Td> </Tr> <Tr> <Th> Main contractor </Th> <Td> <Ul> <Li> Samsung C&T Corporation, Besix and Arabtec </Li> <Li> Supervision Consultant Engineer & Architect of Record Hyder Consulting </Li> <Li> Construction Project Manager Turner Construction </Li> <Li> Grocon </Li> <Li> Planning Bauer AG and Middle East Foundations </Li> <Li> Lift contractor Otis </Li> <Li> VT consultant Lerch Bates </Li> </Ul> </Td> </Tr> <Tr> <Th_colspan="2"> Website </Th> </Tr> <Tr> <Td_colspan="2"> www.burjkhalifa.ae </Td> </Tr> </Table> <Tr> <Th_colspan="2"> Burj Khalifa </Th> </Tr>

When was the burj khalifa finished being built