Burj Khalifa
Development

Construction began on 12 January 2004, with the exterior of the structure completed on 1 October 2009. The building officially opened on 4 January 2010 and is part of the 2 km (490-acre) Downtown Dubai development at the 'First Interchange' along Sheikh Zayed Road, near Dubai's main business district.

The tower's architecture and engineering were performed by Skidmore, Owings & Merrill of Chicago, with Adrian Smith as chief architect, and Bill Baker as a chief structural engineer. The firm had designed the Sears Tower in Chicago, a previous record holder for the world's tallest building.

Hyder Consulting was supervising engineer and NORR Group Consultants supervised the architecture The primary contractor was Samsung C&T of South Korea, together with the Belgian group BESIX and the local company Arabtec.

Numerous complaints concerned migrant workers from South Asia, the primary building labour force, who were paid low wages and sometimes had their passports confiscated.
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