The Burj Dubai Towers (now renamed the Burj Khalifa) opened for business this Monday after about six years of construction. At 2,727 feet (828 meters), the tower is the tallest man-made structure in the world, beating out the KVLY-TV mast in Blanchard, North Dakota, United States and the Guangzhou TV & Sightseeing Tower in Guangzhou, China (which was topped-out in 2009 at 610 meters). Check out this video from Al Jazeera for an interview with Bill Baker, the chief structural engineer at designing firm Skidmore, Owings & Merrill LLP.


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