Facts about the Burj Khalifa
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Rainwater collected on the Burj Khalifa's roof supplies approximately 218,000 gallons annually for irrigation and cooling system use, reducing freshwater consumption in the desert city.
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Seventeen of the Burj Khalifa's 163 floors contain the Armani Hotel, which opened in 2011 and spans levels 1 through 8 and 38 through 39.
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Engineers designed the Burj Khalifa's foundation with 192 piles driven 50 meters deep into the bedrock to support the structure's 500,000-ton total weight.
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The Burj Khalifa's Y-shaped floor plan was engineered to reduce wind loads, allowing the structure to withstand Dubai's occasional dust storms and extreme heat without structural damage.
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Visitors ascending the Burj Khalifa experience a 1.5-meter-per-second elevator ride that reaches the 124th floor observation deck in approximately 60 seconds.
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Approximately 24,000 tons of cooling capacity keep the Burj Khalifa's 900 residential and hotel units comfortable, consuming roughly 330,000 megawatt-hours of electricity annually.
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At 555 meters, the Burj Khalifa's observation deck on the 124th floor held the record for world's highest observation deck until 2016.
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During peak summer temperatures, the Burj Khalifa's exterior glass panels expand and contract by up to 15 centimeters due to thermal stress in the Dubai heat.
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Over 330,000 tons of materials were used in the construction of Dubai's Burj Khalifa, requiring approximately 22 million man-hours of labor from 2004 to 2010.
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Completed in 2010, the Burj Khalifa in Dubai stands 828 meters tall with 163 floors, making it the world's tallest building.