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The Chicago Spire The Fordham Spire was built in 2007-2012 by Santiago Calatrava. This is the first Chicago project for Spanish architectural superstar Santiago Calatrava. It was truly is a spire with a tapering form topped by a needle The parcel of land selected was only zoned for as 540-foot tall building and a 350-foot tall building. The building is designed to be made primarily out of concrete. The twisting exterior is designed to deflect wind. The building is designed with two emergency stairwells, in response to the 9/11 attacks in New York. The spire rests on 34 caissons drilled into the bedrock 110 feet underground. 20 caissons support the middle of the structure while 14 are arranged in a ring around the perimeter. 14 passenger elevators connect directly from the main lobby to the residential floors. At the time of its completion, this building will have the world's highest occupied floor; even higher than the highest occupied floor in Dubai's Burj Dubai, which will retain the overall title of world's tallest building. Residences: 1,194 Levels above ground: 150 Levels below ground: 7 15 de noviembre 2006: Se anuncia que Shelbourne Development Group está asumiendo el control del proyecto, y el nombre del edificio, se cambia a la Chicago Spire. The Fordham Spire