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The Duke Energy Center is a tall, 48-floor (54 floors including mechanical floors) skyscraper in Charlotte, North Carolina. When completed in 2010, it was the largest building in Charlotte (in square footage), second tallest building in Charlotte, and the tallest in the world to use precast double tees built by Prestress of the Carolinas.〔(【引用サイトリンク】title=Wachovia Corporate Center )〕〔(【引用サイトリンク】title=Duke Energy's move symbolizes shift in Charlotte ) 〕 The building is named for its anchor tenant, Duke Energy, and both the tower and the adjacent cultural arts campus are owned by Wells Fargo. Sonnenschein will use on the 34th and 35th floors and Deloitte will use . Originally, the building was to be known as the Wachovia Corporate Center. It was to replace One Wachovia Center as the headquarters of Wachovia. Wachovia was to occupy 〔 〕 of the tower. Wells Fargo plans to use five of its 14 floors.〔 ==Construction== The project was announced in spring of 2004, and official renderings were not released until December 6, 2006. In the original petition to the Charlotte-Mecklenburg Planning Commission, the building was going to be built on a parcel next to 400 South Tryon, with a height of and 34 floors. The site preparation began with the demolition of a Firestone Tire dealership in February 2006, and on February 28, 2006, the excavation and blasting of a -deep hole for the below-grade parking garage began. Over 600,000 pounds of explosives were used during its excavation and it took just over 60,000 dump truck loads to remove all of the excavated material from the site, some of which was used in the construction of a third runway at Charlotte-Douglas International Airport.〔(【引用サイトリンク】title=Wachovia Corporate Center )〕 The building was constructed by (Batson-Cook ) Construction, with ready mix products from (Concrete Supply Co. ) and structural engineering firm TRC International Ltd, of Sarasota, Florida. The building is using poured-in-place concrete core and perimeter and precast double tees, a structure usually used in parking decks. These double trees span between the poured-in-place core and perimeter systems. The concrete used for the building is 18,000 pounds per square inch.〔(【引用サイトリンク】title=Wachovia Corporate Center ) 〕 The building received a certificate of occupancy December 23, 2009, with the lobby and parking garage opening January 2, 2010.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Duke Energy Center」の詳細全文を読む スポンサード リンク
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