Beijing National Stadium , also known as the National Stadium , or colloquially as the Bird's Nest , is a stadium in Beijing, China. The stadium was designed for use throughout the 2008Summer Olympics and Paralympics.
Located in the Olympic Green, the $423 million stadium is the world's largest steel structure.The design was awarded to a submission from the Swiss architecture firm Herzog & de Meuron in April 2003, after a bidding process that included 13 final submissions. The design, which originated from the study of Chinese ceramics, implemented steel beams in order to hide supports for the retractable roof; giving the stadium the appearance of a "Bird's nest".
Located in the Olympic Green, the $423 million stadium is the world's largest steel structure.The design was awarded to a submission from the Swiss architecture firm Herzog & de Meuron in April 2003, after a bidding process that included 13 final submissions. The design, which originated from the study of Chinese ceramics, implemented steel beams in order to hide supports for the retractable roof; giving the stadium the appearance of a "Bird's nest".
Beijing National Stadium is located in the south central area of the Olympic Park, 2008 29th Olympic Games Main Stadium. The total area of 21 hectares, construction area of 258,000 ㎡. Venue seating 
about 91,000 spectators, of which about 11,000 temporary seats. Will be held in the Olympic Games, Paralympic Games opening and closing ceremonies, track and field competitions and football finals match. Beijing Olympic Games will become a broad public participation in sports and entertainment to enjoy large-scale professional sports venues, and to be a landmark building and the Olympic sports legacy. National Stadium for the super sports construction projects, the main structure of the design life span of 100 years, fire resistance rating for a level seismic intensity of 8 degrees, the underground water level of a project. The main construction works were oval-shaped space saddle, 333 meters long from north to south, east-west width of 294 meters, 69 meters high. The main steel structure of the giant space to form an overall saddle-shaped braided steel truss-style "bird's nest" structure, steel structure of the total steel 42,000 tons of concrete grandstand is divided into upper, middle and lower three-story, concrete structure stands underground 1 layer , 7 on the ground floor of reinforced concrete frame - shear wall structural system. The upper part of steel and concrete grandstand completely torn off and the separate, formal mutual Wai were combined, the foundation is sitting on a floor on the basis of connected.
about 91,000 spectators, of which about 11,000 temporary seats. Will be held in the Olympic Games, Paralympic Games opening and closing ceremonies, track and field competitions and football finals match. Beijing Olympic Games will become a broad public participation in sports and entertainment to enjoy large-scale professional sports venues, and to be a landmark building and the Olympic sports legacy. National Stadium for the super sports construction projects, the main structure of the design life span of 100 years, fire resistance rating for a level seismic intensity of 8 degrees, the underground water level of a project. The main construction works were oval-shaped space saddle, 333 meters long from north to south, east-west width of 294 meters, 69 meters high. The main steel structure of the giant space to form an overall saddle-shaped braided steel truss-style "bird's nest" structure, steel structure of the total steel 42,000 tons of concrete grandstand is divided into upper, middle and lower three-story, concrete structure stands underground 1 layer , 7 on the ground floor of reinforced concrete frame - shear wall structural system. The upper part of steel and concrete grandstand completely torn off and the separate, formal mutual Wai were combined, the foundation is sitting on a floor on the basis of connected. 
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