world's largest

Indoor sports and physical training building. The stadium by the use of nature can be divided into the competition hall and two training halls; in sports can be divided into the basketball hall, ice hockey, track and Field Museum Museum; according to body size can be divided into large, medium, small, according to the general audience seat number division, China is now the audience of more than 8000 known as the large gymnasium,indoor sports
less than 3000 of the known as the small gymnasium, between called gym.
Currently the world's largest stadium is the United States Michigan Pontiac stadium, can accommodate 80000 spectators. China is currently the largest stadium was built in 1968 and 1975 the Beijing Capital Gymnasium built in Shanghai Stadium (see pictures ), can let the audience of 18000 people. Completed in 1961 in Beijing Workers Stadium, can accommodate 15000 spectators ( Figure 1 ). Completed in 1975 in Mount Wutai of Nanjing gymnasium, can accommodate 10000 spectators. The famous International Stadium: 1960 Rome built large stadium and the Rome sports palace; completed in 1964 in Tokyo's Yoyogi national gymnasium was completed in 1972; the Federal Republic of Germany Munich Sports Center gymnasium. Completed in 2008 the National Stadium (Bird's nest ). The stadium is mostly used as a mass rally, theatrical performances and acrobatics performances.
Design Essentials

Traffic evacuation

The stadium base planning layout to be reasonable, large gymnasium design should be considered in the flow of traffic and the contradiction between city traffic,Design Essentials
including in the city stadium traffic during the peak load and the contradiction and conflict between the emergency vehicle route. The one hand to ensure that the stadium a large audience evacuation ( 4 ~ 5 minutes all evacuate to the outside of the building ), on the other hand to avoid the stadium when using large flow of traffic and city traffic jam. The stadium due to large area of parking, and near the road.
Plane layout

Gymnasium layout should be in strict accordance with international standards, such as tennis, volleyball game clear height of not less than 12 meters. General adaptation international competition gymnasium of not less than 15 metres in height. The audience to be arranged in the best visual range. The venue of the long axis direction should not be a natural lighting window. Competition venues and training venues should be easy to contact. The chairman's podium position shall be game ceremony requires the selection of position, the best to moderate vision gymnasium section. The station staff, the athletes and spectators import route and room should be separated from. Athletes entrance should be located opposite to the podium. The panel of judges,pearl jewelry scoreboard, a timing device, radio, television and electric control chamber position shall be reasonable arrangement, in order to make the game smoothly.
Profile design

The audience stands of section design directly affect the ornamental quality. Auditorium designed ladder shape, slope is generally less than 30 degrees, the step height is generally not more than 45 cm. In profile design, for the site to determine the height of, according to traffic, transport machinery, construction cost consideration. General gymnasium field elevation is approach to the natural floor and the floor.
Roof structure

Large span roof structure of gymnasium, in the architectural design occupies an important position, and plays a decisive role to the building. The stadium construction to promote the development of long-span structures. Available space grid structure, cable structure, the inflatable structure. Beijing Capital Stadium, Nanjing Mount Wutai stadium roof space truss structure; the Beijing workers' gymnasium roof is suspended structure; the United States of America Michigan Pang pedicle gymnasium roof of the gymnasium is the yaak inflatable structure; the Federal Republic of Germany in Munich Olympic sports center gymnasium roof is a tension structure.