The Capital Airport Terminal 3 project, an important supporting facility for the Beijing 2008 Olympic Games, has a total length of 2,900 meters from north to south, a width of 790 meters, and a height of 45 meters, with a total construction area of 986,000 square meters. It is the largest single terminal building in the world. The roof of the main building adopts a spatial reticulated shell structure, supported by 136 welded steel pipe columns. The large pillars supporting the roof on the east and west sides of the terminal building are inclined outwards, and the diameter of the columns gradually decreases from bottom to top, forming a "shuttle-shaped facade". "effect. The project started on March 28, 2004, and was completed in June 2007.