The audience capacity of the Bird's Nest is 0.5 times that of the 65438+ Germany World Cup and twice that of the Athens Olympic Games. It is the largest steel gymnasium in the world.

After a "slimming", the Bird's Nest cancelled the openable roof and expanded the opening of the roof. The planned total steel consumption is about 42,000 tons.

The stands of the Bird's Nest are designed like a big bowl, which is a folded structure around the stadium. The upper and lower floors are staggered, so that the audience can keep a line of sight distance from the center of the competition venue no matter where they sit.

The "Bird's Nest" is designed with fluid mechanics, which simulates the natural ventilation of 965,438+0,000 people watching the game at the same time, so that all spectators can enjoy the same natural light and natural ventilation and hear the same clear live broadcast.