Bird's Nest Ⅲ

The stadium's stand has a concrete framework. The upper part of the stand and the stadium's steel structure are separated from each other, but both are based on a joint footing. The roof of the National Stadium is covered by a double-layer membrane structure, with a transparent ETFE membrane fixed on the upper part of the roofing structure and a translucent PTFE membrane fixed on its lower part.

In the original design, the stadium called for a capacity of 100,000 people; however 9,000 were removed during a simplification of the design. The new total of 91,000 was shaved further when 11,000 temporary seats were removed after the 2008 Olympics, bringing the stadium's capacity to 80,000.