Part of the roof of Terminal 3 at Beijing Capital International Airport was badly damaged by strong winds on December 10. About 200 square meters of the roof were ripped open by the wind. Bits of the roof ended up on the runway, causing at least 200 flights to be delayed or canceled before the debris was removed. T3 is the world’s third-largest building by area at 986,000 square meters, and the second-largest airport building – only Dubai airport’s T3 is bigger. Ding Jiangang, Chief Designer of T3, said the original design was supposed to be able to withstand wind speeds of up to 102 km/h. The strongest wind speed on December 10 was less than the design limit.