Enormous pendulum helps keep Taiwan's tallest building from swaying. Inside the #Taipei101 skyscraper in Taiwan is the world’s largest and heaviest tuned mass damper. Essentially acting as a giant pendulum, the enormous steel sphere moves slightly back and forth to counter any motion of the building itself. It is an engineering marvel meant to limit the vibrations of the 1,667-foot tall building. It has a mass of 728 tons and has a diameter of 5.4 metres. This is the record movement realised dur