How a 730-Ton Ball Kept the Second Tallest Building From Falling During the Chinese Earthquake

From gizmodo….

Gizmodo: The recent Sichuan Earthquake in China was so intense, tremors were felt all the way over in the tallest completed building in the world—the Taipei 101 building in Taiwan—a whole eight minutes after the quake originated. (The title of tallest building period was taken by the Burj Dubai back in May.) What’s interesting about the 101 is that it has a gigantic suspended tuned mass damper, or hanging ball, which takes up four stories and works like this to prevent the building from falling over and tragically crushing office workers. This 730 ton sphere looks intimidating when still, but wait until you see it in motion during the earthquake. More »

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