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Watch the incredible force of a typhoon move a skyscraper's 700-ton mass damper

from Gizmodo

From Aug. 13: Mass dampers are designed to counteract the swaying of a skyscraper as it's buffeted by strong winds or earthquakes. But it's incredibly rare to see one of these huge devices moving more an a few inches. Unless, of course, there’s a typhoon nearby. As the deadly Typhoon Soudelor swept across Taiwan and eastern China, winds reached upwards of 130 mph, bending mailboxes and lifting 747s off the ground in Taiwan. How did Taipei 101, one of the world's tallest buildings at 1,651 feet, deal with the force of the winds? Like most supertall skyscrapers, 101 has something called a mass damper that's designed to counteract the lateral (sideways) force of winds. And during the worst of the storm, it broke a record for how much it swayed, as Popular Mechanics explains. more


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