Name That Tuned Mass Damper
These days, mega-skyscrapers have balls. Huge balls, up in their attic spaces, designed to swing back and forth in the opposite direction of the building's sway. These tuned mass dampers, as they're known, prevent the feeling of seasickness by occupants of the upper floors, but their real benefit comes during times of natural disasters, like tornadoes, typhoons and earthquakes.
Such was the case recently with the world's tallest completed building, Taipei 101, which felt aftershocks from the devastating 7.9 magnitude earthquake that hit China's Sichuan region on May 12 of this year. As it happens, a traveler with a video camera was enjoying a tour of the building and was wandering past the 728-ton stabilizing ball when the aftershocks hit, capturing this amazing video of the damper doing exactly what it was designed to do.
The iconic tower emerged unscathed, and nobody was injured, which both speaks to the amazing advances in architectural technology and the unspeakable devastation that results when builders lack the means--and scruples--to ensure that every building holds up against the forces of nature as well as possible.
Related Stories:
· In Action: A Skyscraper's Amazing 728-Ton Stabilising Ball [Deputy Dog]
· Skyscrapers coverage [Jaunted]
