A New Twist on a Weighty Matter

When most people think of tuned mass dampers, they immediately call to mind the variants installed within the stunning Taipei 101 in Taiwan or near the top of the slope-roofed Citigroup Center in NYC. In fact, when the latter opened in 1977, it was the first skyscraper in the United States to feature this type of sway mitigation apparatus. Able to quell movement due to wind by almost 50%, these behemoths weigh in at a far-from-svelte 400+ tons!

Recently, researchers at Virginia Tech, led by architecture professor Mehdi Setareh, developed an incredibly compact, portable tuned mass damper that can reduce structural vibrations in structures by up to 75%. Weighing under 300 lbs., their device can be tuned on-site with a custom smartphone app. This is a far cry from the highly complex tuning methods that need to be employed on large dampers that might otherwise occupy 1000 ft2 of space.

Video and Picture: Professor Mehdi Setareh’s device makes a previously complex, cost-prohibitive technology for reducing structural vibrations universally accessible. Students, including Sriram Sankaranarayanan, a graduate civil engineering student (background), helped with the research.  http://vtnews.vt.edu/articles/2017/01/CAUS-PTMD.html

The Coalition for Responsible Equitable Economic Development (CREED LA) proudly supports environmentally-responsible construction projects throughout Los Angeles that not only have a positive impact on the local community, but support LA’s working families as well.

CREED LA fights to ensure that developers pay fair wages to all the hard working construction professionals throughout the industry while simultaneously providing them with quality health care, continued training, and trustworthy retirement plans. To learn more about how our non-profit organization supports those building a better, greener world for us all, contact CREED LA at (877) 810-7473.