I saw a Rockridge Homes with something akin to a tuned mass damper in the
Only ones I've ever heard of before were atop the Petronas Towers, Tapei 101
(spherical in shape) and CitiCorp Building.
Living in Berkeley by Ira & Carol Serkes
CA Department of Real Estate Licenses 00936453 Ira Serkes 01143916 Carol Serkes