Photo by Jeff Goldberg/ESTO The concert hall features 842 vineyard-style seats. Related Links: 2013 Best of the Best Projects Winners Bing Concert Hall Team Gives Virtuoso Acoustic Performance Designed to be extremely intimate, Bing Concert Hall's 842 vineyard-style seats are organized in terraced platforms that surround the entire performance space. The optimal acoustical design called for lofty, 48-ft-high ceilings, resulting in 680,000 cu ft of volume—greater than halls with more than three times as many seats. Nine reflective acoustic panels—the largest 43 ft by 51 ft and weighing 8,000 lb—were hung around the curvaceous space. Each panel had a unique
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.