Officials are investigating the partial collapse of a seven-year-old precast office- tower parking deck in Atlanta that left a tangle of crushed cars in its wake but no reported injuries at ENR press time. The collapse occurred on Monday, June 29, at the Centergy office complex in midtown Atlanta. The center section of the eight-floor deck collapsed at the fourth level, pancaking the floors below it down to grade. More than 35 cars were crushed in the collapse. The cause of the collapse is unclear, and efforts to stabilize the structure are ongoing, say officials. The 460,000-sq-ft parking deck was
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.