Six subcontractors have been sued by the developer of a six-story parking garage in Jacksonville, Fla., that collapsed in December 2007 , killing one worker and injuring 23 others. Atlanta-based developer Berkman Plaza 2 LLC filed the suit Jan. 12 in circuit court in Duval County, Fla., seeking damages "well in excess of" $36 million and demanding a jury trial. Photo: John T. Bell Two-thirds of Berkman Plaza 2 garage collapsed as the sixth floor slab was being poured. Named as defendants in the suit are Southern Pan Services, Co., Davie, Fla.; Universal Engineering Sciences Inc., Orlando, Fla.; Infinity Reinforcing
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.