AP/Wideworld Casino floor collapsed as workers were pouring concrete, injuring 13 people. Investigators looking into the cause of a non-fatal construction collapse of a casino floor in Cincinnati in late January and a casino garage deck in Cleveland in late December are searching for common clues, while contractors have added quality controls for extra safety.The developer of both casinos, a joint venture between Rock Gaming LLC and Caesars Entertainment Inc., insists the accidents are not linked. "These are two different construction management companies, two different contractors, two different sites, two different areas," Steve Rosenthal, manager of the $400-million, 354,000-sq-ft Horseshoe
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.