More charges flew on Jan. 5 and 6 against construction officials at the center of two of Manhattan’s highest-profile jobsite accidents in the last 18 months. On Jan. 5, a master rigger was indicted for his alleged actions involving a 200-ft-high tower crane that destabilized and collapsed at a Midtown high-rise site last March, killing six workers and a civilian. William Rapetti, 48, was indicted on multiple charges of manslaughter, criminally negligent homicide, assault and reckless endangerment. Manhattan District Attorney Robert Morgenthau also said Rapetti and his firm Rapetti Rigging Services Inc., Massapequa Park, N.Y., failed to file tax returns
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.