Related Links: See who else has moved up, or moved on, in the AEC sector BelechakJoseph G. Belechak has been promoted to chief operating officer, a new position, at Pittsburgh-based contractor dck Worldwide LLC. Since joining last September, he has been senior vice president of strategy and operational excellence. Belechak formerly is a senior vice president of nuclear fuels at Westinghouse Electric Co. and chief operating officer at Duquesne Light. He also was president of a consulting firm, Transformation Services. dck Worldwide ranks at No. 172 on ENR's list of the Top 400 Contractors, with $315 million in 2011
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.