Rendering courtesy of Related Cos The choice of a firm not based in New York City has angered some groups. Work on the $4-billion Hudson Yards project on Manhattan's West Side is set to start by late summer with the recently announced surprise choice of Tutor Perini, Sylmar, Calif., as prime contractor. New York City-based developers Related Cos. and Oxford Properties Group say they will form Hudson Yards Builders, a joint venture with Tishman Construction, to operate as owner-builder for the 26-acre site that is Manhattan's single-largest undeveloped property."[Tutor Perini] has an exemplary track record with complex, large-scale developments," says
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.