Attendees of the Society of American Military Engineers' annual agency briefing burst into applause last month upon hearing the news the U.S. Army Corps of Engineers is moving to a platform-neutral approach to building information modeling software for its standardized building designs contracted through its Centers for Standardization. Rendering: Courtesy of STV Inc. Virtual model of Ft. Stewart, Ga., Army brigade building was used for structural erection. Their delight may be short-lived. The Corps' apparent reversal of a policy that mandated use of only Bentley Systems Inc. software for BIM project models has a few more twists. Each of the
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.