Building information modeling has come a long way recently, but it is still far from being business as usual. That, and lack of BIM software interoperability, were about the only two subjects of general agreement regarding BIM among the 60 attendees of a recent “eConstruction” roundtable, in Phoenix. As recently as two years ago, there were no model BIM contracts and most designers did not have staff trained on BIM, said John Cross, a vice president of the American Institute of Steel Construction, Chicago, which cohosted the March 31 session with the American College of Construction Lawyers. Work-flow efficiency is
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.