Related Links: ENR: Fresh Hope for Homebuilders ENR Mountain States Multifamily construction is booming despite the slow economic recovery for commercial and single-family markets, but it is a very different market than it was 10 years ago. Like other segments of construction, the increasing number of firms in multifamily has driven profit margins down. As a result, bidding errors or unanticipated project costs, which were once part of doing business and could be absorbed within the contract price, can now wipe out all profits on a project and even threaten a company's overall financial strength.Multifamily's healthy backlog of work has
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.