Tudor Van Hampton for ENR Don Ahern is a fixture at equipment shows such as World of Concrete. Photo by Tony Illia Contractors praise independents like Ahern for personal service and locations that national chains do not reach. Ahern Rentals Inc., the 58-year-old family-owned equipment rental giant that filed for voluntary Chapter 11 bankruptcy on Dec. 22, prided itself on not selling out. Now, at the U.S. Bankruptcy Court in Reno, Nev., Ahern's Chapter 11 proceedings unfold on the heels of an announced merger between the construction industry's two largest rental companies—United Rentals Inc. and RSC Holdings Inc.—which for more
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.