Related Links: Beware the Recovery: What History Teaches Contractors and Sureties At the beginning of the year, I wrote that while no one liked the recession, some contractors and sureties were going to hate the recovery, too. As I said then, a new set of risks will arise as contractors price their work aggressively, profit margins lag and some companies take on too much and burn through their capital.That was pretty gloomy, but I didn't give the complete picture about what can go wrong during the unfolding recovery. Because contractors will price their work aggressively and be hungry for 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.