Strict college professors like to shake up their students on the first day of class by telling them, “Look to your left, look to your right. One of you will not be here at the end of the year.” That same scenario applies to the construction industry this year. When the market meltdown began last fall, you could have taken a group of construction executives and told them, “Look to your left, look to your right. One of your firms won’t be here in a year.” The industry is coming up on the first anniversary of the 2008 stock-market crash
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.