Construction’s unemployment rate declined for the first time in seven months, as the industry gained 15,000 jobs in March, the Bureau of Labor Statistics said April 2. This uptick is the industry’s first monthly increase in jobs, seasonally adjusted, since June 2007. But the 24.9% jobless rate, while down from February’s 27.1%, is still above the 21.1% rate in March 2009. Construction economists praised the latest number but were wary about whether it signals a longer-term jobs trend.
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.