Construction’s unemployment rate rose slightly in October to 17.3% from September’s 17.2%, but the good news was that it was better than October 2009’s 18.7% rate. The Bureau of Labor Statistics’ latest monthly employment report, released on Nov. 5, also shows that construction posted an increase in jobs for the month, though the gain was only 5,000. October marks only the second month so far this year that the industry’s unemployment rate improved from 2009’s levels. BLS says that, in October, non-residential specialty trade contractors added 7,300 jobs and heavy-civil construction’s workforce rose by 4,800. On the negative side, 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.