Despite the Dept. of Labor's efforts to improve its process for determining Davis-Bacon Act prevailing wages, it continues to produce potentially inaccurate data, according to the Government Accountability Office. A March 22 GAO report finds that Labor's wage survey has shortcomings in how timely and representative the information is and in using local data as the basis for wage calculations. Among surveys reviewed by GAO, Labor issued 11% of key wage rates at the county level, 42% at the multi-county level and 40% at the state level. More than 25% of rates were based on six or fewer workers. GAO
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.