An AECOM executive makes a presentation to win a construction management contract for sewer repairs in Miami-Dade County, as shown in in documents provided by rival CH2M Hill's attorney. The $1.6-billion Miami-Dade county sewer repair project has produced a steady flow of controversy as Florida public officials changed the rules for competitors for the prime contract, and the two finalists clashed over the accuracy of their stated qualifications.Where the sales work by the finalists ends, and unethical misrepresentation begins, is hard to tell at this point. Some of it concerns simple math that ought to be easy to agree on.After
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.