On the Top 100 Design-Build Firms list, HOK, St. Louis, made an error on its survey and was improperly ranked at No. 50. HOK should be removed from the list. Thus, Webber LLC,The Woodlands, Texas, should rank at No. 100, with revenue of $107 million.
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.