There’s controversy brewing in Washington state over a rule, proposed by the Board of Registration for Professional Engineers and Land Surveyors, that would grant comity to Canadian and U.S. engineers on the basis of licensure rather than written examinations. The proposed Chapter 196-13 WAC needs support from four of seven board members to pass. The opposition claims such a rule would diminish public safety, increase construction costs and harm engineers licensed in Washington, who must pass exams. “There is a fundamental life-safety issue,” says Douglas N. Campbell, an engineer in Bellingham, Wash., who opposes the rule. More than 700 petitions
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.