As Congress negotiates billions of dollars in potential federal funds for construction through the economic stimulus bill, President Barack Obama moved to bring project labor agreements back as an option on federally funded projects. The president issued an executive order Feb. 6 overturning a Bush administration ban on federal PLAs and opened the door to such pacts on projects of $25 million or more. Photo: Obama Campaign President Barack Obama Related Links: Full text of the Executive Order Three Executive Orders Good News for Labor Photo: New York State Huge infrastructure projects, such as the planned replacement of New York’s
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.