Quanta Services Inc. signed a definitive agreement to acquire Valard Construction, Edmonton, Alberta, one of Canada’s largest contractors for electric power lines. The transaction, announced that on Oct. 22, is valued at approximately $219 million. Valard stockholders will receive about $118.9 million in cash and about 4.5 million in common and exchangeable shares of Houston-based Quanta stock. Quanta ranked No. 2 on this year’s ENR Top 600 Specialty Contractors list (ENR 11/11 p. 56) with contracting revenue of $3.32 billion in 2009. “We expect Valard’s revenue to be between $225 million and $250 million in 2011,” says John R. Colson,
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.