Courtesy of Ford Motor Co. Ford's first gasoline-powered 2012 F-650 rolled off the assembly line on August 15. Courtesy of Ford Motor Co. The 6.8-liter V-10 gas engine fills a void among medium-duty trucks, which are dominated by higher-costing diesels. Related Links: Truck Quality Suffers From Cleaner Diesels A Turbo Twist Comes To Ford's Commercial Van Many private contractors and public fleet owners have been switching their truck fleets to gasoline lately due to the high upfront cost of diesel engines, reliability concerns and the ongoing hassle of maintaining the added emissions equipment. When diesel is not mission-critical to the
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.