Photo courtesy Cummins Inc. Cummins and Peterbilt on Feb. 18 demonstrated a SuperTruck prototype that gets 10.7 miles per gallon, an average improvement of 75% since 2009. Related Links: First Fuel-Economy Standards Hit Construction Trucks The Flip Side of Fuel Economy: Less Cash for Road Construction Heavy trucks, including those used in construction, are set to get a second round of fuel-economy restrictions that will extend into the next decade.President Obama on Feb. 18 kicked off the second phase of federal fuel-economy standards for medium and heavy-duty trucks by calling on the Environmental Protection Agency and Dept. of Transportation. to
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.