Used construction-equipment values are creeping up after bottoming out last summer, a sign that credit is looser and fewer firms are ditching their fleets. Values rose for the fifth month straight in February, posting a 1.9% monthly gain and a 6.2% six-month increase, according to Beverly Hills, Calif.-based appraiser Rouse Asset Services. Monthly gains of 13.1% for straight-boom lifts, 7.2% for articulating-boom lifts, 3.5% for telehandlers and others propped up values, while prices declined 1.4% for dozers and 0.8% for compactors. However, values still are 26.6% below April 2007’s market peak. Source: Rouse Value Index. Average Orderly Liquidation Value for
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.