New product announcements: 04/07/2010 Scissor Lift: Tight Turns for Proper Positioning The Omni Drive Scissor Lift is designed to provide machine movement in all directions and allows for rotation around its center point. This swivel capability permits the lift to be maneuvered in tight areas. The Omni Lift comes in four models, with platform heights of 20 ft to 40 ft and capacities of 700 lb to 1,500 lb. Stowed heights range from 81 in. to 114 in. Options include a bump system to reduce accidental damage and an EX explosion-proof version for use in hazardous environments. Man & Material
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.