New Product Announcements 06/16/2010 Compact Hack Saw: Tool-Free Blade Change The Compact Hack Saw is part of Milwaukee’s new line of redesigned hand tools. The saw features a narrow profile for cutting in tight spaces and making flush cuts. The compact hack saw boasts a tool-free blade change as well as an ergonomic handle with a rubber-over-mold grip. Milwaukee Electric Tool Corp.; 800-729-3878; www.milwaukeetool.com Multiple Tools: Ratchet for Scaffolding Installation The WrightGrip SB Ratchet is designed specifically for scaffolding installation applications. The tool features a 1/2-in.-drive, 7/8-in. open-head ratchet, a replaceable hammer and a 7/8-in. open-end wrench. The hammer is available
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.