Products 05/18/2011 Gas-Powered Asphalt Router: Repairs Cracks The Cimline PCR-30 is a gas-powered asphalt router with a built-in anti-kickback system to prevent backward movement during use. It is powered by a 30-hp Kolher engine, and its two-piece roller drum is balanced on heavy-duty roller bearings. The PCR-30’s Cut Control option allows for the cut depth to be set and preserved even when moving between cracks. Cimline; 800-328-3874; www.cimline.com Pipe-Fusion Preparation: Remotely Operated Rack System The MegaMc PolyHorse is a pipe-handling system designed to speed installation of 20-in. to 40-in. polyethylene pipe. The powered pipe stands allow for a single operator
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.