Related Links: Heavy Lifters: How Much Can You Bench? Today's heavy-lifting toolbox is diverse. Technology is constantly improving, making alternative lifting devices more feasible for large-scale modular construction. Below is a sampling of equipment riggers employ on these projects.PLATFORM TRAILERS: Calling this heavy-haul device a trailer "is selling it very short—it really is a rigging tool," says Jeff Latture, senior vice president at Barnhart Crane & Rigging. Whatever you call them, these modular machines come at a steep cost. Many are imported from Germany, with prices starting at $45,000 per axle for a trailer that requires a prime mover and
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.