Thousands of piles dot the Middle Eastern desert, spreading out in a T-shaped formation. They are the foundations of what will become a 700,000- square-meter airport terminal—and one of the foundations of Abu Dhabi’s ambitious 21st-Century infrastructure plan. The emirate’s long-term goal, to become a top destination for world trade and a cultural crossroads for the East and West—is getting an upgrade. The project now includes green-building and sustainability goals, as well as a growing number of western engineers and consultants brought in to help manage the $2.5-billion Abu Dhabi International Airport expansion and a slew of other projects. “There
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.