Transportation and other markets in the emirate countries of the Middle East continue to offer lucrative opportunities for U.S. engineering firms. Qatar leaders on April 6 signed contracts with these firms worth billions of dollars during a Manhattan conference that drew top government and business officials. Related Links: Qatar Forum: Billion dollar deals Parsons Transportation Group will provide design work for two new highways that together are projected to cost more than $1 billion, and is teamed with AECOM on construction management for a $3.5-billion, 30-km light rail network. Jeffrey Squires, Parsons executive vice president, says Qatar's 2022 hosting of
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.