The Senate was expected at press time to try again to vote on a revised package of tax-break extensions for companies and individuals. A June 17 attempt to bring the “extenders” bill up for a vote failed. The House passed its tax measure in May. The Senate bill, scaled back from an earlier version, has items that construction groups like, including an extension for the Build America Bonds program. But the bill also would hike taxes on firms organized as “S” corporations, though not as much as the earlier version would have. Groups such as the Associated Builders and Contractors
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.