ENCLOSURE Tennessee Valley Authoritys remediation design details the alteration of the coal-ash containment ponds terrain profile.l A record-breaking 11-mile slurry wall in itself is unusual, but the relationship between contractor, engineer and owner is what makes the construction of the wall—at the Tennessee Valley Authority's Kingston fossil plant—even more unusual, says Brian Jasperse, president and CEO of Geo-Con, Pittsburgh.“It's been a very interesting process,” Jasperse says. “It's a really good example of the engineer, contractor and owner trying to tweak the design. It's highly unusual, and as a result we're putting together a good product.”Knoxville, Tenn.-based TVA and its remediation
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.