A Jan. 22 article in the San Antonio Business Journal headlined “Risk of LEED Decertification Looms Large for Real Estate” contains “several inaccuracies, causing unnecessary anxiety in the marketplace,” says Ashley Katz, a spokeswoman for the U.S. Green Building Council. The Washington, D.C.-based group developed LEED, a popular green-building rating system. Bradley S. Carson’s article is based on a challenge, filed to USGBC last year, to the LEED-New Construction Gold certification awarded in 2007 to Northland Pines High School in Eagle River, Wis. The article said the school could be subject to decertification as a result of LEED 2009 provisions
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.