Hillwilliam -> RE: Solar Energy (11/13/2012 7:55:46 PM)
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quote:
ORIGINAL: Kirata quote:
ORIGINAL: Hillwilliam "Even dams are typically designed to last only about 50 years." HUH? The Dam closes to my house was built in 1912. Concrete structures typically gain strength for the first century. Dams can last for centuries, but not without expensive maintenance. The average age of America’s 80,000 dams is 51 years. More than 2,000 dams near population centers are in need of repair, according to statistics released this month by the Association of State Dam Safety Officials. Last year, 140 dams were fixed, but inspectors discovered 368 more that need help. That’s why the American Society of Civil Engineers gave our dams a grade of "D" in its 2009 report on the nation’s infrastructure. There are just too many aging dams and too few safety inspectors... The Association of State Dam Safety Officials estimate that $16 billion would be needed to fix all high-hazard dams... the number of high-hazard dams has increased from less than 9,000 in 2001 to more than 10,000 now. Link Note: that "now" was in 2009. K. That sounds more like it. When I saw the "Even dams are typically designed to last only about 50 years.", the first thought that went thru my head was "What the FUCK does the author know?" They didnt say 50 years without maint, they just said 50 years. That's basically saying after 50 years, it's toast.
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