Can you expand on what you mean by this?zhen said:I just wonder why they don't think about those underwater city project?
because no matter what the government do, another hurricane will still come, the place will be flood again... the best thing to do is to build underground or under water city...
http://en.wikipedia.org/wiki/Levee_..._in_New_Orleans_(following_hurricane_Katrina)About a dozen people, including engineers and contractors, made the allegations of poor workmanship in recent weeks to investigators probing the levee failures, said Raymond Seed, the head of a National Science Foundation team examining the levees.
Seed would not identify the tipsters and he cautioned that the allegations may ultimately have nothing to do with the levee disaster that led to hundreds of deaths. But he said that investigators are taking the tips seriously and intend to turn them over to federal officials.
"What makes us nervous is we're hearing multiple accounts," Seed said after testifying before the Senate Homeland Security Committee. The National Science Foundation, which gave Seed a grant to investigate the levees, is an independent federal agency charged with promoting science and the nation's welfare.
The complaints focus on two canals where levees topped with flood walls were built in stages over the past 15 years. One of the claims is that contractors used steel sheets - which were driven into the levees to prevent water seepage - that were shorter than what was called for in designs. If true, that could have made the levees weak and prone to failure.
Other tipsters complained that inferior materials, such as porous soil, were used to construct the levees.
Robert Bea, another University of California, Berkeley professor working with Seed, said in an interview that he talked on the phone with two women who said they had specific information from their late husbands on construction shortcuts taken on the levees. Seed said other investigators received similar complaints.
He wants the Army Corps of Engineers, which oversaw design and construction of the levees, to dig up portions of them to make sure they were built properly.
A preliminary report issued Wednesday by Seed's group and an American Society of Civil Engineers team said key levee failures on the canals near Lake Pontchartrain in New Orleans occurred because water oozed beneath the steel sheets and pushed aside the soft delta soil.
The levees were supposed to be able to withstand water heights seen in Hurricane Katrina, which hit Aug. 29. Investigators have not pinpointed whether designs were inadequate or the levees were built improperly.
Seed was joined by the heads of three other groups investigating the levee failures. The investigators raised questions about poor federal and local oversight of the levees, steadily decreasing budgets for the Army Corps of Engineers and decades of safety compromises.
Greenies had nothing to do with poor quality of the levees - they were most built before the environmental movement took off. Rather, corruption and greed on the part of some in government and some in the construction industry, and also the insufficient funding from the government (again due to politics)I fear the the worst but if the same greenies that shout "climate change" now also had prevented the levees from being upgraded in the past, to preserve nature, then we are sure that mankind is digging it's own grave.
I would agree with that.Furthermore I'm convinced that our "deltawerken" would have resisted Katrina with flying colors.