February 6th, 2006
Tags: levees, floodwalls, engineering, army corps of engineers, 17th street canal, london avenue canal, universities, termites
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From this:
A termite expert is questioning whether tiny, voracious Formosan termites played a role in the failure of levee walls in New Orleans during Hurricane Katrina.
Louisiana State University entomologist Gregg Henderson said there are clear signs that the destructive insects were present, and he wants the opportunity to dig into the levees beneath the walls […]
December 30th, 2005
Tags: levees, floodwalls, engineering, army corps of engineers, 17th street canal, universities
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The Army Corps of Engineers did a design review of the New Orleans levees in 1990. Apparently the engineers on the project thought the soil under the 17th Street Canal was stronger than it was, and one of their offices discovered this at that time:
Corps documents show the mistake of overly optimistic levee strength was […]
December 22nd, 2005
Tags: national hurricane center, levees, floodwalls, engineering, army corps of engineers, universities, ivor van heerden, la gov
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Army Corps of Engineers spokesman Susan Jackson responded to the news that Katrina was apparently weaker than originally reported as follows:
"In the Gulf, Katrina was a Category 5 storm, and the surge was still Category 5 when it hit the ground… It's the surge — the pressure of water against those levee walls — that's […]
December 9th, 2005
Tags: levees, floodwalls, army corps of engineers, universities, 17th street canal
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From this:
When the New Orleans Sewerage and Water Board developed a plan in 1981 to improve street drainage by dredging the 17th Street canal to increase capacity for Pump Station No.ยค6, residents across the city applauded. Increasingly heavy rains were not only flooding streets, but pushing water into homes. Action was needed. It seemed […]
November 30th, 2005
Tags: levees, army corps of engineers, engineering, 17th street canal, floodwalls, universities
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"Team Louisiana", the state-sponsored "forensic levee investigation team" with "six LSU professors and three independent engineers" says the floodwall on the 17th street canal was bound to fail due to improper design that didn't take into account weak soils below the levee.
And, they say that bad design should have been obvious to those responsible: the […]
November 13th, 2005
Tags: levees, floodwalls, army corps of engineers, engineering, universities, lake pontchartrain
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From this:
Sheet piling supporting the failed floodwall on the 17th Street Canal extends just 10 feet below sea level, 7 feet shorter than the Corps of Engineers has maintained, a team of investigators said Wednesday [11/9], strengthening earlier findings that faulty design and construction played a role in the canal breaches that flooded much of […]
November 8th, 2005
Tags: looting, universities
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From this:
When she noticed the human waste on the floor of the trendy women's shoe boutique she manages, Lindsay Foret suspected looters had soiled the store out of spite.
"I was like, 'This is horrible. There's brand new bathrooms and they couldn't even go there?"' Foret said. "I went back to the bathrooms and they were […]
November 5th, 2005
Tags: levees, floodwalls, army corps of engineers, universities
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From Many decisions led to failed levees:
It was a simple solution that could have prevented one of the worst disasters in the nation's history: metal gates at the mouths of New Orleans' canals that closed automatically to block hurricane storm surges on Lake Pontchartrain.
But the gates were never built. Local officials objected to the Army […]
November 3rd, 2005
Tags: levees, floodwalls, nsf, universities
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Here's more on yesterday's Congressional testimony by Raymond Seed, who heads up a National Science Foundation team conducting a review of the levees and the floodwalls:
Several of the levees that flooded New Orleans may have been built with shoddy materials or by contractors who took shortcuts to save money, [Seed told Congress].
About a dozen people, […]
November 2nd, 2005
Tags: levees, floodwalls, army corps of engineers, universities, industrial canal
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From this:
Repairs to New Orleans' levees may be insufficient to protect residents moving back to the devastated city if another hurricane comes before the tropical storm season ends this month, expert engineers said Wednesday.
Dozens of breaches continue to mar the city's levee system, including a large seep at the Industrial Canal last week, according to […]