Feed on
Posts
Comments
[, , , , , ]

38676501 A8A737Bf4DThe LA Times today published a lengthy report on the preliminary National Science Foundation findings on the levee failures in New Orleans following Hurricane Katrina.

The article gives details on the construction of the levees, their lack of maintenance, and their underdesign. Despite all of these warning signs of massive and perhaps criminal incompetence, the very organization that constructed the levees is investigating their failure. The failure of New Orleans’ levee system is the single most expensive engineering design failure both in terms of material losses and loss of life in the history of our nation. Congress and the President demanded independent investigations into the losses of NASA’s Challenger and Columbia orbiters, and should absolutely do the same in this case. Thorough investigation and understanding of engineering failures is crucial to protecting others who rely on similar systems nationwide.
Continue Reading »

[, , ]


2074465, originally uploaded by John Hay.

This picture shows a levee breached in the northern section of the city, adjacent to one of its navigation canals. Water is streaming into the city because it is, on average, below sea level. New Orleans is below sea level because it was built on the Mississippi Delta that is constantly sinking (subsiding) into the sea. The annual floods replenish those delta lands, but damage the city itself, so we built levees to keep them out. Those levees prevent any new mud and silt from building up New Orleans, so, short of jacking up the buildings a bit each year, New Orleans WILL eventually sink lower than any engineering marvel could save it.
Continue Reading »