August 24, 2006
Lessons from Katrina to find worldwide uses
So much technical investigation has gone into the levee deficiencies in New Orleans after Hurricane Katrina that the findings fill almost 6,200 pages of an Interagency Performance Evaluation Task Force (IPET) report.
The American Society of Civil Engineers (ASCE) convened the External Review Panel (ERP) to review the results of the IPET report, and the findings will be released to the public Aug.25.
“The ERP has come across the points that are really important to the rebuilding of New Orleans, and much of it can apply to communities across the country in terms of how we protect against hurricanes,” said Joan Buhrman of the American Society of Civil Engineers.
The IPET report covers lessons learned, geodetic vertical and water level datum, documentations of the character of the hurricane protection system, forces experienced by protection structures during Katrina, providing input to repairs and ongoing design and planning efforts.
“One of the issues was why some of the levees failed,” said Buhrman.
The I-walls built on top of the levees were in question. In order to make the levee higher to prevent storm surges, the walls must be widened as well. The suggested replacement for the I-wall foundations were T-walls, which are inverted.
The total number of breaches along the Hurricane Protection System in New Orleans was 46.
“Had all the structures been built to design elevations, there would have been less overtopping,” summarized in an IPET report.
The same report noted that four breaches occurred before water levels reached design elevations because of I-wall foundation failures. In all of four cases, water flowed into the gap created in the waterside of the flood wall, weakening the soil, eventually leading to instability and failure.
|MOST POPULAR STORIES|
- Lafarge’s research tackles cement’s “bad boy” image
- Waterloo Region LRT work agreement almost done
- RFP released to shortlisted teams for Milton hospital expansion
- The Working Dead — construction of a post-apocalyptic zombie world
- Upset waters over new Ontario diving regulations
- 20 Most Popular Stories
|TODAY’S TOP CONSTRUCTION PROJECTS|
These projects have been selected from 371 projects with a total value of $1,936,826,394 that Reed Construction Data Building Reports reported on Thursday.
$134,000,000 Toronto ON Prebid
$128,250,000 North York ON Prebid
$100,000,000 Toronto ON Prebid
- Debate swirls over OCOT’s merit on its anniversary
- WaterGarden Worker
- Ontario to invest in cycling infrastructure
- U.S. construction labour concerns
- Compulsory certification in carpentry a “job killer”, says Kenney
- CaGBC to provide free LEED registration and certification for commercial projects in disaster-hit cities
- Economic cost of weather catastrophes is under appreciated: report
- Scotiabank sees slow growth in housing
- Photo Gallery: 2014 ACEC BC Awards of Excellence winners
- Journal of Commerce Preview for the week of April 21st, 2014
- Making Metro
- Crumbling roads a key election issue
- Early stages of concrete pump operator certification being developed in B.C.
- Legal battle over temporary foreign workers heats up
- Dive tower pushes formwork forward
- Understanding municipal strategy
- Calgary firm fined $35,000 for workplace injury
- B.C. labour minister calls for WorkSafeBC reforms
- B.C. prison proceeding