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Tuesday, January 25, 2011

Hurricane Damage: Katrina Storm Case Study

Malaysia is free from the natural disaster like hurricane. But for future study, the history can become a guide for the future building design. The application of wind tunnel contributre sighnificant contribution to the design. Katrina is one of the major storm event that sacirfies so much life and does more damage than any other hurricane events occurs in United States. Below is some of the information that relates to building defect caused by the Katrina storm event.

A structural engineer assessing a distinction of damages caused by high winds before the storm surge swept through the site. Pictures below shows some of the typical views along the areas with the most severe damage.








Typical views of devastation along the Mississippi coast caused by
Hurricane Katrina. Determining the extent of wind damages prior to the storm
surge sweeping through these sites



From the Katrina storm event, slow-rising flood waters from the storm surge reached a height of 30-inches above the first floor, causing extensive water damage to interior floor and wall coverings. 

High winds damaged the roof covering, caused wind-blown debris to penetrate the roof sheathing, and removed roof and wall sheathing panels from the windward gable end.

Wind-driven rain entered breaches in the roof covering and gable wall openings causing water damages to the ceilings and partial second story.



The forces from wind caused the majority of structural damages, while the surge caused extensive water damages to the interior.


The storm surge reached a height of about 10-feet for certain areas, and caused the destruction of the exterior wall which facing the beach.





Series of photographs that documented damages to the house around the victimised area. Note that minimal damage was present to the roof covering, while severe damages were on the lower part of the structure.

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