Safety Assessment Program Evaluator Student Manual

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CA Emergency Mgmt. Agency Safety Assessment Program Evaluator Manual April 2011In Figure 2-14 (below), the house floated in the floodwaters of Hurricane Katrina off itsfoundation and settled unceremoniously into its present position. Note the stairs in thefoundation wall in the foreground; there is no corresponding door on the house in the wall closestto the stairs. This house actually does not belong to the foundation it is resting on, but floatedthere from another place! The house was not attached to its foundation, which is common insome parts of the country.Figure 2-15 (page 41) shows how scouring causes damage. Floodwaters managed to work theirway under the sidewalk, which ended up unsupported and thereby failed. If this had been abuilding, the structure would be seriously compromised.Figure 2-16 shows a steel frame building that suffered damage from storm surge in HurricaneKatrina. The lower story is completely stripped of all non-structural features, and some of thesecond story has suffered the same fate.In Figure 2-17 (page 42), the lower parapet was blown off by hurricane-force winds. The tallerparapet with the mall signage was braced from behind with steel bracing; if the lower parapethad been braced as well, it would likely have withstood the damaging winds.Photo courtesy Raymond Lui, SEAFigure 2-14 – Wood frame home floated off its foundation, 2005 Hurricane Katrina40
CA Emergency Mgmt. Agency Safety Assessment Program Evaluator Manual April 2011Photo courtesy Raymond Lui, SEAFigure 2-15 – Scouring under sidewalk, 2005 Hurricane KatrinaPhoto courtesy Raymond Lui, SEAFigure 2-16 – Storm surge damage to steel frame building, 2005 Hurricane Katrina41
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Safety Assessment Program Evaluator Student Manual

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