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Obatining Ductility Ratio of a Blast Door

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knandwana

Structural
Joined
Sep 25, 2009
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29
Location
US
Hi All :

While designing a blast door, I am having trouble obtaining ductility ratio (Xm/Xe) for a given T/Tn and P/ru using Figure 3.64a of TM5-1300 Manual. First the graph does not have a good print and

Secondly, the value of T/Tn for my case is 0.066 and
P/ru is 24.5, from the figure 3.64a it looks like the value of Xm/Xe (ductility ratio) will be less then the min. shown on chart (0.5). How should I find that value ?

Is there an easier approach to find out the ductility ratio of a blast door ?

 
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