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L Shaped Hip Roof Open Structure

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FluidDynamic

Structural
Aug 15, 2022
1
I haven't been able to find any provisions within ASCE for L-shaped Hip roof open structures. For rectangular hip roofs, I only see options for inverted, pitched, or gable roof. Can I just assume the roof is rectangular and a gable roof for analysis? Wouldn't this just be over designed? Any help with this would be greatly appreciated.
 
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Most structures are not simple boxes and, therefore, require some judgment to apply the wind load provisions skillfully. In general, this is what I recommend:

1) Treat the projections of the building as almost new buildings if you feel that the projections are significant enough to produce new wall end zones etc.

2) For each section of faux building, choose the roof shapes that best matches yours aerodynamically.

3) If you deem it appropriate, consider some conservatism in whether or not the size of your end zones should correspond to the smaller, faux buildings or the larger, overall structure.

I know, that's a bit vague. Unfortunately, it's very difficult to apply judgment to these situations without a fundamental understanding of how a bluff body behaves aerodynamically. In the past, I've found books like the one shown below to be a great help in this regard.

C01_oi6wyt.png
 
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