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Wind Load on an Open Structure with Roof Slope Greater than 45 Degrees

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Stenbrook

Structural
Dec 5, 2014
125
I have an open structure (gable roof) with slope of 53 degrees. Per ASCE 7-05 table 6-18B, it only provides pressures for the roof up to 45 degrees. What pressure would you use for slopes greater than 45? I would consider using wall pressures, except for an open structure ASCE does not define any wall pressures so I am curious what others would do. Should I treat the roof like a sign?
 
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I might use the ASCE 7 wind loads on signs

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I am of the curious type eventho. I do not deal with your reference. Plot pressure vs. angle, do a regression analysis which Excel has, and compare pressure at desired angle to a flat plat to which the wind pressure is normal.
 
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