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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