Interior Wind Loads

[Deadblow]

Please refer to this closed thread: thread507-278845

Does anyone have any references that agree with BARetired's statement about designing an interior wall to the full exterior wall pressures if the bays on each side of the wall are partially enclosed?


EIT

 

[r13]

See Fig 2, and text under the title "Effect of Openings on Internal Pressure Coefficients" of the linked file. I believe it supports BA's statement. Link

 

[RPMG]

I don't think it can be justified to use a lesser wind pressure:

 

[Deadblow]

Ok, thank you both for the quick responses! RPMG, thanks for the simple sketch. That makes it look so simple and, in my opinion, is hard to argue with.

EIT

 

[Ron]

ASCE 7 accommodates this with a factor for enclosed (0.18) or partially enclosed (0.56). If the building meets the criteria for an "open" structure, I would agree that the partition takes all the load, windward and leeward.

Keep in mind that in the sketch provided the windward and leeward pressures are additive; therefore, the partition load is high.

 

[r13]

the windward and leeward pressures are additive; therefore, the partition load is high.

True. This is the dilemma a designer faces when there is no available method to justify the use of a lower pressure, though we know, that the size, location of the windward opening, the location, geometry of the interior wall, and similarly the size and location of the leeward wall, all matters. But intuitively, we know the code specified wind load for partitions inside of enclosed buildings is not adequate.