Enclosure classification is by direction, right? Windward openings over balance of openings. Dead-on, I’d call that partially open or perhaps partially enclosed. Not sure I’ve ever thought about a three-sided building before.
Ok final answer: partially enclosed, apply (+) internal pressure and (-) external pressure simultaneously to leeward wall. Sorry for the panicked responses!
ANE91: Ok final answer: partially enclosed, apply (+) internal pressure and (-) external pressure simultaneously to leeward wall. Sorry for the panicked responses!
That's what I was thinking too. If you look at the wind flow path, I would think it would push on that windward side of that wall and definitely create a negative pressure that pulls on it of the leeward side.
And, it' is surprising how little protection partially enclosed structures get from being partially enclosed.