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Garden Style Open Breezeway C&C Loading

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GA_Engineer1985

Structural
Feb 8, 2023
3
Does anyone know of any literature that discusses what the acceptable Wind C&C pressures are required in open breezeways in a garden style apartment?
To paint a clearer picture it's a rectangular structure, with an open breezeway running long ways down the length of the building, and i'm trying to research the C&C wall pressure to be used on those breezeway walls. The breezeways are typically 7ft - 12ft wide.

I could see the case for any of the following:
Negative Zone 4/5 Wall Pressure (I feel this is excessive but would accept the argument for zone 4)
Positive Zone 4/5 Wall Pressure (Seems more appropriate than the Negative Pressures as there wouldn't be enough room to develop suction in the corridor to meet Negative Zone 4/5 Pressures)
MWFRS Side Wall pressures (What I'm hoping to find literature on)

Keep in mind i'm not talking about the minimum 16 psf per ASCE 7, but i just can't find anything and would like something to be able to reference.
 
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GA_Engineer1985 said:
To paint a clearer picture...

You'll need to actually paint a picture. Or post a rendering/elevation. To me a breezeway would connect two buildings and doesn't have any walls so I have no clue what you're talking about.
 
I think, and obviously assuming here, he's essentially talking about the corridor being open air on each end of the building but the roof being all one giant roof.
 
Rectangular Structure, one building, open corridor down the center long ways.

Imagine a typical 3 story apartment complex where the corridors are open to air.

I can try to get a sketch on tomorrow, but I think I attached a picture similar to what I'm referring to, except it's turned 90 degrees and what I'm referring to is open to air as opposed to sectioned like in this plan.
 
 https://files.engineering.com/getfile.aspx?folder=36f9b496-55d5-4fef-962b-9875df58f9a7&file=83117DC_F1_1539117640.gif
Ahhh...got it. I'm familiar with those. Lived in one, once.

No references, I'm afraid. But I do have some thoughts.

I would say wind perpendicular to the breezeway results in minimal pressure on the walls. Parallel... I'd treat it as a normal sidewall for simplicity. Where things can get interesting is a quartering wind. You'll have .707xp(windward) on two orthogonal faces, but you can also get positive pressure inside the corridor based on its width.

This all assumes the are structurally dependent. If designed as independent, I'd say you need to ignore the other half and design it as a regular exterior wall with no consideration of shielding.
 
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