3" Building Vent Stack Without Roof penetration

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alwynallan

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I'm building a garage/shop/apartment in Maine (UPC) with a desire to avoid the traditional vent stack, both for practical and aesthetic reasons. The building is a prototype for two future houses on the property where the aesthetics will be more important. I'm already required to get a variance for no floor slope, so I'm considering asking for this too. The proposed vent is highlighted in yellow. The idea is that it will be balanced so that any pressure difference from wind will cause a flow in that direction and carry any odors up and away from the building. There will be expansion joints on the three long runs. Both pipes along the eaves have >1/8" per foot of slope.

Screenshot 2024-02-23 110604.png


The pipe expands to 4" just before exiting, and is capped with a grate flush with a metal fascia trim.

Screenshot 2024-02-23 111956.png


Any reason this won't work, if I can get it inspected? Any similar configuration in use?
 

Jeff H Young

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why would anyone put a vent out the roof if this was ok? will it work ? I think you might smell it and no reason to belive its better or as good as meeting code (the minimum standard). as far as cosmeticaly will it work ? look better ? maybey
 

Jeff H Young

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why would anyone put a vent out the roof if this was ok? will it work ? I think you might smell it and no reason to belive its better or as good as meeting code (the minimum standard). as far as cosmeticaly will it work ? look better ?
I meant why wouldnt everyone vent this way if it works fine and meets code
 
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