Attic Vent System up to code?

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Chadslost

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Greetings,

I’m pretty sure this vent system is to code but, I’m a rookie and still learning ALOT so I figured I’d throw it out there and see if anyone sees something wrong?

- It’s for 2 bathroom sinks, 2 toilets, 1 shower, 1 washing machine and a 1 kitchen sink.
- All the branches are sloped down at 1/4” per foot
- All vents connect above the flood plain for the highest fixture
- Both branches are 2” joining the 3” to exit the roof

I appreciate any feedback!
 

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John Gayewski

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Looks fine to me. Generally the fittings would orientate so that condensation would drain back to the fixture served. But with venting it's not really that big of a deal. Looks like the combo is the only thing that doesn't fulfill that standard, but I wouldn't change it.
 

Breplum

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Plastic piping should never have metal strap in contact, and should be rigidly clamped so as to prevent movement in all directions. When using rigid metal straps, use 10 mil tape or similar to isolate. loose plumbers tape is not allowed.
 

Jeff H Young

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The 3x3x2 combi rolling up funtions fine and is totaly legal IPC . UPC might not meet code but in practice I see no issue at all being from a UPC background it was drilled into my head not to vent that way but I cant see issue
 

Chadslost

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Plastic piping should never have metal strap in contact, and should be rigidly clamped so as to prevent movement in all directions. When using rigid metal straps, use 10 mil tape or similar to isolate. loose plumbers tape is not allowed.
I appreciate the tips! I’ll make the adjustment.
 

Chadslost

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The 3x3x2 combi rolling up funtions fine and is totaly legal IPC . UPC might not meet code but in practice I see no issue at all being from a UPC background it was drilled into my head not to vent that way but I cant see issue
Thanks you for the thoughts! It’s UPC in Missouri but my permit with the county states plumbing will be checked with applicable sections of the 2006 IRC here so maybe I’ll make an adjustment to the combo. I was just trying to prevent putting a second hole in the roof.
 

Chadslost

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Looks fine to me. Generally the fittings would orientate so that condensation would drain back to the fixture served. But with venting it's not really that big of a deal. Looks like the combo is the only thing that doesn't fulfill that standard, but I wouldn't change it.
I appreciate the reply!
 
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