45 elbow in sewer line vent stack???

[MasterPlumbersKeymaster]

My current vent stack goes through the bathroom floor about two feet from the wall. i was wanting to install a 45 elbow vertically to move it closer to the wall and 45 up to the roof. i was wondering if this is up two code. it doesn’t seem that it would trap any sewer gas.see diagram below.
| up through roof
| 45 up
/ bend too wall
45 to wall |
| base of stack

[GuestParticipant]

put in 90′ if you like, as long as there is correct grade

[GuestParticipant]

thanks bungie1! one more quick question. did you mean by correct grade at 1/4″ per foot as on drainage.

[SylvanLMPParticipant]

I try to refrain from using 90 degree fittings in plumbing as much as possible.

The 90 degree maybe a place to collect debris that may fall down the vent stack like leaves etc.

The 45 offset would not allow build up as readily and gives for a more uniform flow of sewer gases (less restriction)

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SylvanLMP

[bungieParticipant]

One in sixty over here. Thats one inch every sixty, one metre every sixty metres etc etc

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DISCLAIMER

All advice is given with-out seeing the job, and hence all advice MUST be taken as advice with limited knowledge on the exact situation. NO responsibility can or will be taken. And yes, I am a licensed Plumber and Drainer with my own business in Brisbane Australia

[bungieParticipant]

One in sixty over here. Thats one inch every sixty, one metre every sixty metres etc etc

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DISCLAIMER

All advice is given with-out seeing the job, and hence all advice MUST be taken as advice with limited knowledge on the exact situation. NO responsibility can or will be taken. And yes, I am a licensed Plumber and Drainer with my own business in Brisbane Australia

[Author]

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