Kitchen waste pipe extension

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muilebon

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Residential project, all standard pipe sizes.
Need to re-locate kitchen sink 17 feet away from its original location.
Planning to use AAV instead of extending a vent pipe.
To the best of my knowledge the slope should be no less than 1/4" per foot.
Is there a limit on the max angle?
Any other considerations?
Please see the diagram below.
Thank you!

View attachment 49737
kitchen_plumb.png
 
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Terry

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At least 1/4" per foot, the kitchen should have 2" and a cleanout there. If it's an old home and you only have 1.5" there isn't much you can do about it though.
 

Reach4

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No max angle, but the AAV must be at least 2 pipe diameters after the p-trap. I understand it was just a sketch, but I thought I would mention it.
 

muilebon

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At least 1/4" per foot, the kitchen should have 2" and a cleanout there. If it's an old home and you only have 1.5" there isn't much you can do about it though.
Thank you - Terry!
Yes the house is old and the pipe is 1.5". But ideally, where would you put the cleanout, where the new pipe joins the old vertical waste to soil? Thanks again!
 

Terry

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Thank you - Terry!
Yes the house is old and the pipe is 1.5". But ideally, where would you put the cleanout, where the new pipe joins the old vertical waste to soil? Thanks again!

The cleanout should be at the sink and accessible.
My mother has a kitchen sink run in copper 1.5" that was plumbed in 1962 I believe if memory serves me. I change out the disposer every 8 years so that that it continues to work well. One Thanksgiving, I'm guessing with an old disposer, someone plugged it getting rid of potato peels. Thirty people for dinner and no kitchen sink.
 

muilebon

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The cleanout should be at the sink and accessible.
My mother has a kitchen sink run in copper 1.5" that was plumbed in 1962 I believe if memory serves me. I change out the disposer every 8 years so that that it continues to work well. One Thanksgiving, I'm guessing with an old disposer, someone plugged it getting rid of potato peels. Thirty people for dinner and no kitchen sink.
Thanks again, Terry!
 
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