Move Kitchen Island vent and drain approx 12"

[econjon]

I had my plumber rough in the DWV and H2O supply. I now realize it's in the wrong place by about 10-12".

I know I cannot have horizontal runs in the island DWV loop (at least not below cabinets). Can I 45 the stacks toward where I need them and then 45 back up for the vent loop?

Picture attached

 

[Terry]

45's on the vertical are fine.
Looks like a nice job on the Island vent.

 

[Sponsor]

 

[econjon]

45's on the vertical are fine.
Looks like a nice job on the Island vent.

Thanks for the quick reply Terry!

I just realized that the as I 45 the stack away, the drain outlet height will necessarily increase. By my math moving it over 9" puts bottom of clean-out/drain fittings at 14" off finished floor. Could I swap positions of clean-out with drain to get back some height? Probably not legal. Or is there a clever way to solve this?

 

[econjon]

Just a thought. Can I run the drain line laterally after it comes out of floor (with 1/4"/ft) using long 90's and use the 45's on the vent side?

Pic of idea attached

 

[Reach4]

Just a thought. Can I run the drain line laterally after it comes out of floor (with 1/4"/ft) using long 90's and use the 45's on the vent side?

Yes on the the 90s, and only the left-hand one needs to be long. The one that feeds into the floor could be long or medium.

Yes on having two 45s above the santee, which bring the AAV back to within 15 degrees of straight up.

 

[econjon]

Thanks.

Going for broke. Is it legal to run the 1 1/2" vent pipe laterally on the floor as well using 90's instead of 45's for the 9" run?

 

[Reach4]

Going for broke. Is it legal to run the 1 1/2" vent pipe laterally on the floor as well using 90's instead of 45's for the 9" run?

You mean horizontally along the floor? No, a vent pipe can not be horizontal on the story it serves below 6 inches below the flood level of the sink or whatever the venting is for.

You may mean something else.

 

[econjon]

That was the question! Thanks! I'll make it work with the 45's. Just have to cut out a bit of back side of sink cabinet. At present the aav is in the middle of the cabinet where the sink is supposed to go! But there's dead space 9" back in the middle of the island. That's where I'm trying to get the AAV into.

 

[hj]

Use 60 degree ells to offset it back. They will not raise it as much as 45s will.

 

[Reach4]

That was the question! Thanks! I'll make it work with the 45's. Just have to cut out a bit of back side of sink cabinet. At present the aav is in the middle of the cabinet where the sink is supposed to go! But there's dead space 9" back in the middle of the island. That's where I'm trying to get the AAV into.

How about a photo or sketch -- side view approximately.

 

[econjon]

The 60's were a good trick. All done. Thanks for all the good advice.