Kitchen Drain Pipe Rerouting

[stevezo]

We are planning a kitchen renovation (living in Ontario, Canada) and been trying to figure out what to do with our kitchen drain pipe. The pipe goes horizontally across multiple cabinets into one of the side walls. This is very frustrating as it reduces most of the usable space. Since we are replacing the cabinets and adding a dishwasher, we thought this would be the time.

https://imgur.com/uL4P63c
https://imgur.com/1NrZ8xr

Would it be possible to install the p-trap towards the wall, and to have two 45 degree pieces allowing the piping to closely follow the wall to increase the space?

The other option is to go straight through the floor into the basement. We have drop ceiling there so it may be possible. However this is not ideal as we would be bypassing the venting that is installed in the side of the wall and so this would have to be properly vented.

Thanks very much!

 

[frodo]

hard to tel
..l by the picture but i think you want to change

if so..yes go for it

 

[stevezo]

Thank you very much, Frodo.

This is the top view of the setup, so just a bit different than your schematic drawing:


Would this be a possibility?

 

[aas06]

Hey Stevezo.
im a plumber here in BC and based of national code theres no problems with what you've drawn up for plans. just cant have more that 180 deg of change but 2x 45s is well within that so you should be just fine. just make sure to have it graded properly if you're not going to have a plumber in to do so.

you may also need a 3rd 45 depending on the direction of which that tee is facing where it would originally entered your cabinet

 

[stevezo]

Hey Stevezo.
im a plumber here in BC and based of national code theres no problems with what you've drawn up for plans. just cant have more that 180 deg of change but 2x 45s is well within that so you should be just fine. just make sure to have it graded properly if you're not going to have a plumber in to do so.

you may also need a 3rd 45 depending on the direction of which that tee is facing where it would originally entered your cabinet

Thank you so much, aas06. This is really helpful. I will double check the tee direction to make sure and add the 45 extra if needed. Will also take into account the grade requirements.

Just to clarify with you, do you think it is best to not place the piping through studs and just push them as far back as possible (to gain space)?
Secondly, someone mentioned that the length of pipe shown might not be up to code. This was surprising to me as it was just about 60" or so

 

[aas06]

I don't have my book with me but I think you'll be fine at 60. studs you'll have to be careful with, watch for notching load bearing ones - I don't recommend it- and also even normal ones a hole saw is preffered to a notch - better structural integrity. I don't think you'll be able to just pushback and keep it out of the cabinets. but depending how far out they are in your cabinet at the moment, you may be able to get more space doing that, but youll still need a small amount of space for the pipe off the wall for working area. (1/2" to 3/4" should be good)

 

[stevezo]

I don't have my book with me but I think you'll be fine at 60. studs you'll have to be careful with, watch for notching load bearing ones - I don't recommend it- and also even normal ones a hole saw is preffered to a notch - better structural integrity. I don't think you'll be able to just pushback and keep it out of the cabinets. but depending how far out they are in your cabinet at the moment, you may be able to get more space doing that, but youll still need a small amount of space for the pipe off the wall for working area. (1/2" to 3/4" should be good)

Thank you so much again. You've been so helpful! Based on this, we will just opt to keep them in the cabinet but as far back as possible to maximize space, for peace of mind. The hassle of going through studs doesn't seem worth it

 

[frodo]

use 2 hole straps to attach it