Hi
I have 1 1/2" drain in my basement which was built by the builder for bathroom vanity.

I'm going to add a kitchen behind bathroom wall and put its sink there. I did some research and realized that I can't have both on the same drainage line because one would be remained unvented,
I'm wondering if I go with the following system, it will work out?

P.s. all pipe will be 1 1/2"

[ibb.co]
[ibb.co]



Edited 1 times.

perfect

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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

Bern, Shouldn't the pipe under the San Tee be 2"?

Appreciate that.
And one question would be if I should use sanitary tee on my vent line or Vent tee?

yes - 2"

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"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638

get the horizontal portion of the green vent pipe up to 42 inches off the floor (minimum).

Bern's gummies are kicking in

I ran into an issue and even though I did most of plumbing, will have to relocate my vanity to the opposite side of bath.


Do you believe if I run my pipe like the following picture, it will work out( without a vent)
If not, can I tap into the vent I added on top?

Many thanks
[ibb.co]
[ibb.co]

will not work w/o a vent - too long if properly pitched forming an s trap


the vent line as you drew it needs to be MINIMUM 42" above floor

? shower in the way ?


you 'could' use a local AAV in the cabinet for the new vanity


gaaah gaassp choke

==============================================

"Measure Twice & Cut Once" - Retired U.A. Local 1 & 638



Edited 1 times.

FYI s-traps are still legal in Philadelphia Pennsylvania

your second picture will work fine
the vent connection can be up to 60 inch from the trap. so, maybe the vent connection can be on the shower side of the corner.
BTW, you have a shower valve and water piping on an outside wall in canada ????

It is in the basement, so risk of freezing, even on an outside wall, is minimal.Also the lines are pex.

I occasionally still come across shower valves on outside walls on upper floors. As long as the furnace keeps the house warm, the pipes won't freeze. On the other hand, if the furnace broke down and the heat was off for a day or two and it was realy cold outside (less than 0*F), then all bets are off.