I am doing a basement (in-concrete bathroom) roughin.

Two questions please.

I am planning on using a 3x3x2 sanitary tee for the dry vent tap off of the drain pipe. (see pictures)

1) Is this (sanitary tee) the proper type of connection or is there something more suitable?

I have the sanitary tee at 2 different angles, 45 degrees and 90 degrees for the tap to the vent.
2) Is the 45 degree angle ok or do I need to do the complete vertical installation (90 degree)?
I am trying to save some height by going with the 45 degree angle.


I live in New York state and I believe we are IPC.

- thanks for any help/advice..... Ken

[postimg.cc]

UPDATED
Sorry for the incomplete picture.
I have attached a more complete picture of the system.
The vertical portions of the 3 vents are incomplete.

[i.postimg.cc]

"srloren": Yes, the tee is at a 45 degree angle so it can vent rather than get filled with liquid. That was my original question but all comments welcomed.

- thanks again, Ken



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Your 45 degree angle would be code in San Diego, CA. I would think it would be acceptable in your area.

srloren

I don't see any difference between them, functionally. But, what are you trying to accomplish. I cannot see any reason for a "dry vent" at that location, and if it is a vent from the basement, you cannot connect it to the drain line at that location.

Placing the combi/santee on a 45 makes the vent above the drain line causing it to vent. If I understood your question...

srloren

BUT, WHY is the "vent" there in the first place? If it is a "dry vent" then it has NO FUNCTION at that location. Unless it is a vent from some other fixture being tied back into the drain line, which CANNOT be done.



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.....SHOULD NOT be done.....

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

"HJ" - I very much appreciate your comment but I am not quite understanding it.

>> BUT, WHY is the "vent" there in the first place?
>> If it is a "dry vent" then it has NO FUNCTION at that location.
Response: Yes, That was my intent.
>> Unless it is a vent from some other fixture being tied back into the drain line, which CANNOT be done.
Response: No, it is not a vent from some other fixture.

My intent was for it to be a dry vent for the toilet.
When you say "It has no function", are you saying:
1) It would not serve as a vent for the toilet
OR
2) It is not needed because the other vents would suffice.
OR
3) something else

Please excuse my lack of understanding.

thanks, Ken



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the vent should be on the toilet line itself, NOT after (downstream of) the "Y"

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

Should not, implies that is is okey if he does it, but not recommenced. Cannot means don't do it, regardless.

flammable means the same as inflammable


in code talk 'may not' = 'should not'


can not means incapable




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

1) Would this version be more suitable?
It places the 3" drain pipe directly under the 2x6 wall so the vents are vertical.
2) Is the toilet vent doing anything or should it be eliminated?
3) Or should the toilet vent be in-between the toilet and the toilet wye?

- thanks, Ken

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in between the toilet and the toilet 'Y'

then 'good to go'

(assuming the distances and fittings are correct)

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

#1. to vent the toilet it would have to be between the toilet and connection to the main line.

bernabeu, hj - You guys have been a tremendous help, thank you!

Would it be acceptable to remove the "toilet vent" that I had in the picture?
That would still leave the vent right after the shower as well as the vent from the sink.


Sorry, but a follow-on question please.
The sewage sump will be sealed and vented (2".
For the sump vent, I was planning on combining it with the vents (sink and shower) shown in my picture. They will be joined well above the flood level rim.
Does that sound acceptable?

By the way, that 2" vent will run in a new 2" pvc up to the attic where it will combine with an existing 2" vent which then exits the roof.
Is this acceptable?


- thanks, Ken

yes, remove the 'sewer vent' downstream of the 'Y' as it is unnecessary and serves no purpose

your methodology of venting the "sewage ejector pit" (correct terminology) is proper

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

Thank you, again!



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