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Thread: toilet wet vent in Canada

  1. #1
    DIY Member christoff's Avatar
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    Default toilet wet vent in Canada

    i was wondering if you can run shower and tub drains to the 2" lav wet vent to the toilet?
    i don't know if the code is different in ontario. do the shower and tub have to have their own drain connection to the 3" toilet pipe.
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    One who lurks Basement_Lurker's Avatar
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    That is not a proper wet vent design.
    Broken promises don't upset me. I just think, why did they believe me? -Jack Handy


    www.blackbirdkitchenandbath.com

  3. #3
    DIY Member christoff's Avatar
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    what would be the proper way?

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    Moderator & Master Plumber hj's Avatar
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    The lav is a proper wet vent, but the tub and shower having "flat" vents are not proper.

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    Journeyman & Gas Fitter Doherty Plumbing's Avatar
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    Quote Originally Posted by christoff View Post
    i was wondering if you can run shower and tub drains to the 2" lav wet vent to the toilet?
    i don't know if the code is different in ontario. do the shower and tub have to have their own drain connection to the 3" toilet pipe.
    You could simply just wet vent all 3 fixtures downstream of the lav by making the lav drain 2" all the way up to the shower connection which would need to be a 3x2" wye so that downstream of the shower is a 3" wet vent.

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    DIY Member christoff's Avatar
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    does this make the grade?
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    In the Trades Wally Hays's Avatar
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    Nothing there will meet code. I wish I had the capability to draw it out for you but at this point I don't think you understand DWV well enough to be able to design the thing by yourself. Besides proper venting, proper slope, distance and use of fittings all comes into play not to mention how everything changes once the framing is in place. You need a professional to do this before it winds up costing you twice what it should.
    Perception is 3/4 of reality

  8. #8
    DIY Member christoff's Avatar
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    anyone else?
    btw 3 piece wet vent.
    Last edited by christoff; 06-29-2010 at 03:36 PM. Reason: more info

  9. #9
    In the Trades Wally Hays's Avatar
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    What is a 3 piece wet vent?
    Perception is 3/4 of reality

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    Journeyman & Gas Fitter Doherty Plumbing's Avatar
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    Quote Originally Posted by Wally Hays View Post
    Nothing there will meet code.
    Not true at all.




    The green circle is your a-typical wet vent of a bathroom group. There is nothing wrong there at all.

    The area circled in red is a concern because that appears to be a 1.5" flat dry vent. If it is you can't have a vent run flat like that until it is at an elevation of 6" above the flood level rim of the highest fixture it serves.

    The area circled in blue is a floor drain I am assuming. If it is this is also perfectly ok and hopefully it's a 3" floor drain so you can classify it as an emergency floor drain.

  11. #11
    DIY Member christoff's Avatar
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    the red area is a flat vent for about a foot and then straight up the wall to above the flood rim level, but i will use a t wye at 45 degrees and i think it will be acceptable am i correct mr. doherty
    and yes a 3" floor drain, and thanks for chiming in.

  12. #12
    Journeyman & Gas Fitter Doherty Plumbing's Avatar
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    Quote Originally Posted by christoff View Post
    the red area is a flat vent for about a foot and then straight up the wall to above the flood rim level, but i will use a t wye at 45 degrees and i think it will be acceptable am i correct mr. doherty
    and yes a 3" floor drain, and thanks for chiming in.
    As long as you come off the drain line with the vent at a nominally horizontal angle (or better you are ok). That is to say that you need to bring the vent off atleast at 45*.

    Last edited by Doherty Plumbing; 06-29-2010 at 08:10 PM.

  13. #13
    In the Trades Wally Hays's Avatar
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    No the red area is not to code because the lav dumps into the tub drain then into the toilet line. The wet vent can not come off a branch of the main drain line.
    Perception is 3/4 of reality

  14. #14
    Journeyman & Gas Fitter Doherty Plumbing's Avatar
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    Quote Originally Posted by Wally Hays View Post
    No the red area is not to code because the lav dumps into the tub drain then into the toilet line. The wet vent can not come off a branch of the main drain line.
    Huh? As long as the laundry has it's own vent (which is must or else it's s-trapped) the red area is perfectly ok if the vent for the tub comes off at a nominally vertical angle.

    As for the bathroom group wet vent there is nothing wrong with what's he's drawn up.

  15. #15
    In the Trades Wally Hays's Avatar
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    Not by the 09 IPC it ain't. You can not have the wet vent running off a branch from the main line. In that particular drawing there is no vent for the tub if the lav is draining
    Perception is 3/4 of reality

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