Proposed Bathroom plumbing layout

[John Gayewski]

I just skimmed this post, but stacking santees creates a vertical wet vent. Which means (depending on your specific code) you'd need to upsize everything from the vertical wet vent on down to three inch. Unless the tub is on top which it looks to be in these drawings. Just beware for stacked tees the tub needs to stay on top generally. Canadian code being based on hydraulic load which gets converted to units adds some complication to figuring this out.

 

[Joseph]

Thanks John, Looks like I have room between the Joists so I drew up this other configuration. Here I show the Tub drain connected to the wet vent from the Sink using a Y fitting. With a trap arm length less than 6' I'm able to maintain grade using 1.5" pipe. Also, wondering if it matters much that the W/C drain connection to the SOW stack is not the lowest point ? If I'm able to swap it around to the lowest point would it make things easier or better ? Just thinking now that perhaps it would be worth the effort to just vent the shower individually and connect the vent to the vent branch in the attic (shown is second figure ).. BTW sorry for all the different version drawings but for me this really helps convey what I'm thinking since I don't know terminology that well.

 

[Sponsor]

 

[Joseph]

I'm thinking this could be the final version !!?? The Y fitting on the SOW would just remain there with a cap. A bit more work with the individual shower drain to the attic but it does simply and reduce work in other areas I think. Really appreciate all your feedback so far as a newbie to plumbing !

 

[John Gayewski]

I'm thinking this could be the final version !!?? The Y fitting on the SOW would just remain there with a cap. A bit more work with the individual shower drain to the attic but it does simply and reduce work in other areas I think. Really appreciate all your feedback so far as a newbie to plumbing !

Looks good to me

 

[Joseph]

I'm thinking this could be the final version !!?? The Y fitting on the SOW would just remain there with a cap. A bit more work with the individual shower drain to the attic but it does simply and reduce work in other areas I think. Really appreciate all your feedback so far as a newbie to plumbing !

Thank you for all the help Jeff !