Shower Venting after Demo of Old Bathroom

[Gtrianta]

Hi all,

Looking for some more advice from this forum...was on another also but still not 100% clear.

Working on a shower. I've attached pics to what was old steel pipe now removed, other than where there is a wye by the cast iron stack. That would involve opening holes in two ceiling rooms so will opt to just use a 2" thread PVC transition at the wye.

So the question is in the picture at the old shower drain there was a tee laid on its side that was use to go over about 10" used as the vent and then elbow up 90 and do into the attic and pic up the vent.

Can it still be vented in this manner?

I've also attached more pics of the plumbing

Uploaded more pics...One is the old piping route and that wild cast iron 4" pipe in the corner. That old cats iron 4" had a wye coming off it and then did a 90 to the shower drain. The other side had a 45 that went behind the floor joist to the sink drain. Thats part of the problem that I have that joint in the way.

The bathroom shower used to be a tiny 30x30 and a 30x30 little closet thats how the got the old vent up but I tore that out to make a bigger shower.

 

[Gtrianta]

Hi moderators can this thread be moved to the main page?

 

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[John Gayewski]

I'm not sure what the question is. Your shower can't be vented how you show it with pvc unless you have a sink tied into it. This will clean the horizontal vent under the floor. You also can't use a "tee" for the shower drain. It needs to be a wye connection at the intersection of the vent and drain.

 

[Gtrianta]

I'm not sure what the question is. Your shower can't be vented how you show it with pvc unless you have a sink tied into it. This will clean the horizontal vent under the floor. You also can't use a "tee" for the shower drain. It needs to be a wye connection at the intersection of the vent and drain.

Hi John!! And thank you for your reply.

Slide 1 pic shows the old galvanized piping for reference. In the old bath the shower was 30"x30" and to the right was a 30"x30" closet type deal.Just before the old shower drain in that pic they had a 2" sani-tee on it's side with about 8-12" of 2" pipe that then 90'd up the closet wall. Now the that closet got torn down to open up the shower area to a 38X60 new shower.

That old galv. shower pipe went into a wye at the 4" cast iron stack. In "old piping 2" pic you can see the wye. Well the other part of that wye goes behind the joint and then 90's back through the top of the joist to pic up that sink. So the shower piping is in front of the joist and the sink piping was behind the joist. As luck would have it a double joist is right under that back wall...probably why they originally piped it the way the did.

"Shower 1" pic is what i thought I could do...same routing off all piping but wye off the PVC in the pic before the shower trap. extend the 2" pipe at the wye and go up the side wall with a 2" vent. Seems I cant have that wye on the flat.

 

[John Gayewski]

Hi John!! And thank you for your reply.

Slide 1 pic shows the old galvanized piping for reference. In the old bath the shower was 30"x30" and to the right was a 30"x30" closet type deal.Just before the old shower drain in that pic they had a 2" sani-tee on it's side with about 8-12" of 2" pipe that then 90'd up the closet wall. Now the that closet got torn down to open up the shower area to a 38X60 new shower.

That old galv. shower pipe went into a wye at the 4" cast iron stack. In "old piping 2" pic you can see the wye. Well the other part of that wye goes behind the joint and then 90's back through the top of the joist to pic up that sink. So the shower piping is in front of the joist and the sink piping was behind the joist. As luck would have it a double joist is right under that back wall...probably why they originally piped it the way the did.

"Shower 1" pic is what i thought I could do...same routing off all piping but wye off the PVC in the pic before the shower trap. extend the 2" pipe at the wye and go up the side wall with a 2" vent. Seems I cant have that wye on the flat.

You can have the wye "on the flat" if you route it up through the floor and tee over (inside of the wall) and drain the lav into it,while continuing straight up for a vent. That vent would be sufficient to vent the toilet, shower, and lav all at the same time if it's 2"in size.