eBull
New Member
Hi, first post here.
I've learned a ton over the years perusing this forum, always impressed by the level of knowledge and the generosity and professionalism with which it is shared. Haven't visited in a few years and was saddened to hear of Terry's passing. Kudos to those who are keeping the forum going. Just wanted to say that first.
So - I'm planning a new bathroom on the 2nd floor of a former church converted into a residence and studio. I've attached some drawings and pictures. The bathroom consists of a toilet, sink and shower. I'm also adding a slop sink for cleaning paint brushes, etc. as the new bathroom is in the studio space. Below the planned bathroom is a 1/2 bath and the kitchen sink plumbing is on the other side of that bathroom wall. There's a 3" vent stack that extends through the roof in the wall between the 1st floor bathroom and kitchen - I'm hoping to tie the new 2nd floor drain lines into that stack and run new vents from the lower fixture drains up the chase and tie in to the new vents. The upper drain lines are all fairly short runs (3 or 4 feet). I'm in Massachusetts so under the UPC I believe.
Aside from the standard "does my overall plan look okay?" I have a few specific questions:
- Can the shower be vented by the lav as I have it drawn? Looks similar to some of the examples in the section on wet venting (248 CMR 10.16(5) ) of a wet vent extension of a horizontal drain line.
- I'm assuming I can't get away with the venting of the toilet and slop sink (it would be convenient framing-wise) . . . but that the same wet vent exception would apply if the 2" drain entered the 3" line downstream of the toilet. Assuming also that the vent would need to be 2" all the way back to the stack.
- The current kitchen sink vent seems wrong . . . it kinda zigs and zags it's way back the stack with a decent amount of horizontal run below the flood-level rim of the sink. I may need to add a chase anyway but I'd have it take off at 45º before running up past the upper drain lines, unless I could use a bow vent?
- The downstairs 1/2 bath lav is wet vented into the stack . . . haven't quite decided how to remedy that but also wondering if I could use the old urinal drain for the lav instead? It might make a little room for other stuff around the stack.
Many thanks for the help!
Eben
I've learned a ton over the years perusing this forum, always impressed by the level of knowledge and the generosity and professionalism with which it is shared. Haven't visited in a few years and was saddened to hear of Terry's passing. Kudos to those who are keeping the forum going. Just wanted to say that first.
So - I'm planning a new bathroom on the 2nd floor of a former church converted into a residence and studio. I've attached some drawings and pictures. The bathroom consists of a toilet, sink and shower. I'm also adding a slop sink for cleaning paint brushes, etc. as the new bathroom is in the studio space. Below the planned bathroom is a 1/2 bath and the kitchen sink plumbing is on the other side of that bathroom wall. There's a 3" vent stack that extends through the roof in the wall between the 1st floor bathroom and kitchen - I'm hoping to tie the new 2nd floor drain lines into that stack and run new vents from the lower fixture drains up the chase and tie in to the new vents. The upper drain lines are all fairly short runs (3 or 4 feet). I'm in Massachusetts so under the UPC I believe.
Aside from the standard "does my overall plan look okay?" I have a few specific questions:
- Can the shower be vented by the lav as I have it drawn? Looks similar to some of the examples in the section on wet venting (248 CMR 10.16(5) ) of a wet vent extension of a horizontal drain line.
- I'm assuming I can't get away with the venting of the toilet and slop sink (it would be convenient framing-wise) . . . but that the same wet vent exception would apply if the 2" drain entered the 3" line downstream of the toilet. Assuming also that the vent would need to be 2" all the way back to the stack.
- The current kitchen sink vent seems wrong . . . it kinda zigs and zags it's way back the stack with a decent amount of horizontal run below the flood-level rim of the sink. I may need to add a chase anyway but I'd have it take off at 45º before running up past the upper drain lines, unless I could use a bow vent?
- The downstairs 1/2 bath lav is wet vented into the stack . . . haven't quite decided how to remedy that but also wondering if I could use the old urinal drain for the lav instead? It might make a little room for other stuff around the stack.
Many thanks for the help!
Eben
