Proper venting for new attic bathroom

[Ronney Nanney]

Hi guys, I'm looking for advice on how to vent my new attic bathroom. The pic is my plan for the placement of fixtures and drain lines. The main waste line is already installed and does not connect with the rest of the house. The line runs inside the joist and exits the house and runs through a chase to the ground into the septic tank. I have easy access to the other 2 down stair bathroom vents already in place. Just looking for advice. Thanks!

 

[WJcandee]

Well, if you are in the Dallas City Limits, then Dallas follows the 2012 version of the IPC, with some important modifications. The IPC permits wet-venting of bathroom groups on the same floor. Nothing prevents you from going beyond the code requirements and actually venting each fixture.

See the following UPC handouts (the UPC is more demanding on venting):
Plumbing-and-Trenching-for-Homeowners---2018 (klickitatcounty.org)
Helpful Plumbing Hints for Residential Construction by Bert Polk Plumbing Inspector Lincoln County

 

[Sponsor]

 

[Ronney Nanney]

Well, if you are in the Dallas City Limits, then Dallas follows the 2012 version of the IPC, with some important modifications. The IPC permits wet-venting of bathroom groups on the same floor. Nothing prevents you from going beyond the code requirements and actually venting each fixture.

See the following UPC handouts (the UPC is more demanding on venting):
Plumbing-and-Trenching-for-Homeowners---2018 (klickitatcounty.org)
Helpful Plumbing Hints for Residential Construction by Bert Polk Plumbing Inspector Lincoln County

No city limits or codes, just want it to work correctly.

 

[hj]

The location of the shower mandates that it and the sink have their own vent(s).

 

[Ronney Nanney]

The location of the shower mandates that it and the sink have their own vent(s).

So I don't need a vent upstream of the toilet?

 

[WJcandee]

No vent upstream of the toilet. Look at page 5 here for one way to set up the vents.

Plumbing-and-Trenching-for-Homeowners---2018 (klickitatcounty.org)

 

[Ronney Nanney]

So is this ok? Do I need to add another vent between the toilet and the shower ?I could run it up the shower wall if I need it. (sorry for the poor diagram)