Correct wet vent design???

[cjdavis312]

Shower to the left (2"). 2" wye/45 headed back into wall picking up double vanity. Double sinks will be off to the right of the toilet and will be done correctly connecting back into those san tees (and vented above them). How's that wet vent of the shower and toilet look dealing with IPC???

 

[Terry]

That works.
I don't often get to say that.

One more example of adding a tub to a 2" lav drain that also vents the toilet.

 

[Sponsor]

 

[cjdavis312]

Oh thank the dear baby Jesus. Thanks Terry. I've gone through many versions (and hours of scouring this site ) before landing on that one. Now let me run something else by you...

 

[cjdavis312]

This is where the 3" line would connect to the stack. So a 3" san tee with an 1 1/2" side inlet grabbing the freestanding tub drain (the last and highest fixture connecting to the stack, all dry vent above going through the roof). Question is... does the tub need a seperate, rolled wye vent connecting further up on the stack or can the stack serve as the vent even with the 3" coming in???

 

[Terry]

Where is that in relation to the other plumbing pictured?
The tub needs a vent within 42" of the trap.

 

[cjdavis312]

So it is about 5' from the WC to the 3" san tee (the main stack). That 3" san tee would have an 1 1/2" side inlet grabbing the tub (less than 3' trap arm on tub to the side inlet). Above the san tee on the stack is dry vent to the roof. Does that tub trap on the left need a separate vent or will the main stack serve that purpose?

 

[Terry]

Three feet? the vent over the santee works.

 

[cjdavis312]

Yes, I cut the mock up a bit long in the picture but the trap arm on the tub will actually be under 3 feet long. I just wanted to be sure that the 3" line dumping into the san tee wouldn't screw up that serving as the vent for the tub on that side inlet. That is, is the siphoning of a trap only a concern with horizontal flow and since the 3" line goes vertical at the san tee then it will still operate as a vent for the side inlet tub drain?