Help with venting

[Jopon]

I moved a bathroom to a new bigger room and I'm turning it into a 4 piece. These is how i am doing my drains. The toilet and the tub needs venting. the shower and the sink are close enough to use the main stack vent. How should I run my vents?

can i go like this? elbow up and run it over to the wall and go straight up to the roof inside the wall (the wall is out of the picture)

the drains are easy enough to run but the vents are confusing me. I'd rather not hire a plumber the house is in the middle of nowhere and they are all asking a huge sum of money to come out and set up my drains for me.

I'm cutting the cast iron a couple of feet above the ground and replacing it with abs.

 

[frodo]

need a bathroom upstairs layout,,floor plan

 

[Jopon]

yes thats basically the floorplan for the bathroom. the "north" and "east" walls are exterior walls. the "west" wall is the one I want to vent through. There is already a vent in the "south" wall. the room is 8ft east to west and 12ft north to south.

 

[frodo]

here ya go

 

[Jopon]

Is there any way to use less vents? I will have to tear up a lot of walls to run my vents the way you are suggesting I was hoping to avoid removing too much drywall. Also I don't know what a rolled vent is. Can you please give me a brief explanation?

 

[frodo]

provide measurements for the fixture placement, maybe, vents can be changed, it all depends on how far the fixture is

a 2'' drain can only be 6' from the vent

3'' is 8' your shower and tub are farther than that from the sink wal...i think...

 

[frodo]

need measurements...