DWV planning help,

[rkundrat]

This is my second bathroom project I'm doing on our house. The DWV layout of the first was rather simple and I had multiple existing vents to tap into. This time, I've got only one existing roof penetration, and two exterior walls. I'm not familiar with how to properly utilize wet venting, but am hoping it may help in this project. Right now I'm trying to come up with a simple approach to the DWV plan.

In the attached images, can I utilize the green pipe as a wet vent for the toilet, shower and tub as shown? Or, is that not sufficient for 3 fixtures? Also is that vent too far away? (rough scale, the floor is 14' x 8'.)

I can easily introduce additional vents in the wall that the sinks and toilet are against if needed. Thank you for any thoughts or guidance in advance.

 

[Cwhyu2]

The tub,water closet and shower have to be vented

 

[Sponsor]

 

[rkundrat]

The tub,water closet and shower have to be vented

Thank you for your reply. So I'm assuming that the green pipe can not be considered a wet vent for any of those.

Alternatively does the following satisfy the requirements for circuit venting?

 

[Cwhyu2]

I know this isometric does not represent you layout but might help you understand DWV systems.