Tub Drain Vent
I am having a tough time coming up with a solution to vent my drain for a pier-style tub. Below is my planned layout for my master bathroom remodel. This drawing is to scale. It is about 10' wide (left-right) by 14' long (up-down).
This is on the main floor of the house. The joists below run horizontally. I don't know how I can do a p-trap and then a vent line with this setup. I was thinking about having a vent line go up inside the custom cabinet at the foot of the tub, but I'm not sure if there will be room. The tub drain will be about 9' from the wall on the left that currently has a lot of plumbing in it (this is a shared wall with another bathroom).
Any other ideas? I can help clear up things if needed as well.
Here is a link that might be useful: