Connecting drains to venting
Tom,
I just need to clarify what you said below.
"my shower is beyond the toilet so is it o.k. to hook the shower drain into the toilet drain anywhere between the toilet and main?"
Not unless you run a separate vent for the shower.
The vent I ran is a dry vent directly to the outside. This is what I had planned. My drain for my shower would come past the toilet and then I would vent it. A foot down the line I would tie it into the toilet drain. The toilet drain would be vented near here also. They would go up inside my wall and tie together and then connect to the dry vent that I have installed. Does venting the shower drain before I tie into the toilet drain constitute a separate vent per your answer above? That's what I'm not clear about.
3) "I have a vent pipe just for these two fixtures. Can I hook these two fixtures into the vent anywhere between the toilet and main line?"
If this is a dry vent,( no other fixtures draining into it) you may tie the two vents back any place you wish.