I posted a few weeks ago with a plumbing question I never asked. So here we go.
I am doing a reno in part of my basement and want to put in a 4 piece bathroom.
The bathroom is going to go in front of where the door is currently (the door will be drywalled in to become the back wall of the bathroom).
As you can see, there is a step down, the main line lies 4 feet past the step.
I have a stack with a tree 9 feet over (right) from the door (Where the insulation breaks), and another bathroom on the other side of the wall.
Questions if you can:
1. Do I need a new stack to vent the drains, or can I get away with what I have?
2. How deep beneth the pad does a sewer line lie? I am wondering if I will need to put in an elevated subfloor, or if I can leave it. Might only know when I get in there?
Any advice?
Thanks much fellas!

I am doing a reno in part of my basement and want to put in a 4 piece bathroom.
The bathroom is going to go in front of where the door is currently (the door will be drywalled in to become the back wall of the bathroom).
As you can see, there is a step down, the main line lies 4 feet past the step.
I have a stack with a tree 9 feet over (right) from the door (Where the insulation breaks), and another bathroom on the other side of the wall.
Questions if you can:
1. Do I need a new stack to vent the drains, or can I get away with what I have?
2. How deep beneth the pad does a sewer line lie? I am wondering if I will need to put in an elevated subfloor, or if I can leave it. Might only know when I get in there?
Any advice?
Thanks much fellas!