Diameter vertical pipe that runs into the basement floor.
Pre plumbed drain piping in basement floor.
The steps are based on.
Plumbing and piping pre plumbed basement questions i m sure this has been posted before but i am in the beginning of finishing my basement and there is a bathroom.
For these situations the biggest time saver is to build it under a first floor bathroom.
Most recently built homes have plumbing stubs pre installed making installation much simpler.
How to rough plumb a basement bathroom.
This provides easy access to existing utilities and drainage which will reduce both your workload and the permits required.
So before you can do any real planning you have to find that line.
At this point it is all a pre plumbed basement bathroom.
The bath drains for the basement rough in connect into this horizontal section before it leaves the house.
The pipe is for condensate which is fairly clean and fairly small amounts.
If it was laid out for a basement bathroom which would be my guess then those smaller pipes would be vanity drain and would be laid out to line up within a 2x4 wall.
For more volume or for anything you wouldn t want your back yard garden soaking up you really want a proper drain connection.
First locate the main stack the large 3 or 4 in.
From there the pipe runs under the floor and out to the city sewage system under the street.
Floor drains often go to small sumps for diffusion into the soil since they re just intended to handle occasional spills.
Adding a bathroom to your basement can be a fairly long and complicated process.
Floor drains are most often installed during original construction often in the utility area to drain away excess water in the basement.
Standing in my basement looking up i see a number of pipes from all directions feeding into one major vertical stack which disappears into the concrete floor and goes horizontal out the side of the house.
But it may run at an angle rather than straight out to the street.
But not all homeowners are that lucky.
You will need a framing square and a 4 level or some equivalent thing to make a perpendicular square line off of the wall nearest one of the smaller pipes and then the other.