Diameter vertical pipe that runs into the basement floor.
Pre plumbed drain piping in basement floor.
But not all homeowners are that lucky.
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.
Get a pencil and mark the entire bathroom in the basement including the sink walls shower toilet and the drain lines.
But it may run at an angle rather than straight out to the street.
At this point it is all a pre plumbed basement bathroom.
For these situations the biggest time saver is to build it under a first floor bathroom.
The pipe is for condensate which is fairly clean and fairly small amounts.
It is the best method to check out various basement bathroom plumbing layout ideas for your basement bathroom.
Floor drains are most often installed during original construction often in the utility area to drain away excess water in the basement.
Floor drains often go to small sumps for diffusion into the soil since they re just intended to handle occasional spills.
From there the pipe runs under the floor and out to the city sewage system under the street.
First locate the main stack the large 3 or 4 in.
Most recently built homes have plumbing stubs pre installed making installation much simpler.
This article will get you through the initial stage of this project the rough plumbing.
The bath drains for the basement rough in connect into this horizontal section before it leaves the house.
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 more volume or for anything you wouldn t want your back yard garden soaking up you really want a proper drain connection.
The steps are based on.
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.