Hi All,
We will be soon embarking on a bathroom refurb, and building on an en-suite within the footprint of the existing bathroom. We will aim to complete as much of the work ourselves as possible, and plan to notify building control and involve trades where necessary. At this stage I'm trying to spec everything up and get a feel of what is and isn't possible.
Originally the drains in our house ran to a septic tank. We had a local ground works company connect them up to the main sewer when that became an option a few years ago.
There will be a second toilet added in the new en-suite and I'm looking the find the best option to get it connected to the sewer.
The existing toilet is connected to a 110mm pipe which rises up through concrete floor in the bathroom, and then goes through the wall under floor level, and into an inspection chamber.
A little further upstream in the system is a vent pipe which runs up the side of our house wall above eaves level. Nothing discharges into this.
Further upstream is the bathroom gully (shower / bath / sink discharge into this) and then an inspection chamber and finally the kitchen gully (sink / appliances discharge into this).
As I see it my options are;
If anyone can advise what is and isn't possible/allowed I'd really appreciate it!
Thanks
We will be soon embarking on a bathroom refurb, and building on an en-suite within the footprint of the existing bathroom. We will aim to complete as much of the work ourselves as possible, and plan to notify building control and involve trades where necessary. At this stage I'm trying to spec everything up and get a feel of what is and isn't possible.
Originally the drains in our house ran to a septic tank. We had a local ground works company connect them up to the main sewer when that became an option a few years ago.
There will be a second toilet added in the new en-suite and I'm looking the find the best option to get it connected to the sewer.
The existing toilet is connected to a 110mm pipe which rises up through concrete floor in the bathroom, and then goes through the wall under floor level, and into an inspection chamber.
A little further upstream in the system is a vent pipe which runs up the side of our house wall above eaves level. Nothing discharges into this.
Further upstream is the bathroom gully (shower / bath / sink discharge into this) and then an inspection chamber and finally the kitchen gully (sink / appliances discharge into this).
As I see it my options are;
- Make a new mini stack inside the bathroom into the existing 110mm pipe with an AAV at the top. Discharge both toilets into this. Not sure how tall this would need to be?
- Core drill a new hole in the exterior wall, connect to the existing vent pipe with a 92.5 degree branch and discharge the toilet into this
- Core drill a new hole in the exterior wall, run 110mm pipe underground and tee into the existing run with a new inspection chamber
If anyone can advise what is and isn't possible/allowed I'd really appreciate it!
Thanks