Hi
We're thinking of adding a downstairs toilet in the pantry with the soil pipe going through and out the garage, and would like some advice on the most practicable way of connecting into the main drain that runs in the passage between ourselves' and a neighbour's garages.
The drain is 6" diameter clay/salt-glazed and is fed (I believe) by us and our attached neighbour via a 4" pipe, and the other neighbours via a 6" pipe. I imagine the usual choice is to build an access chamber, however with the passage being a tight 900mm and no guarantee of the pipe running centrally in the passage (until I dig it up) I'm wondering at alternatives to achieving compliance.
What I'd like to propose instead is a saddle joint onto the clay with a ramped rodding point and further access in the garage. Do you think this would be OK?
Some pictures. Firstly view of manhole facing back garden (high level plastic pipe is sink drain):
View media item 45121Now facing shared passage:
View media item 45122Looking up the passage towards the drives. Connection is proposed under roughly where the dryer vent is. There is a second manhole on the foot of the neighbour's drive, but I haven't opened it:
View media item 45123Same location, but back towards the open manhole:
View media item 45124Layout of the above. Red is proposed:
View media item 45125Cross-section of the proposed route. I haven't drawn the saddle itself. I've added a standard 450mm access chamber in grey just to show how tight it is:
View media item 45126
Many thanks
We're thinking of adding a downstairs toilet in the pantry with the soil pipe going through and out the garage, and would like some advice on the most practicable way of connecting into the main drain that runs in the passage between ourselves' and a neighbour's garages.
The drain is 6" diameter clay/salt-glazed and is fed (I believe) by us and our attached neighbour via a 4" pipe, and the other neighbours via a 6" pipe. I imagine the usual choice is to build an access chamber, however with the passage being a tight 900mm and no guarantee of the pipe running centrally in the passage (until I dig it up) I'm wondering at alternatives to achieving compliance.
What I'd like to propose instead is a saddle joint onto the clay with a ramped rodding point and further access in the garage. Do you think this would be OK?
Some pictures. Firstly view of manhole facing back garden (high level plastic pipe is sink drain):
View media item 45121Now facing shared passage:
View media item 45122Looking up the passage towards the drives. Connection is proposed under roughly where the dryer vent is. There is a second manhole on the foot of the neighbour's drive, but I haven't opened it:
View media item 45123Same location, but back towards the open manhole:
View media item 45124Layout of the above. Red is proposed:
View media item 45125Cross-section of the proposed route. I haven't drawn the saddle itself. I've added a standard 450mm access chamber in grey just to show how tight it is:
View media item 45126
Many thanks