Thanks for the feedback & suggestions - have made some edits so think this should work
Have included picture of existing sewer & proposed stack.
Blockages at the sewer Y on sewer I can rod from new chamber
Blockages from shower/basin can either be rodded from one of 2 internal access points...
Both the top and bottom of the extension are right on the boundary - so can't put the IC above the existing sewer.
I interpreted the BI said I needed an inspection/rodding chamber that would mean all waste from the property needs to be through the IC that can then be rodded.
ie I'm not...
I'm building an extension, and working on sewer plans. We're building over a shared drain and so BI wants new inspection chamber for rodding access.
We want a patio, so IC needs to be top right or bottom right.
Can you see any glaring problems or issues with this proposal? (shared sewer runs...