Help required - build over agreement "refused"

[Hugh Jaleak]

I did a bit of research. Are the things in my garden inspection chambers and not manholes? Does that mean I have to add a rodding eye/manhole between the extension and the inspection chamber?

I always thought rodding is done with a flexible metal hose that rotates, clearing the blockage.

If you want to be pedantic, then an Inspection Chamber is a small pit that you work in from above, whereas a Manhole can be large enough for someone to enter and work within, provided the correct Health and Safety precautions are followed.

Most people now clear/clean sewers with High Pressure Water jetting gear, which will go around corners, but the basic rules of drainage installation still apply, and one of those is, bends in a run are only allowed immediately outside of a chamber. Seems to me the Water Company are being quite generous in so far as they're not demanding you divert the entire run around the proposed extension!

 

[Notch7]

I’ve found Thames water to be pretty helpful and I would say they have helpful here too.

They were never going to pass a bend under a building.

 

[biryani_boy]

ok, I got the agreement. the bend under the build is fine, as long as you can rod from both directions. no other objections, thanks all!