How to replace asbestos soil stack collar and clay pipe into manhole

[Floppy1234]

Morning Can anyone help with how to replace the asbestos collar and
clay pipe please.
The vertical soil stack is plastic. The new pipe will need to enter a manhole. I am unable to access the manhole as yet as there is render covering a wall which has covered some of the manhole.

I am hoping to chisel that off so I can lift the cover.
What sort of parts will I need to replace the asbestos bend bit and clay pipe and any advice as to how to do it.

Many thanks.

 

[Hugh Jaleak]

You could probably reuse the section of clay pipe going into the manhole. Work carefully so not to damage it, using an Angle grinder cut just behind the collar of the clay pipe. Then remove the redundant clay pipe, rest bend and stack etc, avoiding breaking the asbestos if at all possible.

Clean around the cut edge of the clay, you should find either a McAlpine DC-1 connector will fit inside the cut pipe, alternatively, use a Flexseal/Fernco type connector to take you from the clay to 110mm plastic, work back from there.

Long radius bend needed at the bottom of the stack.

 

[Floppy1234]

Thank you.
The soil stack where it meets the ground does not go very deep, will a long radius bend 45 work there do you think?

Im going to start clearing the soil away from the pipe today to show it better.

Broke the manhole cover yesterday, after hours of trying to free it so felt fed up.The manhole was originally covered in cement, I never realised it was there.

The original patio laid next to the house wall compromised the dpm a lot so had to dig all that out. The previous owners have cut into the outside wall to push the paving slabs into the wall so everythings a bit of a mess really.
Levels are out especially where the soil stack is, seems too high and I have shallow foundation? or stones that seem like foundations anyway.
Its challenging me for sure.

 

[Floppy1234]

Some photos. The wall damage by dpm was where previous owners cut into the wall to lay slabs. The damp inside is the wall soil stack runs down. There was a leaking upstairs pipe, fixed now.
The wall around the cement soil stack collar is pretty ropey.
I was hoping to do a French drain against house wall but foundations are very shallow.