Rodding access help needed

[joni os]

110mm in to 5" not a problem. you're not reducing the diameter in direction of flow but increasing it.

 

[oz-plumber]

You will probably find the internal bore of the cast iron pipe will be the same size as the internal bore of the plastic pipe.
It will be a case of the cast iron pipe having a greater wall thickness than the plastic.

 

[Unregistered]

Thanks for your comments

 

[plumben]

i'd get a plumber in that knows what he's doing...

 

[rocketmanbkk]

I still think op is doing it himself

His plumber would know pretty much what he's doing

 

[plumben]

I still think op is doing it himself

His plumber would know pretty much what he's doing

i wouldnt employ someone who asked me whats the best way of doing it and such

 

[plumben]

I'd also point out its pointless doing the work in the first place as theres going to be a kitchen on top of it....