MB wrote:

I need to tap off a sewer line between the street & the house that I am
told is either Orangeburg or Terracotta. Is it possible to split
either types of these lines and insert a tee?
I'm not sure which it is - Just bought the house and the neighbors are
saying it is one or the other.

Thanks


Yes, possible. Orangeburg could be cut with a long Sawzall blade.

Vitrified clay pipe is more difficult.
Best is to get a big wet saw.
But for a couple of cuts you could use a dry abrasive masonry blade
in a circ saw. Make lots of small cuts and break away material.

Either pipe type can be joined using Fernco "Mission" style couplings.
Insert a PVC TEE or WYE with short lengths of PVC pipe on each end.
Slide rubber coupling all the way onto PVC pipe and then slide
backward ontlo the old pipe.
Some clay pipe info:
http://www.pavingexpert.com/drain02.htm

Couplings:
http://www.fernco.com/

I don't know what your intent is for this project but you
had better run it by the authority responsible for the sewers.

Jim