EXT wrote:
John Corliss wrote:

I'm going to have to replace my ancient (61 year old) 4" Orangeburg
with PVC. I'll be burying the new line unbedded decomposed granite,
about three feet deep. Should I use 3034 or Schedule 40 PVC?

TIA

Check with your city, town or municipality or whatever it is called in
your area, they will have specifications that you need to work with.
Here on the internet

You mean "usenet", don't you? This is usenet, not the internet AFAIK.

we don't even know the country you are in, so how can we help?

It's not a code issue. I already know I can replace the pipe with PVC
and there are at least the two grades that I listed. My question was
which type of pipe is preferable for sewer line, not which meet my local
code. I already know that both meet the code.

--
John Corliss