I am having difficulty following your post.

Are you sure about 6" pipe? Schools and office buildings and
cities have 6" runs, but they would be rare in residential.

White PVC is the norm. Green is usually light weight drainage
pipe or really heavy pressure pipe with O ring seals.

Fernco or Mission couplings would be my choice for tying onto the
cast iron stub outs. These are made with different diameter ends
to transition from cast to clay or whatever and to change
diameters. Establish the fittings on the cast iron stub outs
first, cut the pipe runs as required. Make sure you have a clean
out at the head end of the pipe so you can rooter through the main
line and catch all the stubs outs.
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)




"kstar" wrote in message
oups.com...
The local 'big box' has 6' white IPS PVC DWV with cellular core.
I've
done a little research and it is unclear if I can use the white
PVC for
an outside replacement of the 6" Clay pipe. The codes on the
DWV pipe
indicate it is F-891-00, schedule 40, NSF, and JM 30/35. The
building
department for the city has told me I can use schedule 40. But
is the
white OK for US outside applications? I know green is usually
used.
Any advise is appreciated.