Can I use S&D for DWV in wall?

[fuzzymaster]

I would like to not cut the wall open, and wondering if I could use 3" S&D pipe in wall . They make the bushing to connect sched 40 to S&D so would be all glued. Thanks

[akaothermick]

It's your wall, not getting it inspected you can do whatever you please, but its not code in my locality,

[fuzzymaster]

I am going to see if I can order a stick of sched 30 from local supply house, I think that will meet code.? I would rather do it right even if the S&D would work.

[akaothermick]

Use furring strips on the wall out to get the room to fit the 3' sch 40 DWV if you cannot fit it in the wall,

[fuzzymaster]

The point is that I don't want to cut the wall out. I am adding a second story toilet in attic space I am finishing off. After checking, sched 30 is not in code either.
Sched 40 3" = 3.50 OD
30 3" = 3.25" OD
S&D 3" = 3" OD
Just for some reference.

[akaothermick]

Kind of looks like what you want to do, is not possible, and meet code.

[fuzzymaster]

Yea, that's what I am seeing, but in practical sense, what could be the downside of using S&D in a wall?

[pushkins]

Codes are there to protect two groups of people:
1: you as the homeowner from a bad contractor

BUT most importantly

2: the next buyer.........................they have no idea what anyone before them did, they trust it was to code and rightfully so.

When in doubt.......Do it right ! cut the wall and install sch. 40 3" it's not that big a deal to re drywall or repair the cut out section.

[fuzzymaster]

But theoretically, it would work just fine.? I get the codes, I have had to work with them. Thanks for all replies, very helpful site. Glad I found it.