What you are describing here is not legal.
Is there a p-trap currently installed below the floor?
The current bathtub/shower drain is about a foot below the concrete, so I'll have to 90 off of that, to a straight vertical run to another 90 to my p-trap.
Backfill with dirt or gravel is what our contractors usually do, some people prefer to cap it with a bit of concreteThanks for the info, I really appreciate it. Should I just fill the space in with dirt once I have the trap installed?
If it's in the dirt, access is going to be severely limited, so you use a solvent trap. No need for a union on it. We never use those.Another question about the trap now that we have the orientation sorted out, should I use a trap that has a union on it, or just a solvent welded trap? I'm going to put an access panel on the outside wall to be able to access something in case of emergency, but seeing as though it will be backfilled with dirt, will it matter if I go solid or union?
To clarify, are you installing a tub, a shower or a tub/shower combo?Also, does it matter if I use a 1.5" trap or a 2"?
That's exactly right then. :thumbsup:Ill be installing a tub in an alcove then tiling the surrounds and adding a shower head, so I guess a tub/shower combo. The drain line in the picture is a 2" so I'll just use the 2" trap. I picked up one of those bushings that reduces to 1.5" because I noticed that all of the tub drain kits at the store were 1.5".