I need to get some plumbing in place later this week before we pour (part) of the basement here. This will be an inspected job.
For the toilet, I plan on using a 3″ elbow with a 1 1/2″ heel (for toilet vent and sink drain).
But the shower pan (acrylic) has me somewhat stumped. I’ve never dealt with a shower pan installation before. Do I need to get a trap under the slab? I’m pretty certain the answer is yes. How does a shower pan make a final connection? Is it enough to leave a 2″ pipe sticking up out of the slab or do I need some kind of fitting set in there at right height? I was reading the Lasco website and I see they say to have a 6″ diameter hole in your slab, but they don’t tell you what fitting you need down in that hole.
MERC.
Replies
Yes it needs a trap.
The type of drain that I used have a vertical stub off the trap.
The drain fitting is screwed to the pan and it drops over the stub. Then a rubber is goes between then.
That works great for a wood floor where you can put the pipe in from below and the pan is in place.
A real PITA when you are doing it on crete and the trap/stub has to be in place first.
I was working in an old basement with bowed walls and all kinds of complications so I could not pin it down that close.
My case was a little different in that I has slab, but had to bust part of it up to move the drains and stool and fix some other cracked concerete.
So after I figured out "about" where the drain would go I pointed the horizontal line that way and blocked out area for some room to trim it, put in the trap and have some adjustment. I forgot what I had. Mayube a 12 or 18" sq.
Then after I got the walls up and and the pan then I could pin the exact point and put in the trap and stub and then filled it in.
Hmmmm....yeah, I like that idea of blocking out a square where I can later get the trap put in right where it needs to be.
toilet with a 1 1/2 heel. dont know what you mean but the pipe must be a minimum 3 inch . as far as shower block out the whole shower not just the pipe, that way you can get the elevation right for the shower pan.