With regards to the plumbing of the “washer box”...



Okay so from the trap horizontally over to the Sani-T... is there a minimum distance on this?

Assuming 2” pipe everywhere except 1.5” dry vent on top of the Sani-t.

I would think there’s a minimum, otherwise this is more like a S trap than a P trap... Thoughts? This photo I found online is a great example of what appears to be a S trap.

The minimum length of the horizontal pipe from trap weir to vent is twice the pipe diameter(4" in your case for 2" drain pipe).

Is that 4 in distance from the center of the outlet end of the trap to the
Center of the drain vertical?
Also that trap has a gentler curve on one end and a sharper bend on the other end. I'm guessing the gentler curve is the inlet side and the sharp bend is the outlet side?

I have a existing washer box w/ 2" standpipe going straight down thru the floor
to a bend in unheated crawl space. Then horiz to a inline trap and into an
el then down into the dirt and off to sewer.
Stupid me, trap freezes in winter lol.

So I need to cut pipe in wall, install trap,vent and el down thru floor.
Problem is, Horizontal measure of a 2" trap,san tee, and sweep el glued tight to ea other is 17" o.c.
offset distance. below floor I have a beam right at that location.
I can only offset 6" horiz from existing vertical below floor due to obstructions.
So I need to offset 11" to the left from washer box to inlet of trap,
so the outlet of trap can go into san tee w/ studer vent and into el goind down
thru floor to crawl space....does that make any sense?



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