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Need advice on main stack change... continued?

Author: vbtalent (KY)

Packy you still around??

With reference to the original question: [www.plbg.com]

"lowering the double sanitary tee and putting a 3x2 sanitary tee above it would work fine."

Can I put (2) 2x3 long sweep tees above the sanitary tee one to the left and one to the right - in other words have both tubs and sinks drain into the stack before the toilets or will that run into the 20" restriction on the outlet to the vent, or would it cause any other issues?

The 1 1/2" line on the left is from a kitchen sink would it be OK to add a bathtub to that line if I increased the size to 2" into the stack after they join? Should I be concerned about the line backing up from the garbage disposer?

Re: Need advice on main stack change... continued?
Author: packy a 3x2 double sanitary tee for the sinks and shower placed above a 3" double sanitary tee would be better. then if you could get a 3x2 sanitary tee above that for the kitchen sink, that would be my preference. i wouldn't worry if the 20" vent distance went over by a couple of inches. especially since the sinks are all individually vented.

Re: Need advice on main stack change... continued?
Author: vbtalent (KY) Good advice on the double tee. Any thoughts on the combining the tub and sink?

Re: Need advice on main stack change... continued?
Author: packy i never like to combine a tub and a kitchen sink. good chance that draining a full sink of water may back up into the tub. a bathroom sink is OK because there is no where near the volume of water, suds and food particles as a kitchen sink.