gpritchett
New Member
A (plumbing-knowledgeable) family friend (whose father is a master plumber) agreed to install the drain/vent lines for a stackable washing machine/dryer combo into a top-floor condo my girlfriend just bought (which I'm doing a total rehab on.) His plan was to tie the 2" waste into the 3" section of pipe between the toilet closet bend and the fitting at the vertical vent/waste line (see attachments, for existing DWV.) The friend can no longer assist so, I decided to tackle the task myself... While I'm a competent DIYer, DWV plumbing is my weakest skill so I spent a lot of time researching how to approach the job. Unfortunately -or, more correctly, fortunately- I learned earlier today (through this forum) that -despite him having "checked with Dad"- his design isn't feasible as it isn't code-compliant, and would cause the toilet to gurgle (at a minimum) and would/could also cause the water in its trap to be syphoned out.
So, I have only one alternate route for the waste line, and it involves making two, 90 degree turns within the first four feet of the washer's trap. I'd use long sweep 90s (none of the walls are load bearing so, I can use some "create framing" to make this happen within the 2x4s) but, I need to know if this approach will work (that is, the proximity of the elbows won't constrict the discharge.) If it will work, I'd also appreciate advice as to the type of fitting I should use to connect to the 3" vent/waste line. Finally, I know that I also need a separate vent... it will start after the trap, and will connect above the existing, highest branch (?) vent that comes up from the two condos below. Does this need to be 2" or, will 1.5" be okay?
Thanks, Gary
Images (in order):
locn I was told we would tie-into
x is standpipe locn; arrows indicate drain path
existing dwv, in a nutshell
bath into vent-waste line
approx 13 in between clamp and dual fitting
So, I have only one alternate route for the waste line, and it involves making two, 90 degree turns within the first four feet of the washer's trap. I'd use long sweep 90s (none of the walls are load bearing so, I can use some "create framing" to make this happen within the 2x4s) but, I need to know if this approach will work (that is, the proximity of the elbows won't constrict the discharge.) If it will work, I'd also appreciate advice as to the type of fitting I should use to connect to the 3" vent/waste line. Finally, I know that I also need a separate vent... it will start after the trap, and will connect above the existing, highest branch (?) vent that comes up from the two condos below. Does this need to be 2" or, will 1.5" be okay?
Thanks, Gary
Images (in order):
locn I was told we would tie-into
x is standpipe locn; arrows indicate drain path
existing dwv, in a nutshell
bath into vent-waste line
approx 13 in between clamp and dual fitting
Attachments
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locn I was told we would tie-into.jpg32.8 KB · Views: 1,327
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x is standpipe locn; arrows indicate drain path.jpg41.4 KB · Views: 1,019
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existing dwv, in a nutshell.jpg38 KB · Views: 1,227
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bath into vent-waste line.jpg37.4 KB · Views: 1,293
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approx 13 in between clamp and dual fitting.jpg38.4 KB · Views: 955