A laundry sink is supposed to be 2" waste line and 1.5" trap arm.
A washer is 2" waste line and 2" trap arm.
Some areas like a 3" waste line and 2" trap arm for a washer.
What are the requirements for a laundry sink. There's a 1 1/2" drain pipe on floor below where I'd like to put the washer.
If 1 1/2" is ok then I could run a pipe one floor down and into a laundry sink. It's not the best solution but may be allowable if the 1 1/2" drain is sufficient.
Last edited by skoby; 06-06-2012 at 10:43 AM.
IPC is now all 3" waste and 2" trap arm.
If you are in Mass, doing this without a permit and a license could land you in a world of trouble and wind up costing ten times what you saved by doing it yourself. Not that I'm being anti DIY here because I have been accused of that before, just telling you the what if's. Massachusetts is not a DIY plumbing friendly environment.
Last edited by Tom Sawyer; 06-06-2012 at 10:46 AM.
[B]No, plumbing ain't rocket science. Unlike rocket science, plumbing requires a license[B]
Looks like I'm at a standstill for now.
Short answer...if the pipe exits out the roof, it is likely a vent! Now, you don't need a bunch of vents out the roof, they can be combined, but the rules are you can't combine them just anywhere...it must be 42" above the highest drain or 6" above the flood plane of the sink, whichever is higher. Once a drain, always a drain...same thing on a vent. Now, sometimes it isn't that hard to add a vent so you can use an old one for a drain, but again, there are rules.
Important note - I'm not a pro
Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014