Steve T
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Howdy folks! I'm hoping for help and ideas to help me add a utility sink in a cramped space - in particular, I want to make sure I get the DWV plumbing right.
I have a tiny laundry room in the back corner of my garage. I have an over/under washer/dryer unit now, and am preparing to add a utility sink on either side of the washer. All the plumbing is against an exterior foundation wall. Unfortunately this room also houses my water heater and air handler; and is barely deep enough for the W/D unit as it is. I need the washer backed as close to the wall as possible, which means there's no room to cross drain and vent lines over each other, or over the rigid dryer duct.
I've sketched up two configurations that I am considering for the sink. The first would locate the sink to the left of the W/D, draining into the existing horizontal branch via a combo wye. Is this a valid approach? The drawback is that I'd have to elevate the sink basin about 6" above its normal height to provide the necessary fall. Also it will not be a straight-back shot; I'll probably need a pair of 45's between the basin and the wall. But the length should be below 24". I don't mind the basin height too much, although this will rule out use of the sink as a urinal. Perhaps also a plus?
Option B is to put the sink on the right side of the W/D. Here I believe it makes sense to drain the sink directly into the W/D standpipe without its own trap. Basically, the standpipe will be a part of the sink basin, sharing a single trap. I don't immediately see a reason why this won't work -- or am I overlooking something? If you're wondering, no, I don't really want to drain the washer into the sink. I like it having its own secured connection to the standpipe. Aside from possible functional defects I've overlooked, the main drawbacks for this approach are that the sink will partially impede access to the water heater, that I'll have to move the 220V outlet, and that I'll have to reroute two gas lines and the furnace flue so you can use the sink without hitting your head! The later items were clearly installed by morons and can be easily routed out of the way.
With that said, I'd really appreciate any feedback on either approach, or alternate suggestions!
I have a tiny laundry room in the back corner of my garage. I have an over/under washer/dryer unit now, and am preparing to add a utility sink on either side of the washer. All the plumbing is against an exterior foundation wall. Unfortunately this room also houses my water heater and air handler; and is barely deep enough for the W/D unit as it is. I need the washer backed as close to the wall as possible, which means there's no room to cross drain and vent lines over each other, or over the rigid dryer duct.
I've sketched up two configurations that I am considering for the sink. The first would locate the sink to the left of the W/D, draining into the existing horizontal branch via a combo wye. Is this a valid approach? The drawback is that I'd have to elevate the sink basin about 6" above its normal height to provide the necessary fall. Also it will not be a straight-back shot; I'll probably need a pair of 45's between the basin and the wall. But the length should be below 24". I don't mind the basin height too much, although this will rule out use of the sink as a urinal. Perhaps also a plus?
Option B is to put the sink on the right side of the W/D. Here I believe it makes sense to drain the sink directly into the W/D standpipe without its own trap. Basically, the standpipe will be a part of the sink basin, sharing a single trap. I don't immediately see a reason why this won't work -- or am I overlooking something? If you're wondering, no, I don't really want to drain the washer into the sink. I like it having its own secured connection to the standpipe. Aside from possible functional defects I've overlooked, the main drawbacks for this approach are that the sink will partially impede access to the water heater, that I'll have to move the 220V outlet, and that I'll have to reroute two gas lines and the furnace flue so you can use the sink without hitting your head! The later items were clearly installed by morons and can be easily routed out of the way.
With that said, I'd really appreciate any feedback on either approach, or alternate suggestions!