Sink Depth vs. Drain height

[pat bowen]

The center point of the horizontal drain pipe that exits thru the back wall is 14 1/2" below the bottom of the counter top. Can I use a 10" deep single drain undermount sink? No disposal, but will need fitting to drain dishwasher

 

[pat bowen]

One more figure on that. Since the bottom of the counter top is 34 1/2", it makes the center of the drain 20" off the floor. Again, no dsposal, but a connection for the dishwasher drain. Will it fit?

 

[Sponsor]

 

[Jadnashua]

It might be close depending on the depth of the drain basket on the sink. When assembled, the outlet of the trap (the trap arm) must not be required to try to flow uphill to the drain in the wall. So, with a 10" deep sink, maybe 1-1/4" stone counter, and a 2" drain basket, the sum is 13-1/4" Throw some height in for the compression nuts of the drain pipes, and you may not make it.

 

[Reach4]

Here is something else to consider for your shopping and calculating. You will probably have a connection for the dishwasher on the tailpiece.

You will cut the tailpiece shorter, but you have to leave enough for the nut and gasket on the P-trap to hold onto. Also, if you get a plastic tailpiece, there may be an emblem standing proud that will prevent the gasket from sealing right if your gasket goes over that emblem. A metal tailpiece will not have that problem. You can use a metal tailpiece with a plastic P-trap.

 

[pat bowen]

thanks. I don't think that sink will fit. In fact, It might be tough for any under mount sink. A drain basket plus the threaded end, tailpiece and p-trap will be about 8" and I only have 4 1/2. Also,this is going into a high rise condo with no possibility of opening the wall and lowering the drain. I think I will go back to the counter top store, explain the situation and see what they can come up with.

 

[Reach4]

You could put in a higher cabinet if the users are all taller. Some find that to be more comfortable.

 

[pat bowen]

Cabinets all ready delivered. It's my daughters condo, and I don't get down there to often. Was doing some painting this weekend when I discovered the problem. One last question: Would a shallower under mount sink, like an 8"deep, work?

 

[Asktom]

They also make flanged branch tailpieces that connect directly to the basket strainer and take less room

 

[Daniel Kelly]

If you put the P-trap where the drain exits the wall, will that give you enough room? I am sure you have a double sink going into one drain pipe but this was the best picture I could find to give you an idea. If you come out of the wall and turn straight down with an elbow, then a P-trap, you end up just a little above the drain pipe height. I'm not a plumber, so if there are issues with doing this, one of the experts can chime in.