Utility sink into washer drain

[WizelB]

Hello all! I am wanting to add a utility sink next to my washer. I have searched for posts regarding my situation and can't seem to find anything like what I have. The house was built in 1972. The washer standpipe goes directly into the slab with no ptrap that I can see. Also no venting. So what do I need to do to properly add a utility sink to this? There is no other plumbing close by to tap into.

 

[CT18]

Drop a tape measure down that to verify it is a trapped line which it should be. If so you cant add a sink and another trap on that line. What other stacks do you have in the area

 

[WizelB]

There isn't anything anywhere near this area. This drain is all there is. How will measuring the pipe tell me if it is trapped or not? Thanks for your help!

 

[CT18]

See if there is water in the bottom. If the tape comes up wet there is a good chance it is trapped, it should be. If it isnt you could cut a tee in for the sink and then run a AAV if it is allowed in your area.

 

[WizelB]

Ok. I'll check. Thanks.

 

[Dan the Plumber]

Put in your sink and drain the washing machine into it

 

[WizelB]

The stand pipe is trapped so I think I'll just cut the pipe, put a y in and put the sink in without a trap. Thank you all for your help and suggestions.

 

[Pat the Plumber CIL]

Go ahead and use a trap and connect with a sanitary tee . May not be code but should work