Adding a sink drain into washer pipe

[patryk]

Hello. I am located in Florida. I want to add a sink in a room on the other side of a concrete wall from the washer in the garage. The washer stand pipe ends at 3', the sink would be 33" high and would be located 2' away from the stand pipe. The stand pipe has a P trap and goes inside the concrete wall into a vent. I was planning to connect the sink drain pipe into the washer stand pipe with an additional vent OR using a double sanitary see and connecting both sink and washer with a p trap into it. The sink would be used very occasionally.


Here is a picture of the washer drain pipe

Vent view from the roof

And here is how I am planning to do it

Would that work? Is there any simpler way of adding a sink?

 

[Reach4]

Would that work?

They would work, but IPC calls for the drain line carrying laundry stand pipe drainage plus something else to be 3 inch min.

If that drain pipe is 2 inch, I suspect it would be likely that a request for an exception would be allowed. If the install had been done several years ago with 2 inch, it would have been grandfathered in.

If that wall was not there, you could call it a laundry sink and done this with a 2 inch pipe:

 

[Sponsor]

 

[patryk]

If that wall was not there, you could call it a laundry sink and done this with a 2 inch pipe

Can't I do this if the sink is on the other side of the wall?

Can i still have the washer hose inside the stand pipe or will it have to flush in the laundry sink?

 

[Terry]

I think adding this to the standpipe like in Reach's drawing would work. The washer standpipe has the p-trap already, you just need to poke a pipe through the wall to pick up the sink. I love having a wash sink in the garage when coming in from the garden.