Washing machine drain, stand pipe, P-trap considerations

[isotope]

This is a really clean build of this washing machine box, stand pipe, and P-trap. If only I was so lucky to have this much space. Anyway, I have a couple questions about the P-trap and spacing...

Check out the attached picture. Isn’t the P-trap supposed to be attached so that the vertical part of the P-trap is connected to the stand pipe? And the smoother transition of the P-trap follows onward from there? It is not like that in the picture.

Also, the washer is in the corner of a room and I have some space and obstruction issues that prevent me from putting the vent pipe in the same stud bay as the P-trap. Would it be ok to put the vent pipe into the next stud bay? In order to do so, the short piece of pipe connecting the end of the P-trap to the sanitary tee would have to include a 90 degree elbow because the next adjacent stud bay is on wall that is at the corner of the room. Does that make sense?

 

[Reach4]

Check out the attached picture. Isn’t the P-trap supposed to be attached so that the vertical part of the P-trap is connected to the stand pipe? And the smoother transition of the P-trap follows onward from there? It is not like that in the picture.

What is the vertical part of the P-trap? In the photo, the vertical PVC pipe connected to the box is the standpipe. On the left you have a sanitary tee. The pipe above the santee is a vent pipe, and the pipe below is a drain pipe.

 

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[isotope]

What is the vertical part of the P-trap? In the photo, the vertical PVC pipe connected to the box is the standpipe. On the left you have a sanitary tee. The pipe above the santee is a vent pipe, and the pipe below is a drain pipe.

Sorry. I wasn’t clear in my questions. The first question, I was just wondering about the orientation of the p-trap, and which side should connect to the drain. The U shaped portion of the p-trap has a “sweep”side. It’s not a big deal though. I think the sweep side can connect to either the vertical drain or to the other side closer to the horizontal drain pipe.

The second question I had was... would it be acceptable to use a 90 deg elbow between the trap and sanitary tee? I just can’t fit everything in one stud bay, and need to route the piping around a corner so I can put the vent pipe into the next stud bay.

 

[Reach4]

Sorry. I wasn’t clear in my questions. The first question, I was just wondering about the orientation of the p-trap, and which side should connect to the drain. The U shaped portion of the p-trap has a “sweep”side. It’s not a big deal though. I think the sweep side can connect to either the vertical drain or to the other side closer to the horizontal drain pipe.

Got it. It works fine both ways, but the opposite of the photo is preferred. https://terrylove.com/forums/index.php?threads/proper-p-trap-orientation-flow-direction.74831/

The second question I had was... would it be acceptable to use a 90 deg elbow between the trap and sanitary tee? I just can’t fit everything in one stud bay, and need to route the piping around a corner so I can put the vent pipe into the next stud bay.

I think that is OK to have a long sweep in the horizontal. Maybe medium even. I am not sure. . I am not a plumber.

 

[isotope]

Got it. It works fine both ways, but the opposite of the photo is preferred. https://terrylove.com/forums/index.php?threads/proper-p-trap-orientation-flow-direction.74831/


I think that is OK to have a long sweep in the horizontal. Maybe medium even. I am not sure. . I am not a plumber.

Ugh! I don’t have room for a long sweep elbow to get around the corner. Does anyone know if a standard 90 deg elbow is ok?

 

[Reach4]

Ugh! I don’t have room for a long sweep elbow to get around the corner. Does anyone know if a standard 90 deg elbow is ok?

Vertical to horizontal needs to be long. There are different opinions on using medium for horizontal to horizontal I think.

 

[isotope]

Vertical to horizontal needs to be long. There are different opinions on using medium for horizontal to horizontal I think.

What about a horizontal to horizontal connection. Do I have to use a long sweep 90?