Shower drain pipe

[David C. Macy]

Would you be OK with this drain configuration to a master bath shower?
Seems wrong to me.

[James F. McKee]

although not ideal it is probably less of an issue for a shower than a tub or sink...less chance of sucking the trap dry with a shower I would think

[David C. Macy]

Thanks James, actually the bath tub drain that was properly configured was somewhat slow draining and the shower drained fine.

Now the laundry configuration was recently reconfigured due to a interior basement system and now that the drain is sealed I recommended a trap.

[Joe Funderburk, CMI]

I'd probably put it in the report (not the Summary) and say it wasn't typical but that it should function adequately.

[Bob Elliott]

Dave that looks like an S trap to me.
It requires 3 inches horizontal run after that 1 1/2 inch trap.

The piece after it, qualifies as a vertical pipe in my eyes.

[James F. McKee]

Dave the the laundry sink as it is now configured should have a trap, personally i would not make an issue of the other...jim

[Bob Elliott]

Someone please explain how the shower is not an S trap.

[James F. McKee]

I'm sure not disagreeing with You Bob...you could make a very convincing argument for that in fact being an S trap...I said in my opinion for a shower application although not truly a proper trap set up i really don't think it will ever cause an issue as it is...wasn't trying to be confrontational just offering an opinion...

[David C. Macy]

Good/Great opinions, that is why I post.

Some days the lights are dimmer than others and I need some claification.

Thanks!!

[Michael Larson]

Minimum for a shower drain is 2"

This one is marginal with regard to the S trap but probably will function just fine with out siphoning risk.(gut feeling)

I would call it out as potential problem and recommend correction if sewer gas is smelled in the shower in the future.

[Bob Elliott]

Originally Posted by mlarson

Minimum for a shower drain is 2"

This one is marginal with regard to the S trap but probably will function just fine with out siphoning risk.(gut feeling)

I would call it out as potential problem and recommend correction if sewer gas is smelled in the shower in the future.

Minimum permissible horizontal run would be 3 inches , as it must be double the diameter of the trap size.

1 1/4" is normal for a bath sink ,but I believe the shower drain here is 1 1/2" , unless you are saying the trap is a 1" dia pipe that I have never seen on a plumbing drain before.

[Michael Larson]

Originally Posted by belliott

Minimum permissible horizontal run would be 3 inches , as it must be double the diameter of the trap size.

1 1/4" is normal for a bath sink ,but I believe the shower drain here is 1 1/2" , unless you are saying the trap is a 1" dia pipe that I have never seen on a plumbing drain before.

Not seeing a ruler in the pics and no markings on the pipe how are you sure it's 1-1/2" ?

[Bob Elliott]

Originally Posted by mlarson

Not seeing a ruler in the pics and no markings on the pipe how are you sure it's 1-1/2" ?

Are you saying David would not have called it out if to small.
It is called experience Mike.

Now please show me a shower drain that a fellow Nachi member would not have enough brains to call out if 1" in diameter.

I trust David as being smart enough.

[Michael Larson]

Originally Posted by belliott

Are you saying David would not have called it out if to small.
It is called experience Mike.

Now please show me a shower drain that a fellow Nachi member would not have enough brains to call out if 1" in diameter.

I trust David as being smart enough.

You lost me Bob.

I think it's 2" but I can't tell for sure from the pic. Can you?

BTW-My dad was a plumber. I bet I have done more plumbing that you.

[Bob Elliott]

Originally Posted by mlarson

You lost me Bob.

I think it's 2" but I can't tell for sure from the pic. Can you?

BTW-My dad was a plumber. I bet I have done more plumbing that you.

Do not be so sure,though you may have done a bigger variety.
I had seven buildings I managed and maintained for over ten years,which is a lot of traps,since we used galvanized back in the eighties.

Lots of Chicago Brand faucets too.
I do not miss the fun of using that chisel.

(oh if you are right ,then it needs to be 4")