 | | | Basement shower install
Asked Dec 14, 2006, 04:45 PM
—
7 Answers I am installing a shower drain in a 2 year old basement that was only plumbed for a 1/2 bath. I have broken up the cement in the area for the drain which is right next to a vent stack. There is a 3" pipe that runs to the stack. Can I tie my drain directly into this? See attached photo for clarification.
Thread Summary |
7 Answers
 | Senior Plumbing Expert | |
Dec 15, 2006, 06:30 AM
| | |
Quote: |
Originally Posted by rblystone I am installing a shower drain in a 2 year old basement that was only plumbed for a 1/2 bath. I have broken up the cement in the area for the drain which is right next to a vent stack. There is a 3" pipe that runs to the stack. Can I tie my drain directly into this? See attached photo for clarification. | You may tie to the main ONLY if you run a vent on the shower. A much better way would be to connect the shower to the lavatory drain line and let it be wet-vented by it. You do plan on venting the lavatory don't you?
Regards, Tom | | |  | New Member | |
Dec 15, 2006, 10:37 AM
| | | Thanks for the response Tom. I have attached 2 more pictures that show the layout of the bathroom in a little more detail. Based on your response in taping into the lav vent, I would have to break out a lot more cement out to get to the lav drain. Do you still think this is the best method for this bathroom layout? If I connect the shower drain to the lav drain, I do not need to vent the shower? Shouldn't the lav have already been vented in the rough in stage?
Thanks in advance,
Ryan | | | | Senior Plumbing Expert | |
Dec 15, 2006, 11:10 AM
| | |
You have a tough choice either way. If you connect to the lavatory drain and the lavatory has its own vent then the shower will be wet-vented by it. If you connect to the main you will have to roll up a wye on a 45 degree angle downstream from the trap and take a vent off it and revent back into the existing lav vent. Unless the lav has a vent run up- through the roof you'll have to run a vent on it. Your choice, Tom | | | | New Member | |
Dec 18, 2006, 11:58 AM
| | | If I tie the shower drain to the lav drain, can I vent the lav with an AAV vent? Or do I need to go up through the roof? | | | | Senior Plumbing Expert | |
Dec 19, 2006, 04:50 AM
| | |
If local codes permit, a AAV's acceptable. Good luck, Tom | | | | Junior Member | |
Jan 10, 2007, 10:44 AM
| | | Quote: |
Originally Posted by rblystone I am installing a shower drain in a 2 year old basement that was only plumbed for a 1/2 bath. I have broken up the cement in the area for the drain which is right next to a vent stack. There is a 3" pipe that runs to the stack. Can I tie my drain directly into this? See attached photo for clarification. | If I wanted to install the shower drain to the 3" pipe as this user asked, how would you attach to the 3" pipe? Do you cut a section off and put a tee in place, and reduce down to 2"? You'd also need a p-trap right? If you wanted to then vent this (which is necessary from what I can tell), where would this branch from? This vent would then find it's wait and connect up with another vent, possible the vent for the lav? Does it matter how you couple that vent together? | | | | Senior Plumbing Expert | |
Jan 11, 2007, 07:11 AM
| | | Quote: |
Originally Posted by mtnbkr If I wanted to install the shower drain to the 3" pipe as this user asked, how would you attach to the 3" pipe? Do you cut a section off and put a tee in place, and reduce down to 2"? You'd also need a p-trap right? If you wanted to then vent this (which is necessary from what I can tell), where would this branch from? This vent would then find it's wait and connect up with another vent, possible the vent for the lav? Does it matter how you couple that vent together? | If you connect to the main using a 3 X 2" wye or combo you will have to roll up a wye on a 45 degree angle downstream from the trap and take a vent off it and revent back into the existing lav vent. Unless the lav has a vent run up- through the roof you'll have to run a vent on it.
The shower will be connected through a "P" trap and raiser. It does not matter how you revent, just that you do. Good luck, tom | | |
| Thread Tools | Search this Thread | | | | Add your answer here.
Check out some similar questions!
Install toilet in basement [ 1 Answers ]
Install toilet in basement.
How do I know where to cut into drain pipe?
Main floor drain pipe comes down into basement floor at the back of house, basement floor drain is in center of house, than it runs out to front street. Can I cut in anywhere or?
Also want to install sink.
Basement Shower Install [ 4 Answers ]
I have a basement with a rough-in for a 1/2 bath but would like to add a shower. If I use a preform shower can I elevate it so as to put in a trap? Do I even need a trap? If I do need a trap how much space is needed from drain to trap and trap to main line? Also can I utilize the drain pipe for...
Basement Shower Install [ 1 Answers ]
Hello,
I'm installing a bathroom in my basement. It was originally roughed in for a toilet and sink, of course, we want a shower as well.
The shower will go close to where an existing floor drain was, so I dug up the floor and took out the old floor drain trap, y'd the line and put in a new...
Best way to install fixed shower head and personal shower [ 4 Answers ]
I am installing a new shower setup. I want to install a fixed shower head as well as a hand held personal shower with hose. On the Kohler website they sell a diverter valve with some sort of backflow valve for this purpose. I have a friend who just had this done and he has no diverter valve just...
Trying to install bathroom in basement [ 1 Answers ]
I am a rookie or novice person. I am good with instructions. I have an unfinished basement. In the basement, I have a full bath rough-in. I am looking for a good book to use as a guide on how to finish my bathroom. I am thinking of adding a full bath in the basement. I need guidance in what...
View more Plumbing questions Search
|
