Forum Title: Help adding bathroom
Hello! I am wanting to add a second bathroom to my home on the second floor. It is directly above the kitchen, which is next to the only other bathroom. They have a wall back to back directly beneath this was shown. The upstairs is just a empty room that was mostly rough plumbed by the home builder many years ago and never finished. As you can see, there are water lines and the ABS vent pipe for the first floor. If needed, the dimensions of the room are 10' x 6'. The ceiling height is 88", the roof slope begins 28" from the open wall and drops down to 67". I am hoping to not have to tear the floor up to do this project. I have a rear drain toilet and raised platform shower in mind, assuming the ceiling will accommodate this. My questions are: Would there be any issue tying into this wet vent pipe to use as the drain? Is my plan feasible/realistic? Any helpful information/advice would be wonderful. Thanks!
Category: Plumber Post By: RAFAEL SHELTON (Wichita Falls, TX), 04/30/2016

Quote: Originally Posted by remer9 Is there a good reason why? because the code says not to wet venting is for 1 and 2 fixture unit fixtures ONLY toilet is 3

- HARRY HOWARD (Largo, FL), 09/15/2017

You can NOT WET vent the fixtures below with fixture from the 2nd floor. UPC 908.1 Vertical Wet Venting. 908.1.1 Where Permitted. Wet venting is limited to vertical drainage piping receiving the discharge from the trap arm of one (1) and two (2) fixture unit fixtures that also serves as a vent not exceeding four (4) fixtures. Wet-vented fixtures shall be within the same story; provided, further, that fixtures with a continuous vent discharging into a wet vent shall be within the same story as the wet-vented fixtures. No wet vent shall exceed six (6) feet (1,829 mm) in developed length. 908.1.2 Size. The vertical piping between any two (2) consecutive inlet levels shall be considered a wet-vented section. Each wet-vented section shall be not less than one (1) pipe size exceeding the required minimum waste pipe size of the upper fixture or shall be one (1) pipe size exceeding the required minimum pipe size for the sum of the fixture units served by such wet-vented section, whichever is larger, but in no case less than two (2) inches (51 mm).

- DON AUSTIN (Manassas, VA), 10/02/2017

Is there a good reason why?

- GENE NUNEZ (Rogers, AR), 10/08/2017

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