 |
|
| Browse | Ask | Answer | Search | Join/Login |
|
|
||||
|
Basement sink plumbing help
I am attempting to remodel our basement. We would like to add a sink to a new bar in the basement. There is a soil stack servicing the bathroom upstairs shower, tub and sink. I have a couple questions.
1. Can I add the sink and not have an additional vent if the drain is within 5 feet, IE direct venting. I live in MI. 2. I would like to go through the existing cleanout as access to drain the sink. Can I add an extension pipe at the cleanout, drain the sink into that and then add a new cleanout at the end of the extension? 
|
||||
|
||||
|
Hi Brodiemsu 1) You need a vent for this setup. If you don't have a vent on this sink the sink PTRAP can get siphoned of water every time a large volume of water passes the cleanout and that will allow sewer gasses into the home... a definite no-no! You will need to vent the sink with an 1.5" vent and connect it into the vent system at a minimum of 42" off the floor in the basement (if there is a vent down there now), or at 42" off the floor of the first floor. You could also install a mechanical vent, called an AAV (air admittance valve), but with the fixtures above the new sink you can get "negative pressures" and an AAV really isn't made for these cases, but it is definitely better than nothing, OK? 2) Code would never allow it, but if you can find a threaded bushing that fits your cleanout threads then yeah, many people get away with installing the sink drain piping like you want as long as you install a wye fitting for the new sink drain/vent and a full-size cleanout in the end of the new drain as you planned. Installing a drain into a cleanout is frowned upon because the cleanout fitting doesn't have direction like a wye or a sanitary tee fitting does, and waste from above can kind of flow into the new drain pipe coming out of the cleanout... make sense? In most cases, it isn't usually a big deal... see image below. Questions... let me know? Mark |
||||
| Question Tools | Search this Question |
Add your answer here.
Check out some similar questions!
Whenever a large volume of water goes down my kitchen sink drain, it causes a back up in my basement sink, with food particles coming up as well. The basement sink is located directly beneath my kitchen sink. Based on some advice posted in similar threads, I decided to the snake the line between my...
Hi. Our house is an expanded & completely remodelled older home, with new main floor kitchen incl. garbage disposal and dishwasher which drains into kitchen sink line. Our kitchen sink drain will sometimes backup into our utility sink in the basement, including solid food particles from the...
I have modified ranch, with kitchen sink with Garbage disposer on first floor and in the basement I have Utility sink next to washing machine. Water is backing up in that basement sink when ever there is large volume of water is released like washing dishes and running disposer . Stink...
I'd like to install a utility sink in the basement and have attached a drawing illustrating the current piping and proposed attachment. Basically, the kitchen sink drain goes directly into a drain in the basement floor via a 1-1/2" steel pipe, which is tied to the sewer system. I'd like to put a...
I have a 1st floor kitchen sink directly above a basement sink. When the 1st floor sink is full, it drains quickly and backs up in the sink below - which then drains relatively quickly. No other problems here - the dishwasher drains fine, general use is fine - it's only when there's a full sink of...
View more questions Search
|
