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kevman · 03-23-2015, 02:35 PM

I've got a plumbing question that I'm hoping someone can help me with. When it comes to electrical I find it easy to find appropriate codes, etc. in books and on the Calgary.ca website but plumbing seems to be less talked about...

I'm in the middle of a kitchen renovation and am plumbing in the sink drain. I moved the sink from the existing location to an exterior wall under a window. After some research it appears I'm allowed to use an air admittance valve in situations where a "traditional vent isn't practical". My walls are 2x4 and the window is quite wide and I don't see a practical solution to using a traditional vent. The kitchen happens to be above a partially unfinished furnace room and has easy access to the utilities. As such I figured the easiest option is to plumb the sink through the floor and use an AAV to vent the line.

I have an existing 2" tee that is capped off a few inches above the main clean out that I assume I can fernco the abs drain to. The problem is to get there is a bit of a journey around some hvac and a pair of electrical panels. The actual horizontal distance that needs to be covered is only 6 or 7 feet if I could do it in a straight line. I've attached a crude sketch of the lay out.

Link

Is my convoluted drain even somewhat to code and if it is what is the clean out requirements for the drain line? Do I need a clean out at every 90° bend or just the horizontal ends? If the entire drain pipe is 14' (being generous with my rounding) is a clean out even required? The drain would be 2" to match the existing cast iron. Since the main stack is cast and largely covered in a finished wall with an eletrical panel in front (apart from the lower foot with a 2" tee and clean out) a simple horizontal run from the floor level into the stack isn't that practical.

Thoughts? Are they any good resources out there for plumbing similar to the "simplified electrical code" books you can buy?

03-23-2015, 02:35 PM	#340
kevman #1 Goaltender Join Date: Apr 2004 Exp:	Plumbing Question I've got a plumbing question that I'm hoping someone can help me with. When it comes to electrical I find it easy to find appropriate codes, etc. in books and on the Calgary.ca website but plumbing seems to be less talked about... I'm in the middle of a kitchen renovation and am plumbing in the sink drain. I moved the sink from the existing location to an exterior wall under a window. After some research it appears I'm allowed to use an air admittance valve in situations where a "traditional vent isn't practical". My walls are 2x4 and the window is quite wide and I don't see a practical solution to using a traditional vent. The kitchen happens to be above a partially unfinished furnace room and has easy access to the utilities. As such I figured the easiest option is to plumb the sink through the floor and use an AAV to vent the line. I have an existing 2" tee that is capped off a few inches above the main clean out that I assume I can fernco the abs drain to. The problem is to get there is a bit of a journey around some hvac and a pair of electrical panels. The actual horizontal distance that needs to be covered is only 6 or 7 feet if I could do it in a straight line. I've attached a crude sketch of the lay out. Link Is my convoluted drain even somewhat to code and if it is what is the clean out requirements for the drain line? Do I need a clean out at every 90° bend or just the horizontal ends? If the entire drain pipe is 14' (being generous with my rounding) is a clean out even required? The drain would be 2" to match the existing cast iron. Since the main stack is cast and largely covered in a finished wall with an eletrical panel in front (apart from the lower foot with a 2" tee and clean out) a simple horizontal run from the floor level into the stack isn't that practical. Thoughts? Are they any good resources out there for plumbing similar to the "simplified electrical code" books you can buy? Last edited by kevman; 03-23-2015 at 02:38 PM.