Are there any plumbers in the house?
I am attempting to layout the plumbing. I would love any feedback. My knowledge of plumbing is that the stuff flows down. Other than that I have been trying to read up to keep things to code.
I am in Idaho. There are no local inspections, but I have to pass the state inspection. Idaho follows the UPC with the following exceptions http://www2.state.id.us/adm/adminrules/rules/idapa07/0206.pdf
There are a couple of strange things.
- The 2nd floor bath is over the exposed beam ceiling. So I am trying to hide the plumbing. I am using a floor mount - back outlet toilet. I am also raising the shower to put the drain line under it.
- There is going to be a floor drain in the crawl space under the 1st floor bath. This is so I can easily drain the water heater to winterize the cabin. The state also requires a provision for a water softener installation.
- I am trying to keep one roof vent since I am in snow country.
Here are some pictures. The magenta is 3" pipe, blue 2" and green 1.5".
Also, I have a .pdf file you can download. http://www.geocities.com/merritt000/plumbing_20x30.pdf
EVERYTHING:
(http://tinypic.com/erzn9x.jpg)
1ST FLOOR BATH
(http://tinypic.com/erznld.jpg)
2ND FLOOR BATH & KITCHEN
(http://tinypic.com/erzno2.jpg)
Once I get things figured out, I will be happy to share what I have with other people building the 20wide.
Thank You
I'm a GC with some plumbing experience, Micky but not a real pro. I like your drawing.
One thing, it looks like some of the small vents are facing down where they connect to the main vent - They should point up.
One thing I noticed in the exception link you posted, but I don't think you have a problem with is:
12. Section 703.1 - Underground Drainage and Vent Piping. No portion of the drainage or vent
system installed underground, underground under concrete or below a basement or cellar shall be less than two (2)
inches in diameter. (3-15-02)
You may check for it though.
I see you are allowed to use Aquapex. Were you going to? I did- it's great.
One other point I remember from someone else's posting--If you can get the vent to the peak of the roof, sliding snow and ice won't tear it off.
It looks like you have some wet vents (example - shower raised - second floor - the toilet flushes down the line used as a shower vent- you could simply put a san-tee in the shower line and the main vent above the toilet and connect them together -another - upstairs sink flows down the vent for the kitchen sink), but the exceptions have something posted about allowing it in some cases. Looking more -it looks like there are other areas with the same problem. If not covered by the exception they would have to be changed. I'll have to re-read that exception to try to figure it out. I don't think we are allowed any wet vents here, but I haven't seen the current plumbing code.
Here is the exception - seems clear as mud to me. Maybe it allows it - anybody know?
21. Section 908. Exception - Vertical Wet Venting. A horizontal wet vent may be created provided it
is created in a vertical position and all other requirements of Section 908 are met. (7-1-98)
It looks like what it may mean is that the example of the kitchen sink would not be allowed because there is horizontal piping above it- the shower one is also questionable due to horizontal waste line used as vent - probably not allowed without the fix I mentioned.
Great drawing -- what software did you use?
Thanks Glen, I changed the upstairs shower. I also think I remember reading something about not being able to add any fixtures downstream of a toilet in a wet vent? This should fix that.
I am also confused about being allowed a horizontal wet vent as long as it is vertical. I think this may have to do with branching off a horizontal vent at 45 deg or more? I figure once I get it where I am happy, I will ask the inspector to clarify. Or maybe I will have him look over the plans so I don't have to change things later.
I think the 2" only applies to if the pipe is burried. I am over a crawl space. I would think the 1.5" bath pipe should be OK.
I am using aquapex. This should make installation a lot easier. Also, I like the idea of being able to shut off zones I don't need. When we use the cabin it the winter I can only turn on water to the toilet and sink. That way I don't have to worry about re-winterizing the washer and dishwasher. Also, I think it will be easier to run all the lines so they can drain.
(http://tinypic.com/es9u1l.jpg)
n74tg, I used a CAD program called SolidWorks. It is very much overkill and took a while, but it makes visulizing it much easier for me.
OK, I was doing some more reading. Per the UBC, it looks like the make length for a wet vent is 6'. Also, "all wet-vented fixtures shall be within the same story.
I will have to change the kitchen sink. I will get it reposted when I am done drawing.
I thought plumbing was supposed to be simple. "stuff flows down hill, and don't chew your nails"
Thinking a little more about it, Micky, I've always just made sure I never had a wet vent so that I never had to worry about their interpretations of the exceptions.
I am now remembering why I like Aquapex so much -- I plumbed the water lines for the new bathroom and laundry in less than 2 hours - hot and cold.