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Old 12-29-2012, 05:32 PM   #31
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Drain stack configuration


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Originally Posted by TheEplumber View Post
Did a quick fix for you. This is just one way to do it and it may not be totally code correct for your area.
Thanks E i was trying to post some drawings but cant seem to get my scanner to work there are a couple ways he could do it and this is one of them. simple. only on the washing machine to the stack req, min 3 inch. IPC. i hate AAV's they do make me lots of money though, personally i use them only and only when VTR is not possible.

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Old 12-29-2012, 05:55 PM   #32
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Thanks E i was trying to post some drawings but cant seem to get my scanner to work there are a couple ways he could do it and this is one of them. simple. only on the washing machine to the stack req, min 3 inch. IPC. i hate AAV's they do make me lots of money though, personally i use them only and only when VTR is not possible.
I really hesitate to put up drawings- it makes me feel liable for their future problems
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Old 12-29-2012, 05:59 PM   #33
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I really hesitate to put up drawings- it makes me feel liable for their future problems
If this post goes to four pages I am gonna have one of my on line meltdowns. i know exactly what you mean.
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Old 12-29-2012, 09:13 PM   #34
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Drain stack configuration


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Thanks E i was trying to post some drawings but cant seem to get my scanner to work there are a couple ways he could do it and this is one of them. simple. only on the washing machine to the stack req, min 3 inch. IPC. i hate AAV's they do make me lots of money though, personally i use them only and only when VTR is not possible.
Thank you, Javiles and E!

Javiles, can you reword what you said (again)? I don't want to assume anything by mistake.

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Thanks E i was trying to post some drawings but cant seem to get my scanner to work there are a couple ways he could do it and this is one of them. simple. only on the washing machine to the stack req, min 3 inch. IPC. i hate AAV's they do make me lots of money though, personally i use them only and only when VTR is not possible.

Here is another version of the sketch. It should be very close to E's drawing. On that drawing by E, thank you.
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Old 12-29-2012, 11:39 PM   #35
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Drain stack configuration


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Thank you, Javiles and E!

Javiles, can you reword what you said (again)? I don't want to assume anything by mistake.




Here is another version of the sketch. It should be very close to E's drawing. On that drawing by E, thank you.
That wont work not even close to E plumbers Drawings, what do you want me to reword. now you've created a new problem you now have exceeded the trap depth on the washer not to mention misplaced fittings, cant understand why not go with what E plumber drew?? your over thinking this and complicating it for yourself. if that set up wont work post a drawing showing the fixture placements along with the position of the stack. there are multiple ways of doing it , a layout will help to get what will work best for you.
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Old 12-30-2012, 01:15 AM   #36
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Drain stack configuration


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I base my opinion on many years of having to vent through the roof. OK. I have been hearing that "older plumbers" have not quite taken to AAV's entirely. I can not, either, so that is why I was thinking about having one vent through the roof; apron strings and emotion on my part, no science.

UPC also says that the combined cross sectional are of the vents through the roof shall be equal to or greater then the building drain. ... I've never been given a "official" reason for the 4" venting rule except that it equalizes pressure. That sounds official enough to me.

Drainage fittings are designed with sewage flow in mind not air flow. A sant is meant to flow from top-down or from the branch-down. Got it. Thanks.
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Old 12-30-2012, 01:23 AM   #37
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Thank you jklingel. Great minds think alike.

Since you chimmed in, jklingel, what's your opinion about the "double trap" discussion. I'll defer to the plumber, but it sure looks to me like a bad idea; one fixture, one trap.

As for the topic on using the AAV, I haven't made up my mind yet on what I would end up doing. Since either way really don't have any negatives (from I have been reading), I guess AAV would be easier to install than the regular pipe vent method. I am going to go AAV, etc, as mentioned. You just have to remember to install the AAV's in a little recessed box so you can get at them if/when they go boobs up. Hang a picture of Grandma over the box. That said, I am giving serious consideration to stubbing up a few inches into the insulation (30-some inches thick) for pipe vents, just for stink and giggles.
See after bullets. This has been very informative, thanks to some pros who enjoy educating the masses.
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Old 12-30-2012, 08:53 AM   #38
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Drain stack configuration


Haha!

I noticed what I misinterpreted off of E's drawing.

Not to complain, but I am having to guess at part of your (javiles and e) responses because I don't know what a 2" combo and 2" wet vent exactly mean.

And what javiles typed... "there are a couple ways he could do it and this is one of them. simple. only on the washing machine to the stack req, min 3 inch." What do you mean by this? Do you mean tie in all three fixtures into a 3 inch (minimum) pipe? Would you mind describing how the venting would be in your suggestion?

So please elaborate clearly. LOL.

Men... it looks like we will definitely go into the 4th and even the 5th page of this post.

To keep things moving on my end, I have uploaded yet another sketch version based on my "guesses". I look forward to your constructive criticisms. (seriously)

Much appreciated.
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Old 12-30-2012, 10:16 AM   #39
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That will work 3 inch on the washer branch to the stack,
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Old 12-30-2012, 10:20 AM   #40
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That will work 3 inch on the washer branch to the stack,
You did it again... hahahaha... Hard to understand what you said... lol!

Anyway, I won't be able to do a 3 inch in my 2x4 wall studs. So, it will have to be a 2 inch.

Your thoughtm, javiles?
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Old 12-30-2012, 10:20 AM   #41
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IDrainage fittings are designed with sewage flow in mind not air flow. A sant is meant to flow from top-down or from the branch-down.
It is typical to use an inverted San-T for venting.
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Old 12-30-2012, 10:28 AM   #42
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It is typical to use an inverted San-T for venting.
I used Both never had a problem as far a inspections or function.
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Old 12-30-2012, 10:45 AM   #43
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Drain stack configuration


hammerlane,

Thank you for the photos. The middle picture you attached is 95% accurate (i think) match to how my washer line and lav plumbing would look like! Thanks for the visual.

I have verified the pipe sizes and have included the revisions to the attached sketch version. The changes include the followings:

a) washer box drain pipe will be 1.5" - then I will have the drain pipe increased to a 2" p-trap connected to a 2" drain toward the vanity drain 2" s/tee.
b) the waste (main) drain is in fact 3"
c) all air vent pipes will be reduced from 2" s/tees to 1.5".
d) added another clean out after the lav.
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Old 12-30-2012, 11:56 AM   #44
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Drain stack configuration


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That will work 3 inch on the washer branch to the stack,
You are saying The washer branch drain(shown in green in the diagram) has to be minimum 3"??

I agree that the stack has to be 3" but not the washer branch. I had same discussion with my inspector and he agreed that washer branch 2".

AUTOMATIC CLOTHES WASHERS

406.3 Waste connection. The waste from an automatic clothes washer shall discharge through an air break into a standpipe in accordance with Section 802.4 or into a laundry sink. The trap and fixture drain for an automatic clothes washer standpipe shall be a minimum of 2 inches (51 mm) in diameter. The automatic clothes washer fixture drain shall connect to a branch drain or drainage stack a minimum of 3 inches (76 mm) in diameter. Automatic clothes washers that discharge by gravity shall be permitted to drain to a waste receptor or an approved trench drain.
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Last edited by hammerlane; 12-30-2012 at 12:03 PM.
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Old 12-30-2012, 11:57 AM   #45
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Drain stack configuration


of note is the orientation of the wye and 1/8th bend in this picture. i assume that is because any condensate would then "go with the flow" as if the fitting were being used for draining. i would have installed it reversed for the air to flow up; learn something every day.
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