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Author:
iQ (WA)
Newbie here,
I am trying to add a laundry room adjacent to a current bathroom.
I plan on extending the main 3" drain into the laundry room and then vent the individual fixtures in the laundry room.
What are my options to extending the drain. The laundry room is going to be to the left in the picture.
[1drv.ms]
Thanks
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Author:
North Carolina Plumber (NC)
Does the new drain have to be up in the floor joist ?
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Author:
iQ (WA)
Putting it the floor joist would be the easiest.
Where else can I add a junction ?
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Author:
steve (CA)
You've got other issues with existing, other than just where to tie into. The sanitary on it's side receiving the sink and tub drains is the wrong fitting, and the sink and tub aren't properly vented.
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Author:
iQ (WA)
The current assembly/fittings were approved by the city inspector during the last remodel about 4 years ago.
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Author:
hj (AZ)
You cannot just put a pipe in somewhere and call it a sink/tub vent, and if your sink was installed properly, it would NOT need THAT vent. NONE of your connections are made with the proper fittings.
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Author:
packy (MA)
you can cut into the 3 inch down where that roll of wire is.
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Author:
hj (AZ)
If what is shown in the picture WAS approved four years ago, then you can do almost anything you want to because the inspector has ABSOLUTELY NO IDEA as what constitutes a proper plumbing system. He is probably a former plumbing contractor who could not cut it and went bankrupt so he decided to become an inspector.
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Author:
iQ (WA)
The current plumbing is the original as it was when built with the house in 1985.
The ceiling was opened during the remodel. The inspector made us carry out some specific changes simply because we opened up the ceiling. The picture was taken during the remodel, for example he made us redo the p trap for the shower, sister the joists the builder cut away.
So the key take away here I am assuming is that I can branch the main 3" before the toilet vent.
How far away has the branch to be from the toilet vent so as not to cause interference.
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Author:
hj (AZ)
It has to be AFTER the toilet's vent, which means between the toilet vent and sink/shower vent, which is going to be "interesting" given the small area available.
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Author:
iQ (WA)
Thanks,
That's what I meant by "before" since I got my start end wrong.
You described the position unambiguously.
I think I can squeeze in a "Y". Any other problems/concerns you see with the plumbing code requirements.
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Author:
hj (AZ)
As I said, if that is the quality of your inspectors, they are NOT going to reject anything you do.
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Author:
iQ (WA)
Is it possible to connect the laundry drain also into the 2" that also connects the shower and sink.
As per king county the dfu loads are.
[www.kingcounty.gov]
The total dfu for 3 would be shower + sink + laundry = 2 + 3 + 1 = 6.
The maximum permissible load for the 2" drain is 8 DFU.
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Author:
North Carolina Plumber (NC)
Here in NC we can't have a washing machine drain into a horizontal pipe smaller than 3". You interfere with the tub's wet vent if you tie into the 2" , and possibly gets suds back up in the tub.
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Author:
iQ (WA)
Thanks,
I am thinking of converting the existing 3x3x2 into 3x3x2x2 double Wye.
One connects to the washing machine and other will connect to sink and shower.
This will free up space because it quite tight otherwise.
Will a 3x3x2x2 work ?
Iqbal
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Author:
hj (AZ)
That means the "double Y" would have to be installed "flat" instead of rolled up on angle the way it appears to be now and which is the way it should be.
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