Master Bathroom Remodel

[stroked80z28]

I am currently remodeling the master bathroom in my home and have reached the point where it is time to start rough plumbing. The attached photo shows a window that I just added. The original vent for the two vanities ran right where I wanted the window, so I removed the vent. I will be installing two console sinks approximately 30" wide each, the centerline of the sinks will be approximately 42" off the centerline of the window. This arrangement places the drain for each sink approximately 84" apart. The capped waste line in the photo is 2" ABS. My questions are:

I believe that because of the distance between the sinks, each fixture will need its own vent. Is this correct?

Is there a code required height for the waste lines for the sinks?

Which fitting should I use where the waste lines (1.5") meet the 2" waste line that goes through the floor?

Thanks for your time. More questions and photos to come as I progress or hit a wall. Thanks again.

 

[The Cobbler]

I believe that because of the distance between the sinks, each fixture will need its own vent. Is this correct?

Is there a code required height for the waste lines for the sinks?

Which fitting should I use where the waste lines (1.5") meet the 2" waste line that goes through the floor?

vents cannot be longer than 5' and yes, each sink needs to be vented
if I recall, about 16" off the floor for waste lines

 

[Jim greengo]

I am currently remodeling the master bathroom in my home and have reached the point where it is time to start rough plumbing. The attached photo shows a window that I just added. The original vent for the two vanities ran right where I wanted the window, so I removed the vent. I will be installing two console sinks approximately 30" wide each, the centerline of the sinks will be approximately 42" off the centerline of the window. This arrangement places the drain for each sink approximately 84" apart. The capped waste line in the photo is 2" ABS. My questions are:

I believe that because of the distance between the sinks, each fixture will need its own vent. Is this correct?

Is there a code required height for the waste lines for the sinks?

Which fitting should I use where the waste lines (1.5") meet the 2" waste line that goes through the floor?

Thanks for your time. More questions and photos to come as I progress or hit a wall. Thanks again.

Just bring up a seperate vent for each above the window,then tie them back together.

 

[Jim greengo]

Revent location depends on what plumbing code you're working under.

 

[stroked80z28]

Just bring up a seperate vent for each above the window,then tie them back together.

Sorry, the photo does not illustrate the height of the window on the wall. The ceiling is vaulted and the window is installed on the "short" side of the room. The top of the window is about 9" from the ceiling.

 

[billconner]

Why not what Jim greengo said? Split left and right, vertical behind each sink, and back together above window. A double 90° 2 x 1.5 x 1.5 would be a choice.

 

[stroked80z28]

Sorry guys. Here is another photo that illustrates why connecting vents above the window is not an option.

 

[rancherbill]

OMG flying King and Cripple studs on the left side of the window. You don't see that too often.


How cold is it where you live? Washington has several climates. Drains in an exterior wall can freeze. We had one freeze twice a year.

 

[Sturgeon]

Run two individual 1 1/2" vent's up into trusses, tie them together and pick up vent going thru roof. Or tie vent's together below window sill but make sure to use drainage fittings on the two vents until above 42". Besides destroying your dill bit by running right under window sill. Other than more work to just go up twice it would in most cases, be easyier and neater. Trap line 18" center off floor, water 22". Fyi, make sure there's not earent nails when you do go thru top plates, never know about those framers.

 

[stroked80z28]

OMG flying King and Cripple studs on the left side of the window. You don't see that too often.


How cold is it where you live? Washington has several climates. Drains in an exterior wall can freeze. We had one freeze twice a year.

The photo makes the bottom plate "issue" look much worse than it actually is.

I am located in Western Washington, no issues with prolonged freezing temperatures here most of the time.

 

[The Cobbler]

where was the original vent tied?

 

[stroked80z28]

where was the original vent tied?

There was a fixture wye connected to the now chopped off pipe and vented where the new window is located.

 

[The Cobbler]

so the vent went thru the roof where the window is? maybe I didn't read the original post as good as I should have... me bad. \but can't you run a vent beside the window and tie in above the window, in the joist or truss bay?

 

[Dig Doug]

Is there a 2nd floor above the bathroom ?

if not run up and make the connections in the attic space
not your exact situation


Easier to see it than try to explain it

you’ll have to make a loop and run up into attic and make the tie in up there then run through the roof structure

 

[stroked80z28]

Is there a 2nd floor above the bathroom ?

if not run up and make the connections in the attic space
not your exact situation

No second floor and no attic.

 

[Jim greengo]

Sorry guys. Here is another photo that illustrates why connecting vents above the window is not an option.

Ok,can you tie it back together in the attic?depending on your location I normally increase to 4" 12" before roof line to keep it from frosting up.

 

[M.Wong]

I don't know anything about plumbing but just had a remodel, two sinks with a window, high ceilings.

They have vents one way for the shower and left sink, the other way for the toilet and right sink.

 

[Dig Doug]

No second floor and no attic.

Crawl space below?

you can separate / Spit / Wye below the floor or in the wall and run to each sink and just have 2 vents up through the roof line

I noticed the plywood sheeting

splitting it below makes less holes in the studs assuming the waste line is ran below the floor joists ….

There are a few ways to do it….

 

[stroked80z28]

Crawl space below?

you can separate / Spit / Wye below the floor or in the wall and run to each sink and just have 2 vents up through the roof line

I noticed the plywood sheeting

splitting it below makes less holes in the studs assuming the waste line is ran below the floor joists ….

There are a few ways to do it….

I also neglected to mention, no crawl space access. Poured slab and sleepers.

 

[Dig Doug]

Then I would wye to each sink in the wall then run it up thru roof and just have 2 vents.
Easy

 

[stroked80z28]

Then I would wye to each sink in the wall then run it up thru roof and just have 2 vents.
Easy

If a use a double fixture sanitary tee, can I cap the top outlet?

 

[Dig Doug]

edit -
is there anything else on that line that needs to be vented?

if you don’t know for 100% sure…
I’d add a clean out to outside then then run the pipe up and tie into the new vent above the sink to the closest sink vent

This vent connection needs to at least 6 inch above the flood plane of the sink
The idea is that if the sink gets clogged it will over flow and not just drain back down in the vent from the Wye.

better to be safe than sorry later…

I’m not there BUT - looks great from my recliner!!

@stroked80z28
I edited my 1st reply after some thinking about…. What IF

 

[stroked80z28]

Drains installed today and vents tomorrow. Nothing is glued up yet. I plan on venting where the sanitary tees are set. Does anyone see any issues?

 

[stroked80z28]

All glued up, I’ll extend the vents once the tub and shower are plumbed. I want to poke all the holes in the roof at once.