New home construction - Any plumbers in the house?

[chasemech]

If it was in Conn it wouldn't fly
You can't have the two 90's the way you have them on the vent below flood rim of fixture

 

[greenmojo]

It sounds like your architect may not have any plumber friends:laughing: So with your current layout you will be repeating this picture multiple times in the house?

ha, and you are correct. All but one are against the outside wall.

My last house had 2x6 wall construction with r-19 fiberglass insulation. It was an energy efficient home with modest heating cost. One evening my wife called me frantically after coming home and finding our dining room ceiling half down and water was pouring down the inside of the wall. It was the middle of winter and we had very strong sustained winds out of the north. What I found as the culprit was a copper supply elbow for the upstairs bath that had frozen inside the north wall. It was ran closer to the exterior sheathing and poorly insulated around. It must have frozen during the strong winter winds and then let loose as it thawed. It was a mess.

Ouch! That's exactly what I want to avoid.

This morning was 16 degrees outside when I woke up. I am up here on the property in a fifth wheel, and apparently didn't have enough pipe insulation around the water supply lines... froze at the frost-free, so I am trying to thaw that out now and then get that situated. I am going to keep working on the house until I get kicked out.

I know houses are built like this, but personally my approach would be back to the drawing board now while everything is just studs. It would help the plumber, help the insulator, help the flooring guy, help the cabinet installer, and reduce future risk from the cold. I am not advocating changing the whole design, only investigating acceptable alternatives for the vanity/sink/plumbing locations. If you voice your concerns to your architect, he may be willing to help.

I agree, I spent most of last night looking at what options we have and think I can bring it all into interior walls, and make this work, but man... what a pain.

West-side (Seattle) architect for an east-side (Central Washington) home...

~Moses

 

[greenmojo]

If it was in Conn it wouldn't fly
You can't have the two 90's the way you have them on the vent below flood rim of fixture

I believe the minimum is 6" above flood rim, and I am well above that, so hopefully that won't be an issue.

~Moses

 

[chasemech]

Your two 90's just above the double ty going back into the wall are 6" above the flood rim?

 

[greenmojo]

Your two 90's just above the double ty going back into the wall are 6" above the flood rim?

Obviously not... I thought you were referring to the 90's above.

Out of the sanitary tee, I use a sweep 90, then a vent 90 and go on up. I didn't even think of that rule when I did that.

Now I need a solution for that.

~Moses

 

[chasemech]

use 2 45's that would be ok in ct

 

[bamboozled]

Is that a double santee fitting?

I went through this recently myself, and what you want is a double fixture fitting, rather than a double santee.

https://www.google.com/search?q=dou...69i57j69i61&sourceid=chrome&es_sm=93&ie=UTF-8

If you are building the vanity's custom yourself it probably won't be too bad working around the plumbing, but buying stock vanity's will be a hassle.

You could bulkhead out from the wall, just for the vent and go straight up instead of 90'ing it back into the wall, and use a filler cabinet between two standard vanity's. But you'll still be chopping them up to get the plumbing to fit.

 

[milkman636]

........................I agree, I spent most of last night looking at what options we have and think I can bring it all into interior walls, and make this work, but man... what a pain.

West-side (Seattle) architect for an east-side (Central Washington) home...

~Moses

If your planning to stay there a while it will be time well spent. You'll be able to sit there peacefully when it's -20 out and blowing, without having to worry about what is happening to the pipes in your outside walls. And that's on top of all the future cussing you'll be avoiding by not having to work in all the finish items around the awkward plumbing. Looking back you'll be glad they were moved now.

 

[erda]

Inside walls are preferred up here in The Great White North, eh, but it it has to be on an outside wall then through the floor allows maximum insulation.

 

[Looking4new]

I've been building a house up here in central Washington state now for the past 2.5 years, and am working on DWV at the moment.

I have a few simple questions and was interested if any plumbers or people in-the-know wanted to chime in and help guide me?

I'd like to post a few pics and get some feedback on whether this is right, wrong, good, bad.

View attachment 397965~Moses

Why is the double Y on the stink pipe in backwards? You do want the stink to go up and not down?