Triple Walls (e.g., furring on both sides)

[Tom315]

I understand furred walls when it comes to EXTERIOR foundation walls.  Which has a foundation wall on the exterior, and an interior wall on the interior.

 

But I'm trying do design a house with a few INTERIOR 8" foundation walls...around a safe room.

 

And I'd like to furr both sides of those walls with 2 x 4s.  Which means "triple walls"...about 16" thick.

 

But Chief will only let me "marry" TWO walls...not three.  I can set the middle (foundation) wall as "frame through" and both of the outer (interior) walls as "Furred wall"...but any door or window only penetrates a (seemingly random) 2 of those 3 walls.

 

Is the only workaround to insert the third wall as "frame separately"...and then insert a doorway or window opening? 

 

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[Doug_N]

And Eric knocks it out of the park!  I was just about to suggest that when I read your reply.  

[Tom315]

The concrete contractor and the carpenter are different folks,  and there are more interior walls than just the furred ones.

 

So I was hoping to have a "concrete plan" with foundation walls on one layer/plan...and a framing plan on a different layer/plan that also includes the furring...with each plan having its own dimensions.

[joey_martin]

I do many of these. I have a 4" interior wall that only has drywall on 1 side. Just draw in in and butt it up against the foundation walls. Use layer sets to separate the 2 plans.

[joey_martin]

And yes...doors and windows will recognize the interior wall and make the appropriate cuts.