How do we create exterior walls based upon interior dimensions?

[DIYJon]

I can do the math, but I thought maybe there was a way in the software.

 

My main living space/kitchen is a rectangle with fully finished dimensions at 34' 6" X 16' 7".  One exterior wall is 8" block with a 2.5" interior furred wall with 1/2" drywall (3" total) and the opposite that wall is a load bearing wall at 4 1/2" (3 1/2" studs and 1/2" drywall.)  All of the remaining framing in the townhome is 2x3, not including the flat-roof beams (forgive me, I'm learning the terminology if beams isn't correct.)

 

QUESTION:  If I draw the rectangle using default wall settings, then change the materials and thicknesses of each wall after the fact, how can I reposition those walls to fit interior dimensions, and how do I measure interior dimensions from the drywall as opposed to from the studs?

[Kbird1]

you can set your Resize About  Default temporarily to Inner Surface and also set Temp. dims to uses Surfaces.

 

                                                     

 

 

 

there is a Series on Videos for doing Remodels that may help too...........

 

https://www.chiefarchitect.com/videos/playlists/120/remodeling.html