[Cob] interior walls, width, curvature

[Tys Sniffen]

Hey folks,

 

What's the word on the 'standard' (ha) thickness of interior,
non-load-bearing walls? I've worked with stuff about 4 to 5 inches thick.
but not sure if there's other opinions.  The ones I worked with were quite
curved as well (for stability) 

 

Does anyone have a max length one could go with a straight, thin, interior
wall?  --asking from N. CA, earthquake country.

 

 

Tys