The Ontario Building Code | Thickness of Interior Walls

9.20.6.3. Thickness of interior Walls

(1) The thickness of loadbearing interior walls shall be determined on the basis of the maximum lateral support spacing as provided in Sentences 9.20.10.1.(2) and (3).

(2) The thickness of interior non-loadbearing walls shall be,

(a) determined on the basis of the maximum lateral support spacing as provided in Sentences 9.20.10.1.(2) and (3), and

(b) in any case, not less than 65 mm.