Please no discussion about black diamonds, cubits, hostile corporate takeovers etc.
I am considering 19.2 o.c. spacing for less thermal bridging. 24 is too far for the floor and roof joists structurally. 19.2 works well for all components structurally. I intend to use a single top plate and line everything up. 2×6 walls, 2×10 rafters, 9-1/2″ TJI 230 floor joists. I like less pieces, energy savings and more room to work between joists for running utilities. What other subtle things may come up? My only experience is 16″ o.c.
For example, OSB on the walls will need to be run horizontally which is weak axis (right?). I hang the sheets off the bottom to grab the foundation sill plate, so I’ll be filling in the top part later anyway. I can anticipate an odd cut to stagger the 3 levels of wall sheathing. Should I anticipate any unusual requirements with regards to the sheetrock? Usually an offcut is required for interior framing anyway; the room layout will have more to do with waste than the spacing of framing. The roof deck and floor deck are rated to 24″ and will be plenty stiff for the loads imposed. What am I missing?