If you want the outer dimensions to be exactly 11X16 then yes you need to frame it to account for the sheathing thickness. Is the sheathing also the outer wall finish?
Quick question for your framing experts...
If I am building a 11x16 shed, would the 11x16 include the 1/2" sheathing? So actual 2x4 bottom/top plate would be 10' 11" and 15' 11"?
You're building a shed. You can build it however you want. Not sure what this has to do with framing.
Traditional methods of referring to the building would be the "footprint", which would NOT include the sheathing/siding/etc.
