On Fri, 22 May 2009 11:13:18 -0700 (PDT), wrote:

Here is a silly question. I am planning on building a 12'x16' shed
with 1/2" OSB sheathing. When I build the frame, should the actual
dimensions be 12'x16' or should it be 1 inch less in each dimension to
account for the 1 inch of OSB? Thanks for the help.

What do your blueprints say?g

Keep in mind that when you go to sheath the roof life is easier if you
can use full sheets or trim them slightly. Sheathing a roof that is
8'4" x 16' 6" is a royal PITA.

I'm sure there are plans online that will eliminate a lot of re-doing
as you work.

Jim