simple framing question
I'm trying to follow your description of what you did, and what the problem was.
I think this is the gist of your post: You built a storage shelf system in a garage. It is approximately 6' wide, by 12' long. You installed the shelf's joists at 16" On Center.
However, when you laid your first sheet of plywood, it did not fall properly on the joist that is at the end of the 8' plwood sheet.
If that is the case, then this is my response: You should have measured 16 -3/4" off the first end joist (rim joist), to mark the location of the next joist's center.
Example: If you laid your 4x8 sheet of plywood onto a floor, you want the end of the plywood to be able to seat 1/2 way on the last 2x4 joist, so that you can lay your next sheet of plywood, onto the other half of that 2x4 joist. If your sheet of pywood is 96" long, then that end 2x4 joist's center, should be at 96 -3/4".
So, you had your starting joist (rim joist) set in place, your first O.C. mark (for the next joist) should have been at 16-3/4". Then you would pull all you consecutive joists centers off that one. Thus, your 16" increments land at the halfway mark of each 2x4 joist.
- Build Well -