Thanks a lot for your advice everyone.
Mark,
I was in a barn in Kemptville last weekend and it looked a lot like the picture you attached. The only difference was that the two posts that go up to the perlin plates had a tie beam between them. This made sense to me since the roof rafters are trying to push the perlin plates out as well as the wall plates. Someone had cut out the tie beam and the pressure from the roof and snow load had pushed the wall plates such that they had twisted up and were no longer sitting flat on the outer bent posts. You could see that the perlin posts had tipped out. The design that you show has braces down to the main cross tie beam to prevent this I guess. This barn I looked at also had offset center posts to provide more open space on one side of the barn. Quite similar to yours with slight variations.
Warsaw is about a 3 hour drive from me. Are the classes held on the weekend?
Steve.
