Structural integrity of fir 6x6 beams
That looks rock solid. I wouldn't have any concerns about the 6x6, given the fact that it is just a roof structure. The rafters are overcut at the birdsmouths, but the only problem it could cause is some cracking/twisting at the heels. You should secure the heel of the cut to the beam pretty well.
The ridge is supported to the 6x6 that runs perpindicular to it. Are the ends of that 6x6 bearing on the posts or are they butted to the parallel beams supporting the rafter heels? There's some fair load there, and there needs to be some bearing at that point. Perhaps the angle brackets could be let into the post 1" and into the perpindicular 6x6 1", which would actually let the bracket do some structural work.
My only other concern would be the connection between the 6x6 posts and the horizontal structure. There can be a considerable amount of uplift. If they're only nailed or screwed, I'd consider having some 1/4" steel cut, drilled, and painted, and use it to make bolted connections between the two.
Last edited by Termite; 07-30-2008 at 11:49 PM.