I'm constructing a 15'x20' screened porch. I've completed work up to the footings, posts, ledger, and joists. I'm now ready to install 4x4 posts around the perimeter which will hold 2x4 bottom plate, two 2x8 to form the header beam, and a 2x4 top plate.
My question is two-fold. First, what is the best height of the posts for an open feel? I'm guessing 8' posts should work for a screened porch but I'm not sure if this is the industry standard or not.
Second, I'm not sure how to install the bottom plate and 2x8 header beam in the corner of the porch. When installing the main support posts and beams I was working with 6x6 posts and was able to notch them and place the beams in the notches. However, with the 4x4 posts for the roof I'm not going to have the adequate spacing for notching.
I have seen some examples where the corners will have two posts butted together so is can fully support the header beam coming from each direction. Not sure this is best or not.
I've searched all over for a diagram example but haven't been able to find one. Any help you can provide is appreciated.
This question is for rough framing that will be covered with finishing materials. I'm using Simpson strong ties for the post base and non-corner post tops. This framing is to support a gabled roof with a 4/12 pitch.