| jdtsmith,
Like everybody else, I LOVE your detailed drawings. We can "SEE" what you are talking about. We'll ALL have to figure this one out!!
By "Skewable", Simpson is usually talking about being able to change the angle of the underside of the hanger to compensate for variations in the rise and run of the steps. Where your stair stringers are perpendicular to the facia, that works. But where your stringers meet at the 45's of the facias, I would suggest just using a side plate (Simpson LS50, LS 70. or LS90) that is skewable to the side and installing a block UNDER the stringer to keep it from settling down.
You have a good design, you doing everything right, and you were clever enough to figure out the Google Sketchup tool to post the drawings. Building the deck and looking at things as you go to find the strongest way to assemble it shouldn't be a problem for you.
One area wher you are going to have to get creative again will be where the 45 degree angle occurs on the stair treads. At the top it's not a problem. Your stringers will be really colse to the 45 degree corner. But as you go down, the span of the deck board on the tread is going to increase. You may have to set a post where the 22-1/2 degree angles and start the process all over again, or incorporate some sort of bracing to keep the tread boards from becoming overspanned.
You'll just have to look at it as you are building it and do what I do -- see issues as they arise BEFORE the boards are attached and get creative enough to say "let's do 'this' to prevent 'that' from becoming a problem". Posts, bracing, slocking, all-thread, getting creative with Simpson products, ... whatever it takes to make it solid and stable.  |