Pictures 2 & 5 look the most informative to me but I'm still not entirely sure about the set-up.
- Is that 2x4 wall supposed to be supporting the 2x12 intermediate ridge beam? I guess if they sit on top of a load b. wall and are nailed together it will work.
- Are you thinking the short jack rafter runs are original rafters that they cut, then added the 2x12 and longer rafters for the bump out?
- Or do you think Stanley ordered the rafters too short and added on.
That sort of rafter set-up is common when doing a shed dormer bump out. The lack of proper support at either end of the 2x12 is worrisome. I would prefer to see an LVL. It isn't clear how long the span is. I agree with Jerry about the lack of collar ties or purlins. The set-up really lives the roof structure susceptible to movement during high winds or snow loads.

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