Multi pitch roof framing

[Rich]

Another FYI for everyone. I ran across this spreadsheet about 6 years ago now. I used the formulas from it to create my rafter angle calculator. What it does that my calculator doesn't do is figure angles for different pitch hips and dormers for supporting valleys. It's a bit complicated when you first look at it - but once you know what the variables are representing it's pretty simple.
http://www.tfguild.org/tool2.html