I’m looking to find a fast way to find the angle on an irregular valley rafter. I have a 14/12 that is tying back into an 8/12. Both of these roofs are dimensional lumber with an open space below, so cheating and laying the 14 on the 8 is not an option. If anyone has a technique that can be easily accomplished with a framing square I would appreciate the input.
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If your talking about the plumbcut angle on the valley it's 30.06°.
There's alot of ways with a calculator (Construction Master) but if you don't use one there's a good article about this just using a Framing square from Joe Fusco in the April issue of JLC.
http://www.jlconline.com/cgi-bin/jlconline.storefront/3eaf2a5d0011db86271b401e1d290615/UserTemplate/82?s=3eaf2a5d0011db86271b401e1d290615&c=74f3860f6538f4f515ecc5b3caca8d7c&p=1
Hope this helps.
Joe Carola
Thanks for the article. I had the angle, I just don't always trust the calculator. The framing square is my best friend and I trust her more than something that requires batteries.
I second Framer's advice. The pics are very well layed out and will make it very simple for you to understand what is going on and how to frame it fast and clean.
One suggestion I can make ( and framer will agree) is if you can justify it's use, buy the Bigfoot saw with a swingtable. It makes octagons and bastard roofs easy and accurate to cut and you'll have a beam saw too. http://www.bigfoottools.com