back cut on a 10/12 pitch?
I forgot the conversoins
I know you can do it with your square
QED?
It’s been a LONG time since I’ve done any rough carpentry but…
I understand the 10/12 part, enlighten me on what you mean by “back cut” (like I said it’s been a LONG time).
When you stick-frame roof rafters you cut the bottoms (tails) on 10/12’s.
Then there’s a conversion on your square to cut the tops at the corrrect angle.
Tony, all the links I’ve checked are for books on conversions. I was motivated because I wanted to build a shed with 10/12 so I have a roof to run rafters under and store stuff in the roof space.
10/12 is a steep pitch, right?
I’ll be back.
40 degrees. (?)
see http://www.woodtruss.com/faqanswers/simpsonconversionchart.pdf
angle = tan[sup]-1[/sup] (10/12)
= 39.8 degrees.
Old framer here. You can also square-cut the tails, as on my house. Are you matching existing?
And do you own a speed-square? I find them quicker than framing squares and for stick-framing rafters they’re sufficiently accurate. Or you can get a rafter tits on and use it as a template. Templates are always a good idea.
This all may be of no help or beneath your skills, but you never know…
Nothing is beneath my skills!
Ok some self-depracting(sp?) humor there.
I’m building a shed (thus the steep pitch)
Yes on the speed square, I was taught you look at the square at the “common” cuts,it lines up with 40deg mark.
Then, you add 90?
For the back-cut that is…