Published at Wednesday, 05 September 2018. Storage Shed. By Krystal Fry.
Here's the so there's a wake up for the ridge, and so that's at the angle that you want so yeah from from this angle. Right here is your angle of your roof that you're going to want 37 degrees, it's close to a 10 and 12 pitch, but not quite probably somewhere in between, and so that's for the ridge. And you go back down here and there is a cut for the bird's mouth and then this bird's mouth is so this line right here is the same angle as your Ridge cut over there or your plum cut. I've seen some people call it. So you get your your plumb cut here, which, when this rafter is up on the roof, it will be plumb.
I've got one one to go here. I just want to show you how I am cutting these and what the the anatomy of them is so you'll see. One of them is already up. So what I did is I measured well, I calculated what the measurements should be and then I went off of that and I got this piece of wood that I kept hacking up, because my calculations for for a perfect world with a perfect structure - and this is Not one of those so and then I started doubting myself. Maybe it's not the right angle, blah blah blah anyway, I eventually came up with a with a master that actually worked and that's what all these are based off of so you'll see the cuts here.
You want on your seat cut, and I use make a right angle and over here is the overhang, and that is also the plumb line. So when this rafter sitting up there, this will be straight up and down that cut will be straight up and down and all the way down there will be straight up and down up at the ridge. So that is the anatomy of my rafter to figure out exactly where you need to cut this. You need to do some calculations and then trial and error. I did more trial and error than calculations, but my calculations were close just a little bit off anyways.
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