Cut three plates, your bottom, and your double top. One plate on each end will have a 3 and 1/2 in overlap. Measure layout from outside corner, not the inside. So, we overlap our furthest plate 3 and 1/2. Line the other plates up and pull it to center layout. Now, we mark 3/4 on each side. You don't have to do three, but if your rafter sits on here, it does help. Then, you'll mark and cut your studs. A two-stud or insulated corner gets attached like this, so you can pack insulation on this side. Now, you'll spread out your plates, crown your studs in the same direction, and nail through your plates. Your top plate and sheathing can get installed now, but that's up to you. Before lifting your wall, you'll either strap or nail your bottom plate down, and then stand your wall up. Top plate seams need to land above studs. When nailing top plates, you want to nail above studs. Overlap corners lock in, and gets three nails. Before you install any sheathing standing up, you want to be sure that your structure is plumb. And if you do it on the ground, you can check corner to corner to square your walls before you lift them. To figure your stud length, you'll take your finish height and subtract 3 and 3/8. So, if you want 8-ft ceilings, do 96 - 3 and 3/8 and get 92 and 5/8. This gives room for drywall on the ceiling and space for two 8-ft sheets to not hit the ground. Depending on floor height, amount of plates, and drywall material, this number could change. For your rafters, the full measurement outside to outside, and we get 40. We'll split the measurement in half, and we get 20. And then, we subtract half the ridge beam. And this will give us 19 and a quarter for our run. Our rise will be a 6/12, but can be any number you choose. When we put the run and pitch in a calculator, it'll show our rafter length is 21 and 1/2. So, regardless if this goes up and down, this measurement does not change. The only thing that could change is the height of your seat cut. But typically, this will be the width of your wall. I'll take the square and lock it on the pivot point, bring this down to six. This is the common, so you're looking for six here. As you see, we line up perfectly. Now we'll make a mark. This gets cut. Now we'll pull a measurement down to 21 and 1/2. Pull this down and make another mark. Then we can make a 4-in measurement this way. Then flip the square over, line this up, and make your mark. This cut needs to be below 1/3. So in this case, I just make it. Now you set your rafters. You can measure out to make plumb cuts, and then install your sheeting. Thanks for watching.
