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iCheck my rafter calculations?
I've a 10' x 6' shed with 7/16" sheathing on all sides. I'm putting on a gable roof with a ridge board. The gable gable ends are on 10' sides.
so my building width: 120.875"
ridge board thickness: 1.5" (it's 2x8 nominal)
pitch: 12/12
my rafters are 2x6 nominal, 8' length
**Question 1 I think the correct seat cut length is 3.9375", s that good?**
I screwed up my first pattern board for my common rafter by not accounting for the sheathing.
I don't want to make another mistake with much more rain inbound this week.
I want as long as an overhang as possible, therefore I'm making a 45 degree cut as close to the edge of the rafter boards where they'll interface with the ridge board.
Identifying where to cut the birdsmouth is I guess my real challenge and where I'm struggling.
From the very edge of the top of cut board I'm measuring 84 13/32" down, marking that point, drawing a plumb line (which is 45 degrees) down. Along that line I'm finding the perpendicular, level, line which is the length of the seat cut. **Question 2 - is that length correct?** and method ok?
#diy
source
I've a 10' x 6' shed with 7/16" sheathing on all sides. I'm putting on a gable roof with a ridge board. The gable gable ends are on 10' sides.
so my building width: 120.875"
ridge board thickness: 1.5" (it's 2x8 nominal)
pitch: 12/12
my rafters are 2x6 nominal, 8' length
**Question 1 I think the correct seat cut length is 3.9375", s that good?**
I screwed up my first pattern board for my common rafter by not accounting for the sheathing.
I don't want to make another mistake with much more rain inbound this week.
I want as long as an overhang as possible, therefore I'm making a 45 degree cut as close to the edge of the rafter boards where they'll interface with the ridge board.
Identifying where to cut the birdsmouth is I guess my real challenge and where I'm struggling.
From the very edge of the top of cut board I'm measuring 84 13/32" down, marking that point, drawing a plumb line (which is 45 degrees) down. Along that line I'm finding the perpendicular, level, line which is the length of the seat cut. **Question 2 - is that length correct?** and method ok?
#diy
source
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