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Using DEWALT RAFTER SQUARE (continued)
14) From the squared line across the top at the rafter at the bottom
plumb cut line, measure and mark 30
3
/4 inches (eave length). Square
this line across the top of the rafter, and mark another bottom plumb
cut line on the side of the rafter from this squared line.
15) Since the length at the hip rafter and valley rafter are
measured along the center line on top of the rafter, you can see that the
corners at the bottom end of the eave are not in the same plane as the
ends of the common rafters.
The cut-off length or the allowance for the mitre is half the
thickness of the hip rafter as illustrated below in plan view.
SEAT
30
3
/
4
IN
T
2
T
2
T
T
2
T
2
AS NMARKED CUT OFF
OVERHANG
PLATE
HIP RAFTER
MITRE
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