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Using DEWALT RAFTER SQUARE (continued)
12) Compensation must now be made for the thickness of the hip
or valley rafter in the length of the jack rafter, just as was done for the
hip and valley rafter to compensate for the thickness of the ridge board.
Mark another plumb cut line 1
1
/16 inch from and parallel to the original
plumb cut mark made in Step 1) above. (The 1
1
/16 inch dimension being
half the diagonal thickness of the hip or valley rafter).s
13) From the top of this plumb line, mark a line across the top of
the rafter parallel to the side cut mark made in Step No. 6). These last
side and plumb cut marks are the marks on which the rafter will be cut.
Cutting along this plumb cut line with a portable electric circular saw
set at 45 degrees, will result in the correct side cut angle.
1
1
/16”
1 1/16 IN
VALLEY JACK RAFTER
1
3
/4”
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