Johnson-level-tool-mfg RAS-1 Manuale Utente Scaricare il pdf (Pagina 17)

as you did in Step 1. You may wish to leave the tails long un-

til all the rafters are in place, so that you can mark the ends

to a line and then cut.

NOTE:Thetopandbottomcutsontherakeboardarealso

done in the same way as a common rafter but the distance

from the top cut to the bottom cut is the rake board length.

HIP AND VALLEY RAFTERS

The hip and valley rafters are treated very similarly because

bothrunata45°angletothecommonrafter,andthey

both form the diagonal or hypotenuse of a right triangle

(seeFigure8).Thethreesidesbeingthehip,plateand

common rafter, or the valley, ridge and common rafter.

Therefore, the cuts and lengths apply equally to hip and

valley rafters.

FIG. 8 Top View Rafter Deﬁnition.

FIG. 7A

Seat Notch or

Bird’s Mouth Layout.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 66 67

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Johnson-level-tool-mfg RAS-1 Manuale Utente Pagina 17