User Manual

36 — Construction Master IV
Common Rafter Length
— (Pitch Known)
The roof you are working on has a 7/12
Pitch, with a span of 23 feet 6 inches.
What length should you cut the Com-
mon rafters (not counting the overhang
or ridge adjustments)?
7/12 Pitch
23’ 6”
Keystroke Display
[On/C] [On/C] 0.
7 [Inch] [Pitch] PTCH 7 IN
23 [Feet] 6 [Inch] [÷] 2 [=] 11 FT 9 IN
[Run] RUN 11 FT 9 IN
[Diag] DIAG 13 FT 7-1/4 IN