42 — Construction Master IV
Common Rafter— (Pitch Unknown)
You’re unsure of the roof pitch but
know the Rise is 6 feet 11-1/2 inches
and the Run is 14 feet 6 inches. Find
the Common rafter length. Then solve
for the Pitch.
Keystroke Display
[On/C] [On/C]
0.
Find Diagonal & Pitch
6 [Feet] 11 [Inch] 1 [ / ] 2
[Rise]
RISE 6 FT 11-1/2 IN
14 [Feet] 6 [Inch] [Run]
RUN 14 FT 6 IN
[Diag]
DIAG 16 FT 1 IN
[Pitch]
PTCH 25.63565°
[Pitch]
PTCH 5-3/4 IN
Note: If the Pitch is displayed in de-
grees, just press [Pitch] again to dis-
play the rise per unit run value.
