Calculates the length of the Common rafter. The Common rafter calculation is the "point-to-point" length and does not include the overhang or ridge adjustment.
1. If a roof has a 7/12 Pitch and a span of 14 Feet 4 Inches, what is the point-to-point length of the Common rafter (excluding the overhang or ridge adjustment)? What are the Plumb and Level cuts?
Keystroke
Display
[Clear] [Clear]
0.
7 [Inch] [Pitch]
Pitch 7 INCH
14 [Feet] 4 [Inch] [÷] 2 [=]
7 FEET - 2 INCH
[Run]
RUN 7 FEET - 2 INCH
[Diag]
Diagonal 8 FEET - 3 9/16 INCH
[Diag]
Plumb Cut 30.26°
[Diag]
Level Cut 59.74°
2. Find the Common rafter length for a roof with a rise of 6 Feet 11-1/2 Inches and a run of 14 Feet 6 Inches. Solve for the Pitch in Inches and in Degrees.