© 2022 Johnson Level & Tool — 28
EXAMPLES
CONVERTING SLOPE
Find the Pitch in Inches, Pitch Degrees, and Percent Grade
if the Pitch Ratio/Slope is 0.325:
KEYSTROKE DISPLAY
On/C
On/C
0
•
3
2
5
Conv
Pitch
SLP 0.325
Pitch
PTCH 3-7/8 INCH
Pitch
PTCH 18.00°
Pitch
%GRD 32.5
COMMON RAFTER LENGTH
Find the Point-to-Point Length of the Common rafter on a
6/12-Pitched roof with a Span of 28 Feet:
KEYSTROKE DISPLAY
On/C
On/C
0
1. ENTER PITCH:
6
Inch
Pitch
PTCH 6 INCH
2. ENTER HALF THE SPAN AS THE RUN:
2
8
Feet
÷
2
=
14 FEET 0 INCH
Run
RUN 14 FEET 0 INCH
3. FIND THE RISE:
Rise
RISE 7 FEET
4. FIND THE LENGTH OF THE COMMON RAFTER:
Diag
DIAG 15 FEET 7-13/16 INCH
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