POCKET REFERENCE GUIDE — 29
Common Rafter Length
Find the point-to-point length of the com-
mon rafter on a 7/12-pitched roof with a
span of 28 feet. What are the angle cuts?
KEYSTROKE DISPLAY
o o 0.
1. Enter pitch:
7 i p PTCH 7 INCH
2. Enter half the span as the run:
2 8 f ÷ 2 = 14 FEET 0 INCH
R X 14 FEET 0 INCH
3. Find the Common and cuts:
d R 16 FEET 2-1/2 INCH
d PLMB 30.25644°
d LEVL 59.74356°
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