Calculated Industries 4065 v3.1 Pocket Reference Guide Construction Master Pro - Manual (Page 29)

P
OCKET
R
EFERENCE
G
UIDE
— 25
KEYSTROKE DISPLAY
1. Use trigonometry formula (divide the
rise by the hypotenuse):
o o 0.
6 f ÷ 1 0 f = 0.6
2. Solve for angle or degrees:minutes:sec-
onds:
З з (cos -1 ) 53.13°
Ç • (dms deg) DMS 53.07.48
Common Rafter Length
Find the point-to-point length of the
Common rafter on a 7/12-pitched roof
with a span of 28 Feet. What are the
angle cuts?
KEYSTROKE DISPLAY
1. Enter Pitch:
o o 0.
7 i p PTCH 7
INCH
2. Enter half the span as the run:
2 8 f ÷ 2 = 14
FEET
0
INCH
R RUN 14
FEET
0
INCH
3. Find the Common and cuts:
d DIAG 16
FEET
2-1/2
INCH
d PLMB 30.26°
d LEVL 59.74°