Sample
Rafters
■
Chapter 6
67
KEYSTROKE
DISPLAY
j
T
JKOC 16 INCH
j
INCR 1 FEET 8 INCH
This is followed by the lengths of each jack rafter, then by the plumb cut,
level cut, and cheek cut angles:
j
JK 1 18 FEET 9 INCH
j
JK 2 17 FEET 1 INCH
j
JK 3 15 FEET 5 INCH
j
JK 4 13 FEET 9 INCH
j
JK 5 12 FEET 1 INCH
j
JK 6 10 FEET 5 INCH
j
JK 7 8 FEET 9 INCH
j
JK 8 7 FEET 1 INCH
j
JK 9 5 FEET 5 INCH
j
JK 10 3 FEET 9 INCH
Notes
Copyright © 2007 by Calculated Industries, Inc.
and Thomson Delmar Learning
Construction Master® Pro Workbook and Study Guide
d
⫽
1.414 Rc
Common
(b)
(c)
D
A
C
B
B
A
B
C
Rc
Rc
Rc
Pc
Ph
Ri
Ri
d
⫽
1.414 Rc
D
(a)
Hip
45°
45°
Figure 6-6
Calculator Tip
Ascending Jacks:
Jack
lengths can be set to
display in ascending
order; see
Setting
Preferences
in User’s
Guide for more details.
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