Rafters
■
Chapter 6 67
KEYSTROKE DISPLAY
jT 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
AC
B
BABC
Rc
Rc
Rc
PcPh
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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