Sample
Rafters
■
Chapter 6
61
For each set of conditions listed above, it is a simple procedure to also find
the angles required for plumb cuts and level cuts. Examples 6.1 and 6.2
demonstrated the procedure for case (1.) above in which the rise and run of
a rafter are already known. The following examples demonstrate cases (2.)
and (3.) respectively.
■
EXAMPLE 6.3
Calculate the run, length, plumb angle, and level angle for a common rafter
having the following characteristics. (a) Pitch of 5-1/2
⬙
, rise of 6
⬘
-4
⬙
(b) Pitch of 30.5
°
, rise of 7
⬘
-2
⬙
.
Solution:
KEYSTROKE
DISPLAY
(a) Enter the specified conditions as follows:
5 i 1 / 2 p
PTCH 5-1/2 INCH
Notes
Copyright © 2007 by Calculated Industries, Inc.
and Thomson Delmar Learning
Construction Master® Pro Workbook and Study Guide
A
B
A
A
A
⫽
Plumb cut angle (PLMB)
B
⫽
Level cut angle (LEVL)
Figure 6-2 (Not to scale)
Summary of Contents for Construction Master Pro
Page 1: ...S a m p l e...
