_______________________________________________________________________
PROBLEM (9.50) For the bracket of b by h rectangular cross section, loaded as shown in Fig. P9.50,
determine:
(a) The maximum normal stress.
(b) The location of the neutral axis.
Given: P = 8 kips, b = 1in., h = 4 in.
SOLUTION
3
24
1(4)
1(4) 4 . 5.33 .
12
Abh in I in== = = =
.16)2(1088 3inkipMkipsP ⋅=×==
(a) At the top fibers:
33
810 1610(2)
45.33
tPMc
AI
σ
××
=− = −
ksi462 −=−=
At the bottom fibers:
ksi
b862 =+=
σ
(b) Equation (9.13):
3
316 10
0210 5.33 n
y
×
=× −
.667.0 inyn=
x
y
n
σ
b
N
.A
σ
t
Excerpts from this work may be reproduced by instructors for distribution on a not-for-profit basis for testing or
instructional purposes only to students enrolled in courses for which the textbook has been adopted. Any other
reproduction or translation of this work beyond that permitted by Sections 107 or 108 of the 1976 United States
Copyright Act without the permission of the copyright owner is unlawful.
1
/
1
100%