________________________________________________________________________
PROBLEM (7.94) Redo Prob. 7.93, given that the beam is simply supported.
SOLUTION
Maximum moment occurs at midspan:
22
max 1 1 0.15
( )(5 12) 5.625 .
8812
M
wL kip in== ×= ⋅
From solution of Prob. 7.93:
4
20 1268.9 .
t
nI==in
Thus,
3
max 5.625 10 (5)
( ) 22.17
1268.9
wt
Mc
p
si
I
σ
×
== =
3
max 20(5.625 10 )(5.125)
( ) 454
1268.9
st
nMc
p
si
I
σ
×
== =
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%