Simply Supported Beam Stress Analysis

________________________________________________________________________
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
×
== =
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