Civil Engineering Reference
In-Depth Information
Problem 2.19
(
Ans. f
c
1374 psi,
f
s
32,611 psi)
3
"
15
2
"
20"
M
= 130 ft-k
n
= 8
2 #8
2 #8
2"
5"
5"
28"
"
2
2
Problem 2.20
2.22
Compute the allowable resisting moment of the
section shown using transformed area if
f
c
1600 psi,
f
s
24,000 psi, and
n
9.
s
f
15"
12"
2 #9
24"
1 #9
2"
3"
4"
2"
6"
10"
10"
M
= 90 ft-k
n
= 9
16"
3"
s
Problem 2.21
(
Ans. f
c
1406 psi;
16,886 psi;
f
s
f
36,217 psi)
"
2
2
2"
2 #9
4"
2"
4 #8
10"
32"
M
= 320 ft-k
n
= 9
1
2
26
4 #9
3"
18"
