Civil Engineering Reference
In-Depth Information
2.9
Repeat Problem 2.8 if four #6 bars are used. (
Ans.
f
c
1450 psi,
f
s
30,976 psi)
Problem 2.10
Problem 2.11
(
Ans. f
c
1258 psi,
f
s
12,889 psi)
18"
24"
6 #9
3"
3"
24"
30"
8 #8
14"
M
= 110 ft-k
n
= 8
3"
3"
M =
130 ft-k
n =
8
18"
Problem 2.12
n =
10
1
2
21 "
2 k/ft (including beam weight)
24"
4 #8
1
2
24'
2 "
12"
Problem 2.13
(
Ans. f
c
2369 psi,
f
s
32,574 psi)
30
k
2 k/ft (including beam weight)
n
= 8
28"
32"
10'
6 #9
20'
30'
4"
16"
