Civil Engineering Reference
In-Depth Information
Figure 8.16
The theoretical spacings at various points in the beam are computed in the following table.
Theoretical
V
s
V
u
V
c
spacing required
V
u
Distance from
A
v
f
y
d
V
s
support (ft.)
(lbs.)
(lbs.)
s
(in.)
0 to
d
1.67
61,333
59,868
4.41
max
2
60,000
58,091
4.54
max
4
52,000
47,424
5
max
6
44,000
36,757
7.18
max
6
24,000
10,091
10
max
A summary of the results of the preceding calculations is shown in Figure 8.17, where the solid
dark line represents the maximum stirrup spacings permitted by the Code and the dashed line repre-
sents the calculated theoretical spacings required for
V
u
V
c
.
From this information the author selected the following spacings:
1 @ 3 in.
3 in.
17 @ 4 in.
68 in.
5 @ 10 in.
50 in.
121 in.
symmetrical about
L
