Civil Engineering Reference
In-Depth Information
Table 4-9 Properties of Critical Transfer Section—Edge Column—Bending Perpendicular to Edge
c
2
Concrete area of critical section:
A
c
= (2b
1
+ b
2
)d
Modulus of critical section:
c
= [2b
1
d(b
1
+ 2b
2
) + d
3
(2b
1
+ b
2
)/b
1
]/6
c'
= [2b
1
2
d(b
1
+ 2b
2
) + d
3
(2b
1
+ b
2
)]/6(b
1
+ b
2
)
where:
γ
v
M
c = b
1
2
/(2b
1
+ b
2
)
c' = b
1
(b
1
+ b
2
)/(2b
1
+ b
2
)
b
2
= c
2
+2
d
/
2
h = 5 in.,
d = 3
3
/
4
in.
h = 5
1
/
2
in.,
d = 4
1
/
4
in.
h = 6 in.,
d = 4
3
/
4
in.
COL.
SIZE
A
c
in.
2
J/c
in.
3
J/c'
in.
3
c
in.
c'
in.
A
c
in.
2
J/c
in.
3
J/c'
in.
3
c
in.
c'
in.
A
c
in.
2
J/c
in.
3
J/c'
in.
c
in.
c'
in.
3
10x10
140.6
612
284
3.76
8.11
163.6
738
339
3.82
8.31
187.6
878
400
3.88
8.50
12x12
163.1
815
381
4.43
9.45
189.1
973
453
4.48
9.64
216.1
1146
529
4.54
9.83
14x14
185.6
1047
494
5.09
10.78
214.6
1242
583
5.15
10.98
244.6
1453
677
5.21
11.17
16x16
208.1
1309
622
5.76
12.12
240.1
1545
730
5.81
12.31
273.1
1798
844
5.87
12.50
18x18
230.6
1602
765
6.42
13.45
265.6
1882
894
6.48
13.64
301.6
2181
1030
6.54
13.84
20x20
253.1
1924
923
7.09
14.79
291.1
2253
1075
7.15
14.98
330.1
2602
1235
7.20
15.17
22x22
275.6
2277
1095
7.76
16.12
316.6
2658
1273
7.81
16.31
358.6
3061
1459
7.87
16.51
24x24
298.1
2659
1283
8.42
17.45
342.1
3097
1488
8.48
17.65
387.1
3558
1702
8.54
17.84
h = 6
1
/
2
in.,
d = 5
1
/
4
in.
h = 7 in.,
d = 5
3
/
4
in.
h = 7
1
/
2
in.,
d = 6
1
/
4
in.
COL.
SIZE
A
c
in.
2
J/c
in.
3
J/c'
in.
3
c
in.
c'
in.
A
c
in.
2
J/c
in.
3
J/c'
in.
3
c
in.
c'
in.
A
c
in.
2
J/c
in.
3
J/c'
in.
3
c
in.
c'
in.
10x10
212.6
1030
467
3.94
8.69
238.6
1197
538
3.99
8.88
265.6
1379
616
4.05
9.07
12x12
244.1
1334
612
4.60
10.03
273.1
1537
701
4.66
10.22
303.1
1757
796
4.72
10.41
14x14
275.6
1680
779
5.26
11.36
307.6
1924
886
5.32
11.55
340.6
2185
1001
5.38
11.74
16x16
307.1
2068
966
5.93
12.70
342.1
23.56
1095
5.99
12.89
378.1
2664
1231
6.05
13.08
18x18
338.6
2498
1174
6.60
14.03
376.6
2835
1326
6.65
14.22
415.6
3192
1486
6.71
14.41
20x20
370.1
2970
1404
7.26
15.36
411.1
3360
1581
7.32
15.56
453.1
3771
1766
7.38
15.75
22x22
401.6
3485
1654
7.93
16.70
445.6
3931
1858
7.98
16.89
490.6
4400
2071
8.04
17.08
24x24
433.1
4041
1926
8.59
18.03
480.1
4548
2158
8.65
18.23
528.1
5078
2401
8.71
18.42
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