Civil Engineering Reference
In-Depth Information
Table 4-7 continued
h = 9 in.,
d = 7
3
/
4
in.
h = 9
1
/
2
in.,
d = 8
1
/
4
in.
h = 10 in.,
d = 8
3
/
4
in.
J/c =
J/c'
in.
3
J/c =
J/c'
in.
3
J/c =
J/c'
in.
3
COL.
SIZE
A
c
in.
2
c = c'
in.
A
c
in.
2
c = c'
in.
A
c
in.
2
c = c'
in.
10x10 550.3
3411
8.88
602.3
3851
9.13
656.3
4325
9.38
12x12 612.3
4186
9.88
668.3
4698
10.13
726.3
5247
10.38
14x14 674.3
5043
10.88
734.3
5633
11.13
796.3
6262
11.38
16x16 736.3
5984
11.88
800.3
6656
12.13
866.3
7370
12.38
18x18 798.3
7007
12.88
866.3
7767
13.13
936.3
8572
13.38
20x20 860.3
8112
13.88
932.3
8966
14.13
1006.3
9867
14.38
22x22 922.3
9301
14.88
998.3
10253 15.13
1076.3
11255 15.38
24x24 984.3
10572 15.88
1064.3
11628 16.13
1146.3
12737 16.38
Table 4-8 Properties of Critical Transfer Section—Edge Column—Bending Parallel to Edge
c
2
Concrete area of critical section:
A
c
= (b
1
+ 2b
2
)d
Modulus of critical section:
c
=
c'
= [b
1
d(b
1
+ 6b
2
) + d
3
]/6
where:
γ
v
M
c = c' = b
1
/2
b
2
= c
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.
h = 6
1
/
2
in.,
d = 5
1
/
4
in.
J/c =
J/c'
in.
3
J/c =
J/c'
in.
3
J/c =
J/c'
in.
3
J/c =
J/c'
in.
3
COL.
SIZE
A
c
in.
2
c = c'
in.
A
c
in.
2
c = c'
in.
A
c
in.
2
c = c'
in.
A
c
in.
2
c = c'
in.
10x10
140.6
739
6.88
163.6
891
7.13
187.6
1057
7.38
212.6
1238
7.63
12x12
163.1
983
7.88
189.1
1175
8.13
216.1
1384
8.38
244.1
1609
8.63
14x14
185.6
1262
8.88
214.6
1499
9.13
244.6
1755
9.38
275.6
2029
9.63
16x16 208.1
1576
9.88 240.1
1863
10.13
273.1
2170
10.38
307.1
2497
10.63
18x18 230.6
1926
10.88
265.6
2267
11.13
301.6
2629
11.38
338.6
3015
11.63
20x20 253.1
2310
11.88
291.1
2710
12.13
330.1
3133
12.38
370.1
3581
12.63
22x22 275.6
2729
12.88
316.6
3192
13.13
358.6
3681
13.38
401.6
4197
13.63
24x24 298.1
3183
13.88
342.1
3715
14.13
387.1
4274
14.38
433.1
4861
14.63
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