Civil Engineering Reference
In-Depth Information
Table 4-10 Properties of Critical Transfer Section—Corner Column
c
2
Concrete area of critical section:
A
c
= (b
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
+
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.
3
c
in.
c'
in.
10x10
89.1
458
153
2.97
8.91
103.1
546
182
3.03
9.09
117.6
642
214
3.09
9.28
12x12
104.1
619
206
3.47
10.41
120.1
732
244
3.53
10.59
136.6
854
285
3.59
10.78
14x14
119.1
805
268
3.97
11.91
137.1
946
315
4.03
12.09
155.6
1097
366
4.09
12.28
16x16
134.1
1016
339
4.47
13.41
154.1
1189
396
4.53
13.59
174.6
1372
457
4.59
13.78
18x18
149.1
1252
417
4.97
14.91
171.1
1460
487
5.03
15.09
193.6
1679
560
5.09
15.28
20x20
164.1
1513
504
5.47
16.41
188.1
1759
586
5.53
16.59
212.6
2017
672
5.59
16.78
22x22
179.1
1799
600
5.97
17.91
205.1
2087
696
6.03
18.09
231.6
2388
796
6.09
18.28
24x24
194.1
2110
703
6.47
19.41
222.1
2443
814
6.53
19.59
250.6
2789
930
6.59
19.78
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
132.6
746
249
3.16
9.47
148.1
858
286
3.22
9.66
164.1
979
326
3.28
9.84
12x12
153.6
984
328
3.66
10.97
171.1
1124
375
3.72
11.16
189.1
1273
424
3.78
11.34
14x14
174.6
1257
419
4.16
12.47
194.1
1428
476
4.22
12.66
124.1
1609
536
4.28
12.84
16x16
195.6
1566
522
4.66
13.97
217.1
1770
590
4.72
14.16
239.1
1986
662
4.78
14.34
18x18
216.6
1909
636
5.16
15.47
240.1
2151
717
5.22
15.66
264.1
2406
802
5.28
15.84
20x20
237.6
2288
763
5.66
16.97
263.1
2571
857
5.72
17.16
289.1
2867
956
5.78
17.34
22x22
258.6
2701
900
6.16
18.47
286.1
3028
1009
6.22
18.66
314.1
3369
1123
6.28
18.84
24x24
279.6
3150
1050
6.66
19.97
309.1
3524
1175
6.72
20.16
339.1
3913
1304
6.78
20.34
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