เหล็กตัวซี
TIS / JIS STANDARDS
(TIS 1227 : 1996 / JIS G3192 : 1990)
Size & Properties
เหล็กท่อดำ
Dimensions mm.
Sectional Area cm2
Weight kg./m.
Center of Gravity cm.
Secondary Moment of Area cm4
Radius of Gyration of Area cm.
Modulus of Section cm3
center of Shear cm.
H x A x C
t
cx
cy
lx
ly
ix
iy
zx
zy
sx
sy
250x75x25
4.5
18.92
14.9
0
2.07
1690
129
9.44
2.62
135
23.8
5.1
0
200x75x25
4.5
16.67
13.1
0
2.32
990
121
7.61
2.69
99
23.3
5.6
0
4
14.95
11.7
0
2.32
895
110
7.74
2.72
89.5
21.3
5.7
0
3.2
12.13
9.52
0
2.33
736
92.3
7.7
2.76
73.6
17.8
5.7
0
200x75x20
4.5
16.22
12.7
0
2.19
963
109
7.71
2.6
96.3
20.6
5.7
0
4
14.55
11.4
0
2.19
871
100
7.74
2.62
87.1
18.9
5.3
0
3.2
11.81
9.27
0
2.19
716
84.1
7.79
2.67
71.6
15.8
5.3
0
150x75x25
4.5
14.42
11.3
0
2.65
501
109
5.9
2.75
66.9
22.5
5.4
0
4
12.95
10.2
0
2.65
455
99.8
5.93
2.78
60.6
20.6
6.3
0
3.2
10.53
8.27
0
2.66
375
83.6
5.97
2.82
50
17.3
6.3
0
150x75x20
4.5
13.97
11
0
2.5
489
99.2
5.92
2.66
65.2
19.8
6.4
0
4
12.55
9.85
0
2.51
445
91
5.95
2.69
59.3
18.2
6
0
3.2
10.21
8.01
0
2.51
366
76.4
5.99
2.74
48.9
15.3
5.8
0
150x65x20
4
11.75
9.22
0
2.11
401
63.7
5.48
2.33
53.5
14.5
5.1
0
3.2
9.567
7.51
0
2.11
332
53.8
5.89
2.37
44.3
12.2
5
0
2.3
7.012
5.5
0
2.12
248
41.1
5.94
2.42
33
9.37
5.1
0
125x50x20
4.5
10.95
8.32
0
1.68
238
33.5
4.74
1.78
38
10
4
0
4
9.548
7.5
0
1.68
217
33.1
4.77
1.81
34.7
9.38
4
0
3.2
7.807
6.13
0
1.68
181
26.6
4.82
1.85
29
8.02
4
0
2.3
5.747
4.51
0
1.69
137
20.6
4.88
1.89
21.9
6.22
4.1
0
100x50x20
4.5
9.469
7.43
0
1.86
139
30.9
3.82
1.81
27.7
9.82
4.3
0
4
8.548
6.71
0
1.86
127
28.7
3.85
1.83
25.4
9.13
4.3
0
3.2
7.007
5.5
0
1.86
107
24.5
3.9
1.87
21.3
7.81
4.4
0
2.8
6.205
4.87
0
1.88
99.8
23.2
3.96
1.91
20
7.44
4.3
0
2.3
5.172
4.06
0
1.86
80.7
19
3.95
1.92
16
6.06
4.4
0
2
4.537
3.56
0
1.86
71.4
16.9
3.97
1.93
14.3
5.4
4.4
0
1.6
3.672
2.88
0
1.87
58.4
14
3.99
1.95
11.7
4.47
4.5
0
2.3
4.137
3.25
0
1.72
37.1
11.8
3
1.69
9.9
4.24
4
0
2
3.637
2.86
0
1.72
33
10.5
3.01
1.7
8.79
3.76
4
0
1.6
2.952
2.32
0
1.72
27.1
8.71
3.03
1.72
7.24
3.13
4.1
0

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