TCVN 1656 - 85
Nominal Size
Sectional Dimension
Section Area
Unit Weight
Center of Gravity
Moment of Inertia
Radius of Gyration
Modulus of Section
H X B
t
r1
r2
A
W
Cx=Cy
Ix=Iy
Iu
Iv
ix=iy
iu
iv
Sx=Sy
mm
cm2
kg/m
cm
cm4
cm3
20x20
0.280
25x25
0.448
30x30
0.661
40x40
1.21
1.56
1.91
45x45
1.54
2
2.46
50x50
1.86
2.49
3.08
60x60
3.66
4.52
5.24
63x63
-
65x65
5.36
6.26
7.96
70x70
6.23
7.33
8.43
75x75
7.13
8.47
9.67
11
12.1
80x80
9.7
11.12
12.6
90x90
12.3
14.2
16.0
17.65
100x100
17.7
19.86
24.4
29.1
JIS G3192 - 1990
120x120
29.5
36.0
125x125
130x130
38.7
42.8
49.9
61.5
150x150
57.3
68.1
82.6
103
175x175
91.8
114
200x200
150
162
197
242
250x250
388
519