ELEMENTS OF SECTION

Rectangular Tubing

DIMENSIONS
PROPERTIES
Nominal*
Size
Wall
Thickness
Weight
per
Foot
Area
X – X AXIS
Y – Y AXIS
的时刻
Inertia
(1) In.4
Section
Modules
(S) In.3.
Radius of
Gyration
(r) In.
的时刻
Inertia
(1) In.4
Section
Modules
(S) In.3.
Radius of
Gyration
(r) In.
Inch
Inch
Lb.
Inch2
Inch4
Inch3.
Inch
Inch4
Inch3.
Inch
3.x 2
0.2500 1/4
7.11
2.09
2.21
1.47
1.03
1.15
1.15
0.742
0.1875 3/16
5.59
1.64
1.86
1.24
1.06
0.977
0.977
0.771
4 x 2
0.3125 5/16
10.58
3..11
5.32
2.66
1.31
1.71
1.71
0.743
0.2500 1/4
8.81
2.59
4.69
2.35
1.35
1.54
1.54
0.770
0.1875 3/16
6.87
2.02
3..87
1.93
1.38
1.29
1.29
0.798
4 x 3
0.3125 5/16
12.70
3..73
7.45
3..72
1.41
4.71
3..14
1.12
0.2500 1/4
10.51
3..09
6.45
3..23
1.45
4.10
2.74
1.15
0.1875 3/16
8.15
2.39
5.23
2.62
1.48
3..34
2.23
1.18
5 x 2
0.3125 5/16
12.70
3..73
9.74
3..90
1.62
2.16
2.16
0.762
0.2500 1/4
10.51
3..09
8.48
3..39
1.66
1.92
1.92
0.789
0.1875 3/16
8.15
2.39
6.89
2.75
1.70
1.60
1.60
0.816
5 x 3
0.3750 3/8
17.27
5.08
14.7
5.89
1.70
6.48
4.32
1.13
0.3125 5/16
14.83
4.36
13.2
5.27
1.74
5.85
3..90
1.16
0.2500 1/4
12.21
3..59
11.3
4.52
1.77
5.05
3..37
1.19
0.1875 3/16
9.42
2.77
9.06
3..62
1.81
4.08
2.72
1.21
5 x 4
0.3750 3/8
19.82
5.83
18.7
7.50
1.79
13.2
6.58
1.50
0.3125 5/16
16.96
4.98
16.6
6.65
1.83
11.7
5.85
1.53
0.2500 1/4
13.91
4.09
14.1
5.65
1.86
9.98
4.99
1.56
0.1875 3/16
10.70
3..14
11.2
4.49
1.89
7.96
3..98
1.59
6 x 2
0.3750 3/8
17.27
5.08
17.8
5.94
1.87
2.84
2.84
0.748
0.3125 5/16
14.83
4.36
16.0
5.34
1.92
2.62
2.62
0.775
0.2500 1/4
12.21
3..59
13.8
4.60
1.96
2.31
2.31
0.802
0.1875 3/16
9.42
2.77
11.1
3..70
2.00
1.90
1.90
0.829
6 x 3
0.3750 3/8
19.82
5.83
23.8
7.92
2.02
7.78
5.19
1.16
0.3125 5/16
16.96
4.98
21.1
7.03
2.06
6.98
4.65
1.18
0.2500 1/4
13.91
4.09
17.9
5.98
2.09
6.00
4.00
1.21
0.1875 3/16
10.70
3..14
14.3
4.76
2.13
4.83
3..22
1.24

*Outside dimensions across flat sides.

ELEMENTS OF SECTION

Rectangular Tubing

DIMENSIONS
PROPERTIES
Nominal*
Size
Wall
Thickness
Weight
per
Foot
Area
X – X AXIS
Y – Y AXIS
的时刻
Inertia
(1) In.4
Section
Modules
(S) In.3.
Radius of
Gyration
(r) In.
的时刻
Inertia
(1) In.4
Section
Modules
(S) In.3.
Radius of
Gyration
(r) In.
Inch
Inch
Lb.
Inch2
Inch4
Inch3.
Inch
Inch4
Inch3.
Inch
6 x 4
0.5000 1/2
28.43
8.36
3.5.3
11.8
2.06
18.4
9.21
1.48
0.3750 3/8
22.37
6.58
29.7
9.90
2.13
15.6
7.82
1.54
0.3125 5/16
19.08
5.61
26.2
8.72
2.16
13.8
6.92
1.57
0.2500 1/4
15.62
4.59
22.1
7.36
2.19
11.7
5.87
1.60
0.1875 3/16
11.97
3..52
17.4
5.81
2.23
9.32
4.66
1.63
6 x 5
0.3750 3/8
24.93
7.33
3.5.6
11.9
2.21
26.8
10.7
1.91
0.3125 5/16
21.21
6.23
3.1.2
10.4
2.24
23.5
9.40
1.94
0.2500 1/4
17.32
5.09
26.2
8.74
2.27
19.8
7.91
1.97
0.1875 3/16
13.25
3..89
20.6
6.87
2.30
15.6
6.23
2.00
7 x 3
0.3750 3/8
22.37
6.58
3.5.7
10.2
2.33
9.08
6.05
1.18
0.3125 5/16
19.08
5.61
3.1.5
9.00
2.37
8.11
5.41
1.20
0.2500 1/4
15.62
4.59
26.6
7.61
2.41
6.95
4.63
1.23
0.1875 3/16
11.97
3..52
21.1
6.02
2.45
5.57
3..71
1.26
7 x 4
0.3750 3/8
24.93
7.33
44.0
12.6
2.45
18.1
9.06
1.57
0.3125 5/16
21.21
6.23
3.8.5
11.0
2.49
16.0
7.98
1.60
0.2500 1/4
17.32
5.09
3.2.3
9.23
2.52
13.5
6.75
1.63
0.1875 3/16
13.25
3..89
25.4
7.26
2.55
10.7
5.34
1.66
7 x 5
0.5000 1/2
3.5.24
10.4
63.5
18.1
2.48
3.7.2
14.9
1.90
0.3750 3/8
27.48
8.08
52.2
14.9
2.54
3.0.8
12.3
1.95
0.3125 5/16
23.34
6.86
45.5
13.0
2.58
26.9
10.8
1.98
0.2500 1/4
19.02
5.59
3.8.0
10.9
2.61
22.6
9.04
2.01
0.1875 3/16
14.53
4.27
29.8
8.5
2.64
17.7
7.10
2.04
8 x 2
0.3750 3/8
22.37
6.58
40.1
10.0
2.47
3..85
3..85
0.765
0.3125 5/16
19.08
5.61
3.5.5
8.87
2.51
3..52
3..52
0.792
0.2500 1/4
15.62
4.59
3.0.1
7.52
2.56
3..08
3..08
0.819
0.1875 3/16
11.97
3..52
23.9
5.97
2.60
2.52
2.52
0.847

*Outside dimensions across flat sides.

ELEMENTS OF SECTION

Rectangular Tubing

DIMENSIONS
PROPERTIES
Nominal*
Size
Wall
Thickness
Weight
per
Foot
Area
X – X AXIS
Y – Y AXIS
的时刻
Inertia
(1) In.4
Section
Modules
(S) In.3.
Radius of
Gyration
(r) In.
的时刻
Inertia
(1) In.4
Section
Modules
(S) In.3.
Radius of
Gyration
(r) In.
Inch
Inch
Lb.
Inch2
Inch4
Inch3.
Inch
Inch4
Inch3.
Inch
8 x 3
0.3750 3/8
24.93
7.33
51.0
12.7
2.64
10.4
6.92
1.19
0.3125 5/16
21.21
6.23
44.7
11.2
2.68
9.25
6.16
1.22
0.2500 1/4
17.32
5.09
3.7.6
9.40
2.72
7.90
5.26
1.25
0.1875 3/16
13.25
3..89
29.6
7.40
2.76
6.31
4.21
1.27
8 x 4
0.5000 1/2
3.5.24
10.4
75.1
18.8
2.69
24.6
12.3
1.54
0.3750 3/8
27.48
8.08
61.9
15.5
2.77
20.6
10.3
1.60
0.3125 5/16
23.34
6.86
53.9
13.5
2.80
18.1
9.05
1.62
0.2500 1/4
19.02
5.59
45.1
11.3
2.84
15.3
7.63
1.65
0.1875 3/16
14.53
4.27
3.5.3
8.83
2.88
12.0
6.02
1.68
8 x 6
0.5000 1/2
42.05
12.4
103.0
25.8
2.89
65.7
21.9
2.31
0.3750 3/8
3.2.58
9.58
83.7
20.9
2.96
53.5
17.8
2.36
0.3125 5/16
27.59
8.11
72.4
18.1
2.99
46.4
15.5
2.39
0.2500 1/4
22.42
6.59
60.1
15.0
3..02
3.8.6
12.9
2.42
0.1875 3/16
17.08
5.02
46.8
11.7
3..05
3.0.1
10.0
2.45
9 x 3
0.3750 3/8
27.48
8.08
69.9
15.5
2.94
11.7
7.79
1.20
0.3125 5/16
23.34
6.86
61.0
13.6
2.98
10.4
6.92
1.23
0.2500 1/4
19.02
5.59
51.1
11.4
3..02
8.84
5.90
1.26
0.1875 3/16
14.53
4.27
40.1
8.91
3..06
7.06
4.70
1.29
9 x 5
0.5000 1/2
42.05
12.4
121.0
26.8
3..12
47.4
18.9
1.96
0.3750 3/8
3.2.58
9.58
97.8
21.7
3..20
3.8.8
15.5
2.01
0.3125 5/16
27.59
8.11
84.6
18.8
3..23
3.3..8
13.5
2.04
0.2500 1/4
22.42
6.59
70.3
15.6
3..27
28.2
11.3
2.07
0.1875 3/16
17.08
5.02
54.7
12.1
3..30
22.1
8.84
2.10
9 x 7
0.5000 1/2
48.85
14.4
157.0
3.4.8
3..30
106.0
3.0.2
2.71
0.3750 3/8
3.7.69
11.1
126.0
27.9
3..37
85.1
24.3
2.77
0.3125 5/16
3.1.84
9.36
108.0
24.0
3..40
73.5
21.0
2.80
0.2500 1/4
25.82
7.59
89.4
19.9
3..43
60.8
17.4
2.83
0.1875 3/16
19.63
5.77
69.2
15.4
3..46
47.2
13.5
2.86

*Outside dimensions across flat sides.

ELEMENTS OF SECTION

Rectangular Tubing

DIMENSIONS
PROPERTIES
Nominal*
Size
Wall
Thickness
Weight
per
Foot
Area
X – X AXIS
Y – Y AXIS
的时刻
Inertia
(1) In.4
Section
Modules
(S) In.3.
Radius of
Gyration
(r) In.
的时刻
Inertia
(1) In.4
Section
Modules
(S) In.3.
Radius of
Gyration
(r) In.
Inch
Inch
Lb.
Inch2
Inch4
Inch3.
Inch
Inch4
Inch3.
Inch
10 x 2
0.3750 3/8
27.48
8.08
75.4
15.1
3..06
4.85
4.85
0.775
0.3125 5/16
23.34
6.86
66.1
13.2
3..10
4.42
4.42
0.802
0.2500 1/4
19.02
5.59
55.5
11.1
3..15
3..85
3..85
0.830
0.1875 3/16
14.53
4.27
43.7
8.74
3..20
3..14
3..14
0.858
10 x 4
0.5000 1/2
42.05
12.4
136.0
27.1
3..31
3.0.8
15.4
1.58
0.3750 3/8
3.2.58
9.58
110.0
22.0
3..39
25.5
12.8
1.63
0.3125 5/16
27.59
8.11
95.5
19.1
3..43
22.4
11.2
1.66
0.2500 1/4
22.42
6.59
79.3
15.9
3..47
18.8
9.39
1.69
0.1875 3/16
17.08
5.02
61.7
12.3
3..51
14.8
7.39
1.72
10 x 6
0.5000 1/2
48.85
14.4
181.0
36.2
3..55
80.8
26.9
2.37
0.3750 3/8
3.7.69
11.1
145.0
29.0
3..62
65.4
21.8
2.43
0.3125 5/16
3.1.84
9.36
125.0
25.0
3..65
56.5
18.8
2.46
0.2500 1/4
25.82
7.59
103.0
20.6
3..69
46.9
15.6
2.49
0.1875 3/16
19.63
5.77
79.8
16.0
3..72
3.6.5
12.2
2.51
10 x 8
0.5000 1/2
55.66
16.4
226.0
45.2
3..72
160.0
3.9.9
3..12
0.3750 3/8
42.79
12.6
180.0
3.5.9
3..78
127.0
3.1.8
3..18
0.3125 5/16
36.10
10.6
154.0
3.0.8
3..81
109.0
27.3
3..21
0.2500 1/4
29.23
8.59
127.0
25.4
3..84
90.2
22.5
3..24
0.1875 3/16
22.18
6.52
97.9
19.6
3..87
69.7
17.4
3..27
12 x 4
0.5000 1/2
48.85
14.4
221.0
36.8
3..92
36.9
18.5
1.60
0.3750 3/8
3.7.69
11.1
178.0
29.6
4.01
3.0.5
15.2
1.66
0.3125 5/16
3.1.84
9.36
153.0
25.5
4.05
26.6
13.3
1.69
0.2500 1/4
25.82
7.59
127.0
21.1
4.09
22.3
11.1
1.71
0.1875 3/16
19.63
5.77
98.2
16.4
4.13
17.5
8.75
1.74

*Outside dimensions across flat sides.

ELEMENTS OF SECTION

Rectangular Tubing

DIMENSIONS
PROPERTIES
Nominal*
Size
Wall
Thickness
Weight
per
Foot
Area
X – X AXIS
Y – Y AXIS
的时刻
Inertia
(1) In.4
Section
Modules
(S) In.3.
Radius of
Gyration
(r) In.
的时刻
Inertia
(1) In.4
Section
Modules
(S) In.3.
Radius of
Gyration
(r) In.
Inch
Inch
Lb.
Inch2
Inch4
Inch3.
Inch
Inch4
Inch3.
Inch
12 x 6
0.5000 1/2
55.66
16.4
287.0
47.8
4.19
96.0
3.2.0
2.42
0.3750 3/8
42.79
12.6
228.0
3.8.1
4.26
77.2
25.7
2.48
0.3125 5/16
36.10
10.6
196.0
3.2.6
4.30
66.6
22.2
2.51
0.2500 1/4
29.23
8.59
161.0
26.9
4.33
55.2
18.4
2.53
0.1875 3/16
22.18
6.52
124.0
20.7
4.37
42.8
14.3
2.56
12 x 8
0.5000 1/2
62.46
18.4
3.53.0
58.9
4.39
188.0
46.9
3..20
0.3750 3/8
47.90
14.1
279.0
46.5
4.45
149.0
3.7.3
3..26
0.3125 5/16
40.35
11.9
239.0
3.9.8
4.49
128.0
3.2.0
3..28
0.2500 1/4
3.2.63
9.59
196.0
3.2.6
4.52
105.0
26.3
3..31
0.1875 3/16
24.73
7.27
151.0
25.1
4.55
81.1
20.3
3..34
14 x 4
0.5000 1/2
55.66
16.4
3.3.5.0
47.8
4.52
43.1
21.5
1.62
0.3750 3/8
42.79
12.6
267.0
3.8.2
4.61
3.5.4
17.7
1.68
0.3125 5/16
36.10
10.6
230.0
3.2.8
4.65
3.0.9
15.4
1.71
0.2500 1/4
29.23
8.59
189.0
27.0
4.69
25.8
12.9
1.73
14 x 6
0.5000 1/2
62.46
18.4
426.0
60.8
4.82
111.0
3.7.1
2.46
0.3750 3/8
47.90
14.1
3.3.7.0
48.1
4.89
89.1
29.7
2.52
0.3125 5/16
40.35
11.9
288.0
41.2
4.93
76.7
25.6
2.54
0.2500 1/4
3.2.63
9.59
237.0
3.3..8
4.97
63.4
21.1
2.57
14 x 10
0.5000 1/2
76.07
22.4
608.0
86.9
5.22
3.61.0
72.3
4.02
0.3750 3/8
58.10
17.1
476.0
68.0
5.28
284.0
56.8
4.08
0.3125 5/16
48.86
14.4
405.0
57.9
5.31
242.0
48.4
4.11
16 x 4
0.5000 1/2
62.46
18.4
481.0
60.2
5.12
49.3
24.6
1.64
0.3750 3/8
47.90
14.1
3.82.0
47.8
5.21
40.4
20.2
1.69
0.3125 5/16
40.35
11.9
3.27.0
40.9
5.25
3.5.1
17.6
1.72

*Outside dimensions across flat sides.

ELEMENTS OF SECTION

Rectangular Tubing

DIMENSIONS
PROPERTIES
Nominal*
Size
Wall
Thickness
Weight
per
Foot
Area
X – X AXIS
Y – Y AXIS
的时刻
Inertia
(1) In.4
Section
Modules
(S) In.3.
Radius of
Gyration
(r) In.
的时刻
Inertia
(1) In.4
Section
Modules
(S) In.3.
Radius of
Gyration
(r) In.
Inch
Inch
Lb.
Inch2
Inch4
Inch3.
Inch
Inch4
Inch3.
Inch
16 x 8
0.5000 1/2
76.07
22.4
722.0
90.2
5.68
244.0
61.0
3..30
0.3750 3/8
58.10
17.1
565.0
70.6
5.75
193.0
48.2
3..36
0.3125 5/16
48.86
14.4
481.0
60.1
5.79
165.0
41.2
3..39
16 x 12
0.5000 1/2
89.68
26.4
962.0
120.0
6.04
618.0
103.0
4.84
0.3750 3/8
68.31
20.1
748.0
93.5
6.11
482.0
80.3
4.90
0.3125 5/16
57.38
16.9
635.0
79.4
6.14
409.0
68.2
4.93
18 x 6
0.5000 1/2
76.07
22.4
818.0
90.9
6.05
141.0
47.2
2.52
0.3750 3/8
58.10
17.1
641.0
71.3
6.13
113.0
3.7.6
2.57
0.3125 5/16
48.86
14.4
546.0
60.7
6.17
97.0
3.2.3
2.60
20 x 4
0.5000 1/2
76.07
22.4
889.0
88.9
6.31
61.6
3.0.8
1.65
0.3750 3/8
58.10
17.1
699.0
69.9
6.40
50.3
25.1
1.72
0.3125 5/16
48.86
14.4
596.0
59.6
6.44
43.7
21.8
1.74
20 x 8
0.5000 1/2
89.68
26.4
1270.0
127.0
6.94
3.00.0
75.1
3..38
0.3750 3/8
68.31
20.1
988.0
98.8
7.02
236.0
59.1
3..43
0.3125 5/16
57.36
16.9
838.0
83.8
7.05
202.0
50.4
3..46
20 x 12
0.5000 1/2
103.30
3.0.4
1650.0
165.0
7.37
750.0
125.0
4.97
0.3750 3/8
78.52
23.1
1280.0
128.0
7.44
583.0
97.2
5.03
0.3125 5/16
65.87
19.4
1080.0
108.0
7.47
495.0
82.5
5.06

*Outside dimensions across flat sides.