BRITISH STANDARD
Specification for
Cold rolled steel sections
UDC 669.14 – 423 – 122.2
BS 2994:1976
BS 2994:1976
Cooperating organizations The Iron and Steel Standards Committee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: British Cast Iron Research Association British Constructional Steelwork Association* British Ironfounders’ Association British Mechanical Engineering Confederation British Steel Industry* British Steel Industry — Wire Section The Concrete Society Council of Iron Foundry Associations Department of Industry (National Physical Laboratory) Electricity Supply Industry in England and Wales Engineering Equipment Users’ Association Federation of Civil Engineering Contractors Greater London Council* Health and Safety Executive* Institute of British Foundrymen Institute of Marine Engineers Institution of Mechanical Engineers (Automobile Division) Institution of Production Engineers Institution of Structural Engineers* Lloyd’s Register of Shipping Ministry of Defence National Association of Drop Forgers and Stampers Oil Companies Materials Association Process Plant Association Royal Institute of British Architects Shipbuilders’ and Repairers’ National Association Society of Motor Manufacturers and Traders Ltd. Steel Castings Research and Trade Association Tin Research Institute
The Government department and scientific and industrial organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this standard: Cold Rolled Sections Association This British Standard, having been prepared under the direction of the Iron and Steel Standards Committee, was published under the authority of the Executive Board on 29 October 1976
Department of the Environment Institution of Civil Engineers
© BSI 07-1999
Amendments issued since publication
First published July 1958 First revision October 1976
Amd. No.
The following BSI references relate to the work on this standard: Committee reference ISE/59 Draft for comment 75/40054DC ISBN 0 580 09377 8
Date of issue
Comments
BS 2994:1976
Contents Cooperating organizations Foreword 1 Scope 2 Reference 3 Basis of calculation 4 Dimensions and tolerances Appendix A Basis of calculation for reduction factors Table 1 — Equal angles Table 2 — Unequal angles Table 3 — Plain channels Table 4 — Plain channels Table 5 — Inwardly lipped channels Table 6 — Inwardly lipped channels Table 7 — Outwardly lipped channels Table 8 — Outwardly lipped channels Table 9 — Tee sections Table 10 — Zed sections Table 11 — Lipped zed sections Table 12 — Plain channels back to back Table 13 — Inwardly lipped channels back to back Table 14 — Inwardly lipped channels lip to lip Publication referred to
© BSI 07-1999
Page Inside front cover ii 1 1 1 1 32 2 4 6 8 11 13 16 17 18 22 24 26 28 30 Inside back cover
i
BS 2994:1976
Foreword This British Standard, which was first published in 1958, covers a basic range of sections formed by cold rolling from steel strip. The sizes in this revision include equivalents of previously used imperial sizes and also metric sizes adopted by the European Study Group for Cold Rolled Sections (comprised of members from Austria, Belgium, France, Germany, Italy, Netherlands and the United Kingdom). Although sections may not always be available ex-stock the sizes given in this standard are those most commonly in production. The purchaser would find it advantageous to use these sizes where possible, but size variations can readily be accommodated and in such cases requirements should be discussed with the manufacturer of the section. Attention is drawn to Addendum no. 1(1975) to BS 449-2 for design and construction details. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations.
Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 32, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. ii
© BSI 07-1999
BS 2994:1976
1 Scope This British Standard specifies the dimensions, mass and geometrical properties of the basic ranges of eight simple and three compound types of cold rolled steel section.
The ± 0.4 mm profile tolerance shall not apply to elements having a free edge, e.g. lengths of the legs of angles, channels, tees and zed sections and the lips of lipped channels and lipped zed sections, etc. In these cases the tolerances shall be as follows. Thickness
Permissible deviation
mm
mm
2 Reference The title of the standards publication referred to in this standard is given on the inside back cover.
3 Basis of calculation When steel strip is cold roll formed slight thinning occurs at the corners. The actual strip width necessary to form a section is therefore smaller than its theoretical width measured along the centre line of its cross section. For strip widths to be used in practice, experience has evolved reduction factors from which the thinning effect at the corners can be determined. In view of this the properties of the sections given in the tables have been computed using the reduction factors as briefly outlined in Appendix A.
4 Dimensions and tolerances 4.1 Dimensions. The dimensions and profiles of the sections shall be in accordance with Table 1 to Table 14. The profile dimensions and angular accuracy shall be measured at a point not less than 150 mm from the end of the section. 4.2 Tolerances for simple sections (Table 1 to Table 11). The straightness of any length shall be such that the offset does not exceed 1/600 of that length. The deviation of the profile dimensions shall not exceed ± 0.4 mm. The deviation from the angle of 90° shall not exceed ± 1°. The sections shall be reasonably free from twist and in particular cases the acceptable degree of twist shall be the subject of agreement between the purchaser and the manufacturer. The proportions of the sections may be such that the stated tolerance on the angle could lead to a variation on the overall profile dimensions exceeding the specified tolerance of ± 0.4 mm. In such cases the acceptable tolerance on the angle shall be the subject of agreement between the purchaser and the manufacturer.
© BSI 07-1999
less than 3.0 ± 0.75 3.0 up to but not including 5.0 ± 1.25 5.0 and over ± 1.50 The foregoing tolerances apply to all sections within the ranges included in Table 1 to Table 11 (i.e. sections of the same shape but of intermediate sizes and thicknesses); tolerances on cold rolled sections outside the basic ranges tabulated should be the subject of agreement between the purchaser and the manufacturer. The tolerances on ordered lengths shall be as follows. Ordered length
Permissible deviation
m
mm
up to and including 3 ± 0.8 over 3, up to and including 6 ± 1.5 over 6 ± 3.0 For manufacturing reasons the corner radii may vary slightly from those shown in the tables. This, however, has a negligible effect on the properties of the section. 4.3 Tolerances for compound sections (Table 12, Table 13 and Table 14). For compound sections, the tolerances shall be the subject of agreement between the purchaser and the manufacturer.
1
Designation
A×A×t
mm
Dimensions
A
t
Mass/unit lengths
r
mm mm mm
20 × 20 × 1.2
Area of section
cm2
kg/m
Centre of gravity
BS 2994:1976
2
Table 1 — Equal angles
Moment of inertia
Radius of gyration
Elastic modulus
Product moment of inertia
Cx
Cy
About X–X, Y–Y
About U–U
About V–V
About X–X, Y–Y
About U–U
About V–V
About X–X, Y–Y
About XY
cm
cm
cm4
cm4
cm4
cm
cm
cm
cm3
cm4
1.2
1.2
0.355
0.452
0.560
0.560
0.179
0.292
0.0667
0.630
0.804
0.384
0.125
0.133
1.6
1.6
0.463
0.590
0.580
0.580
0.231
0.378
0.0834
0.625
0.800
0.376
0.162
0.147
20 × 20 × 2
2
2
0.567
0.722
0.600
0.600
0.278
0.458
0.0977
0.620
0.797
0.368
0.198
0.180
25 × 25 × 1.6
1.6
1.6
0.589
0.750
0.705
0.705
0.464
0.756
0.171
0.787
1.00
0.478
0.258
0.293
2
2
0.724
0.922
0.725
0.725
0.563
0.923
0.204
0.782
1.00
0.470
0.317
0.359
25 × 25 × 3
3
3
1.04
1.32
0.776
0.776
0.784
1.30
0.258
0.769
0.991
0.450
0.455
0.516
30 × 30 × 1.6
1.6
1.6
0.714
0.910
0.830
0.830
0.817
1.33
0.306
0.948
1.21
0.580
0.377
0.511
2
2
0.881
1.12
0.850
0.850
0.997
1.63
0.367
0.943
1.20
0.572
0.464
0.630
30 × 30 × 3
3
3
1.27
1.62
0.900
0.900
1.41
2.32
0.495
0.931
1.19
0.552
0.670
0.912
40 × 40 × 1.6
1.6
1.6
0.965
1.23
1.08
1.08
1.99
3.21
0.757
1.27
1.62
0.784
0.680
1.23
2
2
1.19
1.52
1.10
1.10
2.44
3.96
0.917
1.27
1.61
0.776
0.840
1.52
20 × 20 × 1.6
25 × 25 × 2
30 × 30 × 2
40 × 40 × 2 40 × 40 × 2.5
20
25
30
40
© BSI 07-1999
2.5
2.5
1.47
1.88
1.12
1.12
2.98
4.85
1.10
1.26
1.61
0.766
1.04
1.88
40 × 40 × 3
3
3
1.75
2.22
1.15
1.15
3.49
5.71
1.27
1.25
1.60
0.756
1.23
2.22
50 × 50 × 2
2
2
1.51
1.92
1.35
1.35
4.85
7.85
1.85
1.59
2.02
0.980
1.33
3.00
50 × 50 × 2.5 50 × 50 × 3
50
2.5
2.5
1.87
2.38
1.37
1.37
5.95
3
3
2.22
2.82
1.40
1.40
7.01
9.66 11.4
2.24
1.58
2.02
0.970
1.64
3.71
2.60
1.58
2.01
0.960
1.95
4.41
© BSI 07-1999
Table 1 — Equal angles Designation
A×A×t mm 60 ×
Dimensions
A
t
Mass/unit lengths
r
mm mm mm
60 × 2
Area of section
cm2
kg/m
Centre of gravity
Moment of inertia
Radius of gyration
Elastic modulus
Product moment of inertia
Cx
Cy
About X–X, Y–Y
About U–U
About V–V
About X–X, Y–Y
About U–U
About V–V
About X–X, Y–Y
About XY
cm
cm
cm4
cm4
cm4
cm
cm
cm
cm3
cm4
8.48
2
2
1.82
2.32
1.60
1.60
13.7
3.26
1.91
2.43
1.18
1.93
5.22
2.5
2.5
2.26
2.88
1.62
1.62
10.4
16.9
3.97
1.90
2.42
1.17
2.39
6.47
3
3
2.69
3.42
1.65
1.65
12.3
20.0
4.64
1.90
2.42
1.16
2.84
7.69
60 × 60 × 4
4
4
3.52
4.49
1.70
1.70
16.0
26.0
5.87
1.89
2.41
1.14
3.71
10.1
70 × 70 × 3
3
3
3.16
4.02
1.90
1.90
19.8
32.2
7.54
2.22
2.83
1.37
3.89
12.3
70 × 70 × 4
70 4
4
4.15
5.29
1.95
1.95
25.8
42.0
9.61
2.21
2.82
1.35
5.10
16.2
70 × 70 × 5
5
7.5
5.08
6.48
2.01
2.01
31.2
51.3
11.2
2.20
2.81
1.31
6.26
20.0
80 × 80 × 3
3
3
3.63
4.62
2.15
2.15
29.9
48.4
11.4
2.54
3.23
1.57
5.11
18.5
4
4
4.78
6.09
2.20
2.20
39.0
63.3
14.7
2.53
3.22
1.55
6.72
24.3
5
7.5
5.87
7.48
2.26
2.26
47.4
77.6
17.3
2.52
3.22
1.52
8.27
30.2
80 × 80 × 6
6
9
6.94
8.85
2.31
2.31
55.6
91.4
19.8
2.51
3.21
1.50
9.77
35.8
100 × 100 × 3
3
3
4.57
5.82
2.65
2.65
59.2
95.6
22.9
3.19
4.05
1.98
8.06
36.4
4
4
6.03
7.69
2.70
2.70
77.5
126
29.6
3.18
4.04
1.96
10.6
48.0
5
7.5
7.44
9.48
2.76
2.76
94.9
155
35.3
3.16
4.04
1.93
13.1
59.6
6
9
8.83
2.81
2.81
183
40.8
3.15
4.03
1.91
15.5
70.9
60 × 60 × 2.5 60 × 60 × 3
80 × 80 × 4 80 × 80 × 5
100 × 100 × 4 100 × 100 × 5 100 × 100 × 6
60
80
100
11.2
112
BS 2994:1976
3
Designation
A×B×t mm
Dimensions
A
B
t
Mass/unit Area of length section
r
mm mm mm mm
20 × 15 × 1.2
kg/m
cm2
Centre of gravity
Cx
Cy
cm
cm
BS 2994:1976
4
Table 2 — Unequal angles
Moment of inertia
Radius of gyration
Angle Elastic modulus Product moment ! of inertia
About About About About About About About About X–X Y–Y U–U V–V X–X Y–Y U–U V–V cm4
cm4
cm4
cm4
cm
cm
cm
cm
tan !
About X–X
About Y–Y
About XY
cm3
cm3
cm4
1.2
1.2
0.308
0.392
0.636
0.378
0.162
0.0802 0.204
0.0386 0.643
0.452
0.721
0.314
0.580
0.119
0.0714
0.0716
1.6
1.6
0.400
0.510
0.658
0.396
0.207
0.102
0.262
0.0479 0.638
0.448
0.716
0.306
0.584
0.155
0.0927
0.0931
2
2
0.488
0.622
0.681
0.415
0.248
0.122
0.315
0.0556 0.632
0.443
0.712
0.299
0.588
0.188
0.113
0.113
1.2
1.2
0.402
0.512
1.07
0.303
0.491
0.0896 0.527
0.0533 0.980
0.418
1.02
0.323
0.288
0.255
0.0749
0.126
1.6
1.6
0.526
0.670
1.10
0.321
0.634
0.115
0.681
0.0673 0.973
0.414
1.01
0.317
0.290
0.333
0.0973
0.164
2
2
0.645
0.822
1.12
0.338
0.766
0.138
0.824
0.0796 0.966
0.410
1.00
0.311
0.292
0.408
0.119
0.200
1.6
1.6
0.589
0.750
0.990
0.473
0.708
0.262
0.834
0.137
0.972
0.592
1.05
0.427
0.469
0.352
0.172
0.268
2
2
0.724
0.922
1.01
0.492
0.860
0.318
1.01
0.162
0.966
0.587
1.05
0.420
0.472
0.433
0.211
0.329
1.6
1.6
0.714
0.910
1.43
0.404
1.55
0.283
1.67
0.169
1.31
0.558
1.35
0.430
0.288
0.604
0.177
0.398
2
2
0.881
1.12
1.46
0.422
1.89
0.343
2.03
0.202
1.30
0.553
1.35
0.424
0.289
0.744
0.218
0.489
2.5
2.5
1.08
1.38
1.49
0.444
2.29
0.414
2.47
0.240
1.29
0.548
1.34
0.417
0.291
0.913
0.266
0.598
2
2
0.959
1.22
1.34
0.571
2.06
0.652
2.36
0.352
1.30
0.731
1.39
0.537
0.419
0.777
0.338
0.717
40 × 25 × 2.5
2.5
2.5
1.18
1.50
1.37
0.594
2.51
0.790
2.88
0.420
1.29
0.725
1.38
0.528
0.421
0.955
0.415
0.880
50 × 25 × 1.6
1.6
1.6
0.903
1.15
1.76
0.487
3.09
0.567
3.32
0.340
1.64
0.702
1.70
0.544
0.287
0.955
0.282
0.789
2
2
1.12
1.42
1.79
0.505
3.79
0.691
4.07
0.412
1.63
0.697
1.69
0.538
0.288
1.18
0.347
0.972
2.5
2.5
1.38
1.75
1.82
0.527
4.62
0.839
4.97
0.493
1.62
0.692
1.68
0.531
0.289
1.45
0.425
1.19
20 × 15 × 1.6
20
15
20 × 15 × 2 30 × 15 × 1.2 30 × 15 × 1.6
30
15
30 × 15 × 2 30 × 20 × 1.6
30
20
30 × 20 × 2 40 × 20 × 1.6 40 × 20 × 2
40
20
40 × 20 × 2.5 40 × 25 × 2
© BSI 07-1999
50 × 25 × 2 50 × 25 × 2.5
40
50
25
25
© BSI 07-1999
Table 2 — Unequal angles Designation
A×B×t mm
Dimensions
A
B
t
Mass/unit Area of length section
r
mm mm mm mm
kg/m
cm2
Centre of gravity
Moment of inertia
Radius of gyration
Angle !
Cx
Cy
cm
cm
cm4
cm4
cm4
cm4
6.66 9.59
1.22 1.74
7.14 10.3
0.731 1.02
1.97 1.95
0.841 0.830
2.04 2.02
0.652 0.637
About About About About About About About About X–X Y–Y U–U V–V X–X Y–Y U–U V–V cm
cm
cm
cm
Elastic modulus
Product moment of inertia
About About X–X Y–Y
About XY
cm3
cm3
0.287 0.289
1.72 2.51
0.505 0.735
1.70 2.48
tan !
cm4
60 × 30 × 2 60 × 30 × 3
60 30
2 3
2 3
1.35 1.98
1.72 2.52
2.12 2.18
0.588 0.633
80 × 30 × 2.5 80 × 30 × 2.5 80 × 30 × 3
80 30
2 2.5 3
2 2.5 3
1.67 2.06 2.45
2.12 2.63 3.12
3.04 3.08 3.11
0.496 0.518 0.540
14.5 17.8 21.0
1.30 1.58 1.86
15.0 18.4 21.7
0.850 1.03 1.20
2.62 2.61 2.59
0.782 0.776 0.771
2.66 2.65 2.63
0.633 0.626 0.620
0.181 0.181 0.182
2.93 3.62 4.30
0.518 0.638 0.755
2.47 3.05 3.60
80 × 50 × 3 80 × 50 × 4 80 × 50 × 5
80 50
3 4 5
3 4 7.5
2.92 3.84 4.69
3.72 4.89 5.98
2.63 2.69 2.76
1.10 1.14 1.20
25.4 33.0 39.8
8.08 10.4 12.6
29.1 37.8 45.9
4.43 5.64 6.54
2.61 2.60 2.58
1.47 1.46 1.45
2.79 2.78 2.77
1.09 1.07 1.05
0.417 0.419 0.426
4.74 6.21 7.61
2.07 2.71 3.31
8.76 11.5 14.2
100 × 30 × 3 100 × 30 × 4 100 × 30 × 5
100 30
3 4 5
3 4 7.5
2.92 3.84 4.69
3.72 4.89 5.98
4.06 4.13 4.23
0.477 0.521 0.569
38.7 50.0 59.9
1.94 2.47 2.95
39.3 50.8 60.9
1.33 1.69 1.97
3.22 3.20 3.17
0.721 0.711 0.703
3.25 3.22 3.19
0.598 0.588 0.574
0.127 0.127 0.130
6.51 8.52 10.4
0.768 0.997 1.22
4.76 6.15 7.54
100 × 50 × 3 100 × 50 × 4 100 × 50 × 5 100 × 50 × 6
100 50
3 4 5 6
3 4 7.5 9
3.39 4.46 5.48 6.47
4.32 5.69 6.98 8.25
3.52 3.58 3.66 3.73
0.966 1.01 1.06 1.11
46.6 60.6 73.5 85.8
8.55 11.1 13.4 15.6
50.0 65.1 79.1 92.5
5.15 6.58 7.74 8.86
3.28 3.27 3.24 3.23
1.41 1.39 1.38 1.37
3.40 3.38 3.37 3.35
1.09 1.08 1.05 1.04
0.286 0.288 0.293 0.295
7.19 9.44 11.6 13.7
2.12 2.77 3.39 4.00
11.9 15.6 19.2 22.7
BS 2994:1976
5
Designation
Dimensions
Mass/unit Area of length section
D×B×t
D
B
t
r
mm
mm
mm
mm
mm
20
20
1.2 1.6 2
1.2 1.6 2
0.521 0.675 0.819
0.664 0.860 1.04
1.2 1.6 2 2.5
0.662 0.863 1.05 1.28
20 × 20 × 1.2 20 × 20 × 1.6 20 × 20 × 2
kg/m
Centre of gravity
Moment of inertia
BS 2994:1976
6
Table 3 — Plain channels
Radius of gyration
Elastic modulus
Shear centre
Torsion constant
Warping constant
Cy
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
Sy
K
Iw
cm
cm4
cm4
cm
cm
cm3
cm3
cm
cm4
cm6
0.741 0.766 0.792
0.454 0.563 0.653
0.277 0.351 0.416
0.827 0.809 0.791
0.646 0.639 0.631
0.454 0.563 0.653
0.220 0.284 0.344
1.55 1.55 1.55
0.0031 0.0071 0.0134
0.164 0.193 0.211
0.844 1.10 1.34 1.63
0.907 0.932 0.957 0.990
0.926 1.17 1.37 1.59
0.557 0.714 0.857 1.02
1.05 1.03 1.01 0.989
0.813 0.806 0.799 0.789
0.741 0.932 1.10 1.28
0.350 0.455 0.555 0.672
1.93 1.93 1.94 1.93
0.0040 0.0092 0.0174 0.0326
0.537 0.650 0.735 0.805
cm2
25 × 25 × 1.2 25 × 25 × 1.6 25 × 25 × 2 25 × 25 × 2.5
25
25
1.2 1.6 2 2.5
30 × 30 × 1.6 30 × 30 × 2 30 × 30 × 3
30
30
1.6 2 3
1.6 2 3
1.05 1.29 1.84
1.34 1.64 2.35
1.10 1.12 1.19
2.09 2.49 3.31
1.27 1.53 2.11
1.25 1.23 1.19
0.973 0.966 0.947
1.40 1.66 2.20
0.666 0.816 1.16
2.32 2.32 2.32
0.0112 0.0214 0.0677
1.72 1.99 2.40
40
1.6 2 2.5 3
1.6 2 2.5 3
1.43 1.76 2.16 2.55
1.82 2.24 2.76 3.25
1.43 1.46 1.49 1.52
5.20 6.27 7.50 8.60
3.10 3.79 4.59 5.33
1.69 1.67 1.65 1.63
1.31 1.30 1.29 1.28
2.60 3.14 3.75 4.30
1.21 1.49 1.83 2.15
3.08 3.09 3.09 3.10
0.0153 0.0294 0.0561 0.0947
7.86 9.27 10.7 11.9
50
2 2.5 3 4
2 2.5 3 4
2.23 2.75 3.26 4.22
2.84 3.51 4.15 5.37
1.79 1.82 1.85 1.91
7.58 9.24 10.8 13.7
2.11 2.09 2.07 2.02
1.63 1.62 1.62 1.60
5.08 6.13 7.09 8.79
2.36 2.91 3.44 4.44
3.85 3.86 3.87 3.87
0.0374 0.0717 0.122 0.278
30.0 35.4 40.0 47.0
40 × 40 × 1.6 40 × 40 × 2 40 × 40 × 2.5 40 × 40 × 3 50 × 50 × 2 50 × 50 × 2.5 50 × 50 × 3 50 × 50 × 4
40
50
12.7 15.3 17.7 22.0
© BSI 07-1999
© BSI 07-1999
Table 3 — Plain channels Designation
Dimensions
Mass/unit Area of length section
D×B×t
D
B
t
r
mm
mm
mm
mm
mm
60 × 60 × 2 60 × 60 × 3 60 × 60 × 4
60
60
2 3 4
2 3 4
80
2 3 5 6
100
2 3 5 6
80 × 80 × 2 80 × 80 × 3 80 × 80 × 5 80 × 80 × 6 100 × 100 × 2 100 × 100 × 3 100 × 100 × 5 100 × 100 × 6
80
100
kg/m
Centre of gravity
cm2
Moment of inertia
Radius of gyration
Elastic modulus
Shear centre
Torsion constant
Warping constant
Cy
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
Sy
K
Iw
cm
cm4
cm4
cm
cm
cm3
cm3
cm
cm4
cm6
2.70 3.96 5.16
3.44 5.05 6.57
2.12 2.18 2.25
22.5 31.8 39.9
13.3 19.2 24.5
2.55 2.51 2.46
1.97 1.95 1.93
7.49 10.6 13.3
3.43 5.02 6.53
4.62 4.63 4.64
0.0454 0.149 0.342
77.4 106 127
2 3 7.5 9
3.65 5.38 8.60 10.1
4.64 6.85 11.0 12.9
2.79 2.85 2.99 3.06
54.8 78.7 119 136
32.7 46.9 72.7 84.3
3.44 3.39 3.29 3.25
2.63 2.62 2.58 2.56
13.7 19.7 29.7 34.0
6.18 9.10 14.5 17.1
6.14 6.16 6.20 6.20
0.0614 0.203 0.895 1.51
342 478 666 732
2 3 7.5 9
4.59 6.79 11.0 12.9
5.84 8.65 14.0 16.5
3.45 3.52 3.66 3.73
109 158 243 281
63.6 93.2 147 172
4.32 4.27 4.18 4.13
3.30 3.28 3.24 3.23
21.8 31.6 48.7 56.2
9.72 14.4 23.2 27.4
7.67 7.69 7.74 7.75
0.0774 0.257 1.15 1.94
1 070 1 520 2 210 2 480
BS 2994:1976
7
Designation
Dimensions
Mass/unit length
Centre of gravity
Radius of gyration
Elastic modulus
D
B
mm
mm
mm
mm mm
30 × 15 × 1.2 30 × 15 × 1.6
30
15
1.2 1.6
1.2 1.6
0.521 0.675
0.664 0.860
0.435 0.455
0.899 1.12
0.146 0.185
1.16 1.14
0.469 0.464
0.599 0.749
0.137 0.177
30 × 20 × 1.2 30 × 20 × 2
30
20
1.2 2
1.2 2
0.615 0.976
0.784 1.24
0.636 0.681
1.15 1.71
0.324 0.497
1.21 1.17
0.643 0.632
0.765 1.14
40 × 15 × 1.2 40 × 15 × 2
40
15
1.2 2
1.2 2
0.615 0.976
0.784 1.24
0.378 0.415
1.78 2.66
0.160 0.244
1.51 1.46
0.452 0.443
40 × 20 × 2 40 × 20 × 3
40
20
2 3
2 3
1.13 1.61
1.44 2.05
0.600 0.651
3.38 4.48
0.556 0.758
1.53 1.48
40 × 25 × 1.6 40 × 25 × 2 40 × 25 × 2.5
40
25
1.6 2 2.5
1.6 2 2.5
1.05 1.29 1.57
1.34 1.64 2.01
0.779 0.801 0.828
3.43 4.11 4.86
0.858 1.04 1.25
25
1.6 2 2.5 3
1.6 2 2.5 3
1.18 1.45 1.77 2.08
1.50 1.84 2.26 2.65
0.705 0.725 0.750 0.776
5.76 6.93 8.26 9.44
40
1.6 2 2.5 3
1.6 2 2.5 3
1.55 1.92 2.36 2.78
1.98 2.44 3.01 3.55
1.32 1.34 1.37 1.40
30
1.6 2 3 4
1.6 2 3 4
1.43 1.76 2.55 3.28
1.82 2.24 3.25 4.17
0.830 0.850 0.900 0.951
50 × 40 × 1.6 50 × 40 × 2 50 × 40 × 2.5 50 × 40 × 3 © BSI 07-1999
60 × 30 × 1.6 60 × 30 × 2 60 × 30 × 3 60 × 30 × 4
50
50
60
r
Moment of inertia
D×B×t
50 × 25 × 1.6 50 × 25 × 2 50 × 25 × 2.5 50 × 25 × 3
t
Area of section
BS 2994:1976
8
Table 4 — Plain channels
kg/m
cm2
Shear centre
Torsion constant
Warping constant
Cy
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
Sy
K
Iw
cm
cm4
cm4
cm
cm
cm3
cm3
cm
cm4
cm6
0.941 0.940
0.0031 0.0071
0.197 0.234
0.238 0.377
1.38 1.39
0.0037 0.0160
0.444 0.606
0.891 1.33
0.143 0.225
0.838 0.832
0.0037 0.0160
0.403 0.552
0.620 0.608
1.69 2.24
0.397 0.562
1.25 1.25
0.0187 0.0587
1.27 1.51
1.60 1.58 1.56
0.800 0.795 0.788
1.72 2.05 2.43
0.498 0.611 0.745
1.70 1.70 1.70
0.0112 0.0214 0.0405
2.08 2.41 2.73
0.928 1.13 1.36 1.57
1.96 1.94 1.91 1.89
0.787 0.782 0.776 0.769
2.30 2.77 3.30 3.78
0.517 0.634 0.775 0.909
1.57 1.57 1.57 1.56
0.0126 0.0240 0.0457 0.0767
3.60 4.22 4.85 5.32
8.57 10.4 12.5 14.4
3.37 4.12 5.01 5.85
2.08 2.06 2.04 2.02
1.31 1.30 1.29 1.28
3.43 4.16 5.00 5.77
1.26 1.55 1.91 2.25
2.91 2.92 2.92 2.92
0.0167 0.0320 0.0613 0.104
13.4 15.9 18.6 20.9
10.2 12.4 17.1 21.0
1.63 1.99 2.81 3.52
2.37 2.35 2.30 2.25
0.948 0.943 0.931 0.919
3.40 4.12 5.71 7.01
0.753 0.927 1.34 1.72
1.88 1.88 1.88 1.87
0.0153 0.0294 0.0947 0.214
9.34 11.1 14.5 16.6
© BSI 07-1999
Table 4 — Plain channels Designation
Dimensions
Area of section
Centre of Moment of inertia gravity
Elastic modulus
Shear centre
Torsion constant
Warping constant
Sy
K
Iw
D
B
mm
mm
mm
mm mm
60
40
2 3 4
2 3 4
2.08 3.02 3.90
2.64 3.85 4.97
1.25 1.31 1.36
15.7 22.0 27.3
4.41 6.29 7.95
2.44 2.39 2.34
1.29 1.28 1.26
5.24 7.34 9.11
1.60 2.33 3.01
2.77 2.77 2.77
0.0347 0.113 2.257
24.8 33.0 38.8
60
50
2 3
2 3
2.39 3.49
3.04 4.45
1.68 1.74
19.1 26.9
8.11 11.6
2.51 2.46
1.63 1.62
6.37 8.96
2.44 3.56
3.68 3.69
0.0400 0.131
46.3 62.6
70
30
1.6 2
1.6 2
1.55 1.92
1.98 2.44
0.769 0.788
14.6 17.8
1.72 2.10
2.72 2.70
0.932 0.927
4.18 5.08
0.770 0.949
1.77 1.77
0.0167 0.0320
13.6 16.2
3
3
2.78
3.55
0.837
24.8
2.97
2.64
0.915
7.08
1.37
1.77
0.104
21.4
40
2 3 4
2 3 4
2.23 3.26 4.22
2.84 4.15 5.37
1.17 1.22 1.27
22.4 31.5 39.4
4.66 6.66 8.45
2.81 2.76 2.71
1.28 1.27 1.25
6.40 9.01 11.3
1.65 2.40 3.10
2.63 2.63 2.63
0.0374 0.122 0.278
36.0 48.5 57.7
80
25
1.6 2 3 4
1.6 2 3 4
1.55 1.92 2.78 3.59
1.98 2.44 3.55 4.57
0.553 0.571 0.617 0.662
17.6 21.3 29.8 36.8
1.07 1.30 1.84 2.30
2.98 2.96 2.90 2.84
0.735 0.731 0.720 0.709
4.39 5.34 7.44 9.20
0.550 0.677 0.976 1.25
1.29 1.29 1.28 1.26
0.0167 0.0320 0.104 0.235
11.4 13.5 17.8 20.7
80
40
1.6 2 3 4
1.6 2 3 4
1.93 2.39 3.49 4.53
2.46 3.04 4.45 5.77
1.08 1.10 1.15 1.20
25.0 30.5 43.1 54.1
3.97 4.87 6.98 8.89
3.18 3.16 3.11 3.06
1.27 1.27 1.25 1.24
6.24 7.62 10.8 13.5
1.36 1.68 2.45 3.18
2.51 2.51 2.51 2.51
0.0208 0.0400 0.131 0.299
41.4 49.8 67.7 81.3
2 3 4 7.5
2.70 3.96 5.16 6.24
3.44 5.05 6.57 7.95
1.49 1.55 1.60 1.67
36.6 52.0 65.7 76.5
8.99 13.0 16.6 19.7
3.26 3.21 3.16 3.10
1.62 1.60 1.59 1.57
9.14 13.0 16.4 19.1
2.57 3.76 4.89 5.92
3.38 3.39 3.39 3.40
0.0454 0.149 0.342 0.645
92.4 127 154 166
14.8 21.4 27.5
3.33 3.28 3.24
1.96 1.95 1.93
10.7 15.2 19.3
3.61 5.31 6.92
4.29 4.30 4.30
0.0507 0.167 0.385
153 212 260
60 × 50 × 2 60 × 50 × 3 70 × 30 × 1.6 70 × 30 × 2 70 × 30 × 3 70 × 40 × 2 70 × 40 × 3 70 × 40 × 4
70
r
Radius of gyration
D×B×t
60 × 40 × 2 60 × 40 × 3 60 × 40 × 4
t
Mass/unit length
Cy kg/m
cm2
cm
About X–X cm4
About Y–Y cm4
About X–X cm
About Y–Y cm
About X–X cm3
About Y–Y cm3
cm
cm4
cm6
80 × 80 × 80 × 80 ×
25 × 1.6 25 × 2 25 × 3 25 × 4
80 × 80 × 80 × 80 ×
40 × 1.6 40 × 2 40 × 3 40 × 4
80 × 80 × 80 × 80 ×
50 × 2 50 × 3 50 × 4 50 × 5
80
50
2 3 4 5
80 × 60 × 2 80 × 60 × 3 80 × 60 × 4
80
60
2 3 4
2 3 4
3.02 4.43 5.79
3.84 5.65 7.37
1.91 1.97 2.02
42.6 60.9 77.3
90 × 40 × 1.6 90 × 40 × 2 90 × 40 × 3
90
40
1.6 2 3
1.6 2 3
2.06 2.55 3.73
2.62 3.24 4.75
1.02 1.04 1.09
32.8 40.1 56.9
4.12 5.06 7.27
3.54 3.52 3.46
1.25 1.25 1.24
7.28 8.91 12.7
1.38 1.71 2.49
2.40 2.40 2.40
0.0221 0.0427 0.140
90 × 50 × 1.6 90 × 50 × 2 90 × 50 × 3
90
50
1.6 2 3
1.6 2 3
2.31 2.86 4.20
2.94 3.64 5.35
1.40 1.42 1.47
39.0 47.8 68.3
7.60 9.36 13.5
3.64 3.62 3.57
1.61 1.60 1.59
8.67 10.6 15.2
2.11 2.61 3.83
3.25 3.25 3.26
0.0249 0.0480 0.158
101 123 169
40
1.6 2 3 4
1.6 2 3 4
2.18 2.70 3.96 5.16
2.78 3.44 5.05 6.57
0.964 0.983 1.03 1.08
41.9 51.3 73.1 92.5
4.25 5.23 7.52 9.60
3.88 3.86 3.81 3.75
1.24 1.23 1.22 1.21
8.38 10.3 14.6 18.5
1.40 1.73 2.53 3.29
2.30 2.30 2.30 2.29
0.0235 0.0454 0.149 0.342
70.8 85.6 118 143
9
BS 2994:1976
100 × 40 × 1.6 100 × 40 × 2 100 100 × 40 × 3 100 × 40 × 4
55.0 66.3 90.7
Designation
Dimensions
Mass/unit Area of length section
D×B×t
D
B
t
r
mm
mm
mm
mm
mm
100
50
2 3 4 5
2 3 4 7.5
3.02 4.43 5.79 7.03
3.84 5.65 7.37 8.95
2 3 4 7.5
3.33 4.90 6.42 7.81
100 × 50 × 2 100 × 50 × 3 100 × 50 × 4 100 × 50 × 5
kg/m
Centre of Moment of inertia gravity
Radius of gyration
Elastic modulus
Shear centre
Torsion constant
Warping constant
Cy
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
Sy
K
Iw
cm
cm4
cm4
cm
cm
cm3
cm3
cm
cm4
cm6
1.35 1.40 1.45 1.51
60.9 87.2 111 130
9.69 14.0 18.0 21.5
3.98 3.93 3.88 3.82
1.59 1.58 1.56 1.55
12.2 17.4 22.2 26.1
2.66 3.89 5.08 6.17
3.14 3.14 3.14 3.15
0.0507 0.167 0.385 0.729
158 219 270 297
4.24 6.25 8.17 9.95
1.74 1.79 1.85 1.91
70.5 101 129 153
16.0 23.2 29.9 35.9
4.08 4.03 3.98 3.92
1.94 1.93 1.91 1.90
14.1 20.3 25.9 30.6
3.75 5.51 7.20 8.79
4.00 4.01 4.02 4.03
0.0560 0.185 0.427 0.812
261 365 452 505
cm2
© BSI 07-1999
100 × 60 × 2 100 × 60 × 3 100 × 60 × 4 100 × 60 × 5
100
60
2 3 4 5
120 × 50 × 3 120 × 50 × 4 120 × 50 × 5
120
50
3 4 5
3 4 7.5
4.90 6.42 7.81
6.25 8.17 9.95
1.28 1.33 1.39
134 171 202
14.9 19.2 23.0
4.63 4.57 4.51
1.54 1.53 1.52
22.3 28.5 33.7
4.00 5.22 6.36
2.92 2.92 2.93
0.185 0.427 0.812
343 425 475
120 × 60 × 4 120 × 60 × 5 120 × 60 × 6
120
60
4 5 6
4 7.5 9
7.04 8.60 10.1
8.97 11.0 12.9
1.70 1.76 1.82
198 235 270
31.9 38.4 44.6
4.70 4.63 4.58
1.89 1.87 1.86
33.0 39.2 45.1
7.42 9.07 10.7
3.77 3.78 3.78
0.470 0.895 1.51
709 803 887
140 × 60 × 4 140 × 60 × 6
140
60
4 6
4 9
7.67 11.1
9.77 14.1
1.58 1.69
284 391
33.6 47.2
5.39 5.27
1.85 1.83
40.6 55.9
7.59 10.9
3.55 3.56
0.513 1.66
1 040 1 320
150 × 50 × 3 150 × 50 × 4 150 × 50 × 5
150
50
3 4 5
3 4 7.5
5.61 7.36 8.99
7.135 9.37 11.5
1.14 1.18 1.24
227 292 348
15.9 20.5 24.7
5.64 5.58 5.51
1.49 1.48 1.47
30.3 38.9 46.3
4.11 5.37 6.56
2.66 2.65 2.66
0.212 0.491 0.937
590 739 840
180 × 50 × 3 180 × 50 × 5
180
50
3 5
3 7.5
6.32 10.2
8.05 13.0
1.03 1.12
353 545
16.7 26.0
6.62 6.48
1.44 1.42
39.2 60.5
4.19 6.71
2.44 2.43
0.239 1.06
918 1 330
200 × 50 × 4 200 × 50 × 5 200 × 50 × 6
200
50
4 5 6
4 7.5 9
8.93 11.0 12.9
11.4 14.0 16.5
1.01 1.06 1.11
590 708 821
22.1 26.7 31.1
7.20 7.12 7.05
1.39 1.38 1.37
59.0 70.8 82.1
5.54 6.79 7.99
2.30 2.30 2.29
0.598 1.15 1.94
1 490 1 730 1 940
200 × 80 × 4 200 × 80 × 5 200 × 80 × 6
200
80
4 5 6
4 7.5 9
10.8 13.3 15.8
13.8 17.0 20.1
1.97 2.02 2.07
821 993 1 160
83.6 102 120
7.72 7.65 7.60
2.46 2.45 2.44
82.1 99.3 116
4.60 4.62 4.62
0.726 1.40 2.38
5 480 6 460 7 380
250 × 50 × 4 250 × 50 × 5 250 × 50 × 6
250
50
4 5 6
4 7.5 9
10.5 12.9 15.3
13.4 16.5 19.5
0.889 0.937 0.983
1 030 1 240 1 450
23.3 28.2 32.9
8.78 8.69 8.62
1.32 1.31 1.30
82.5 99.4 116
2.03 2.03 2.02
0.705 1.35 2.30
2 560 2 990 3 380
250 × 80 × 4 250 × 80 × 5 250 × 80 × 6
250
80
4 5 6
4 7.5 9
12.4 15.3 18.1
15.8 19.5 23.1
1.74 1.80 1.84
1 390 1 690 1 980
89.1 109 128
9.40 9.33 9.27
2.38 2.37 2.35
112 135 159
4.18 4.19 4.18
0.833 1.60 2.74
9 390 11 160 12 830
13.9 17.1 20.2 5.66 6.94 8.18 14.2 17.6 20.8
BS 2994:1976
10
Table 4 — Plain channels
© BSI 07-1999
Table 5 — Inwardly lipped channels
Designation
Dimensions
Mass/unit length
Area of section
D×B×C× t
D
B
C
t
r
mm
mm
mm
mm
mm
mm
25
25
8
1.2 1.6
1.2 1.6
0.769 0.986
0.979 1.26
30 × 30 × 10 × 1.2 30 × 30 × 10 × 1.6 30
30
10
1.2 1.6
1.2 1.6
1.948 1.22
35 × 35 × 10 × 1.2 35 × 10 × 10 × 1.6 35
35
10
1.2 1.6
1.2 1.6
40 × 40 × 10 × 1.2 40 × 40 × 10 × 1.6 40
40
10
1.2 1.6
40 × 40 × 15 × 2
40
40
15
50 × 50 × 10 × 1.6 50
50
50 × 50 × 15 × 2
50
Centre of gravity
Moment of inertia
Radius of gyration
Elastic modulus
Shear centre
Torsion constant
Warping constant
CY
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
Sy
K
Iw
cm
cm4
cm4
cm
cm
cm3
cm3
cm
cm4
cm6
1.12 1.12
0.994 1.22
0.831 1.01
1.01 0.987
0.921 0.899
0.795 0.979
0.602 0.732
2.45 2.39
0.0046 0.0103
1.83 2.14
1.21 1.56
1.36 1.35
1.79 2.23
1.52 1.89
1.22 1.20
1.12 1.10
1.19 1.49
0.927 1.15
3.00 2.94
0.0057 0.0129
5.19 6.22
1.09 1.41
1.39 1.80
1.53 1.53
2.90 3.66
2.35 2.94
1.45 1.43
1.30 1.28
1.66 2.09
1.19 1.49
3.39 3.34
0.0065 0.0149
9.25 11.2
1.2 1.6
1.23 1.60
1.57 2.04
1.70 1.70
4.39 5.57
3.42 4.32
1.67 1.65
1.48 1.45
2.19 2.79
1.49 1.88
3.79 3.73
0.0074 0.0170
15.6 19.1
2
2
2.11
2.69
1.86
6.75
5.99
1.59
1.49
3.38
2.80
4.06
0.0347
41.5
10
1.6
1.6
1.98
2.52
2.04
11.2
8.18
2.10
1.80
4.47
2.76
4.50
0.0211
48.7
50
15
2
2
2.58
3.29
2.21
13.7
11.3
2.04
1.85
5.49
4.04
4.87
0.0427
94.1
60 × 60 × 15 × 2 60 × 60 × 15 × 2.5 60
60
15
2 2.5
2 2.5
3.05 3.74
3.89 4.76
2.55 2.55
24.3 29.2
18.9 22.5
2.50 2.47
2.21 2.18
8.09 9.72
5.48 6.53
5.65 5.58
0.0507 0.0965
192 224
60 × 60 × 20 × 3
60
20
3
3
4.63
5.90
2.71
34.1
28.9
2.40
2.21
8.78
5.91
0.171
384
25 × 25 × 8 × 1.2 25 × 25 × 8 × 1.6
60
kg/m
cm2
11.4
BS 2994:1976
11
Designation
Dimensions
Mass/unit length
Area of section
Centre of Moment of inertia gravity
Radius of gyration
Elastic modulus
D×B×C× t
D
B
C
t
r
mm
mm
mm
mm
mm
mm
80 × 80 × 15 × 2
80
80
15
2
2
3.99
5.09
3.23
58.9
42.8
3.40
2.90
14.7
80 × 80 × 20 × 3
80
80
20
3
3
6.04
7.70
3.40
84.6
65.7
3.32
2.92
21.2
80 × 80 × 25 × 4 80 × 80 × 25 × 5
80
80
25
4 5
4 7.5
8.12 9.74
100 × 100 × 15 × 2
100
100
15
2
2
4.94
100 × 100 × 20 × 3
100
100
20
3
3
7.45
100 × 100 × 25 × 4 100 × 100 × 25 × 5
100
100
25
4 5
4 7.5
kg/m
10.0 12.1
cm2
10.3 12.4
Shear Torsion Warping centre constant constant
Cy
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
Sy
K
Iw
cm
cm4
cm4
cm
cm
cm3
cm3
cm
cm4
cm6
8.97
7.19
0.0667
641
14.3
7.49
0.225
1 170
3.56 3.55
107 124
88.9 101
3.22 3.16
2.93 2.86
26.8 31.0
20.0 22.7
7.76 7.59
0.535 0.999
1 940 2 120
6.29
3.91
116
80.7
4.30
3.58
23.2
13.3
8.72
0.0827
1 720
9.50
4.08
169
124
4.22
3.62
33.8
21.0
9.03
0.279
2 980
4.25 4.23
218 256
169 195
4.13 4.07
3.64 3.56
43.5 51.1
29.3 33.8
9.33 9.16
0.663 1.25
4 670 5 210
12.7 15.4
BS 2994:1976
12
Table 5 — Inwardly lipped channels
© BSI 07-1999
© BSI 07-1999
Table 6 — Inwardly lipped channels
Designation
Dimensions
Mass/unit length
Area of section
Centre of gravity
Moment of inertia
Radius of gyration
Elastic modulus
Shear Torsion Warping centre constant constant
D×B×C× t
D
B
C
mm
mm
mm
mm
mm
1.2 1.6
0.665 0.847
0.847 1.08
0.652 0.651
1.04 1.27
0.291 0.347
1.11 1.08
0.586 0.567
0.694 0.843
0.343 0.409
1.49 1.44
0.0039 0.0088
1.04 1.19
t
r mm
Cy kg/m
cm2
cm
About X–X cm4
About Y–Y cm4
About X–X cm
About Y–Y cm
About X–X cm3
About Y–Y cm3
Sy cm
K cm4
Iw cm6
30
15
10
1.2 1.6
40 × 20 × 10 × 1.2 40 × 20 × 10 × 1.6
40
20
10
1.2 1.6
1.2 1.6
0.853 1.10
1.09 1.40
0.792 0.790
2.58 3.21
0.649 0.792
1.54 1.52
0.773 0.752
1.29 1.61
0.537 0.654
1.84 1.79
0.0051 0.0115
3.09 3.65
50
25
10
50
25
15
1.2 1.6 2
1.2 1.6 2
1.04 1.35 1.80
1.33 1.72 2.29
0.927 0.923 1.05
5.13 6.48 7.97
1.20 1.49 2.13
1.97 1.94 1.87
0.952 0.931 0.964
2.05 2.59 3.19
0.765 0.945 1.46
2.17 2.11 2.39
0.0062 0.0142 0.0294
7.61 9.17 18.6
50 × 40 × 10 × 1.2 50 × 40 × 10 × 1.6
50
40
10
1.2 1.6
1.2 1.6
1.32 1.73
1.69 2.20
1.59 1.58
7.27 9.29
3.73 4.70
2.08 2.05
1.49 1.46
2.91 3.72
1.54 1.94
3.59 3.54
0.0080 0.0183
23.0 28.3
50 × 40 × 15 × 2 50 × 40 × 15 × 3
50
40
15
2 3
2 3
2.27 3.21
2.89 4.10
1.74 1.73
11.4 15.4
6.57 8.66
1.99 1.94
1.51 1.45
4.57 6.15
2.90 3.82
3.88 3.74
0.0374 0.117
55.8 69.4
60 60
30 30
10 15
60
30
20
1.6 2 3 4
1.6 2 3 4
1.60 2.11 3.21 4.04
2.04 2.69 4.10 5.15
1.05 1.19 1.30 1.30
11.4 14.2 19.4 23.0
2.49 3.55 5.35 6.18
2.36 2.30 2.18 2.11
1.10 1.15 1.14 1.10
3.79 4.73 6.48 7.66
1.28 1.96 3.15 3.63
2.44 2.73 2.91 2.79
0.0170 0.0347 0.117 0.257
20.0 37.6 74.4 80.9
2 3 4
2.42 3.69 4.67
3.09 4.70 5.95
1.63 1.76 1.76
17.6 24.3 29.2
7.07 10.8 12.7
2.38 2.28 2.22
1.51 1.51 1.46
5.85 8.10 9.75
2.98 4.81 5.68
3.70 3.92 3.79
0.0401 0.135 0.300
73.9 148 166
1.6 2 3
1.60 2.11 3.21
2.04 2.69 4.10
0.791 0.908 1.01
14.5 18.3 25.3
1.68 2.43 3.67
2.66 2.61 2.49
0.908 0.952 0.947
4.14 5.22 7.23
0.984 1.53 2.46
1.86 2.12 2.28
0.0170 0.0347 0.117
17.6 31.7 59.1
50 × 25 × 10 × 1.2 50 × 25 × 10 × 1.6 50 × 25 × 15 × 2
60 × 30 × 10 × 1.6 60 × 30 × 15 × 2 60 × 30 × 20 × 3 60 × 30 × 20 × 4 60 × 40 × 15 × 2 60 × 40 × 20 × 3 60 × 40 × 20 × 4
60
40
15
60
40
20
2 3 4
70 × 25 × 10 × 1.6 70 × 25 × 15 × 2 70 × 25 × 20 × 3
70 70 70
25 25 25
10 15 20
1.6 2 3
13
BS 2994:1976
30 × 15 × 10 × 1.2 30 × 15 × 10 × 1.6
Designation
Dimensions
Mass/unit length
Area of section
D×B×C× t
D
B
C
t
r
mm
mm
mm
mm
mm
mm
70 × 30 × 15 × 2 70 × 30 × 20 × 3
70 70
30 30
15 20
2 3
2 3
2.27 3.45
2.89 4.40
70 × 40 × 15 × 2 70 × 40 × 20 × 3 70 × 40 × 25 × 4
70 70 70
40 40 40
15 20 25
2 3 4
2 3 4
2.58 3.92 5.30
80 × 80 × 80 × 80 ×
40 × 10 × 1.6 40 × 15 × 2 40 × 20 × 3 40 × 25 × 4
80 80 80 80
40 40 40 40
10 15 20 25
1.6 2 3 4
1.6 2 3 4
80 × 80 × 80 × 80 ×
50 × 10 × 1.6 50 × 15 × 2 50 × 20 × 3 50 × 25 × 4
80 80 80 80
50 50 50 50
10 15 20 25
1.6 2 3 4
90 × 40 × 10 × 1.6 90 × 40 × 15 × 2 90 × 40 × 20 × 3
90 90 90
40 40 40
10 15 20
90 × 50 × 10 × 1.6 90 × 50 × 15 × 2 90 × 50 × 20 × 3
90 90 90
50 50 50
100 × 40 × 10 × 1.6 100 × 40 × 15 × 2 100 × 40 × 20 × 3
100 100 100
100 × 50 × 15 × 2 100 × 50 × 20 × 3 100 × 50 × 25 × 4 100 × 50 × 25 × 5
Centre of gravity
Moment of inertia
Radius of gyration
Elastic modulus
Shear centre
Torsion constant
Warping constant
© BSI 07-1999
Cy
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
Sy
K
Iw
cm
cm4
cm4
cm
cm
cm3
cm3
cm
cm4
cm6
1.11 1.22
20.6 28.7
3.77 5.73
2.67 2.55
1.14 1.14
5.88 8.20
1.99 3.22
2.59 2.77
0.0374 0.126
48.8 92.2
3.29 5.00 6.75
1.54 1.67 1.79
25.2 35.4 43.6
7.51 11.5 15.4
2.77 2.66 2.54
1.51 1.52 1.51
7.21 10.1 12.5
3.05 4.93 6.95
3.54 3.76 3.94
0.0427 0.144 0.343
95.9 183 312
2.10 2.74 4.16 5.61
2.68 3.49 5.30 7.15
1.31 1.46 1.58 1.70
27.3 34.5 49.0 61.1
5.59 7.90 12.2 16.3
3.19 3.15 3.04 2.92
1.44 1.51 1.51 1.51
6.84 8.63 12.3 15.3
2.08 3.10 5.02 7.10
3.07 3.39 3.60 3.79
0.0224 0.0454 0.153 0.364
72.0 122 226 371
1.6 2 3 4
2.35 3.05 4.63 6.24
3.00 3.89 5.90 7.95
1.73 1.88 2.02 2.15
32.3 40.6 57.9 72.7
9.72 13.5 20.8 28.2
3.28 3.23 3.13 3.02
1.80 1.87 1.88 1.88
8.07 10.2 14.5 18.2
2.97 4.34 7.00 9.89
3.98 4.32 4.57 4.78
0.0252 0.0507 0.171 0.407
124 207 384 635
1.6 2 3
1.6 2 3
2.23 2.89 4.39
2.84 3.69 5.60
1.24 1.38 1.50
35.9 45.6 65.3
5.82 8.25 12.7
3.56 3.52 3.42
1.43 1.50 1.51
7.99 10.1 14.5
2.11 3.15 5.10
2.94 3.25 3.46
0.0238 0.0481 0.162
92.6 153 275
10 15 20
1.6 2 3
1.6 2 3
2.48 3.21 4.86
3.16 4.09 6.20
1.64 1.80 1.93
42.2 53.3 76.7
10.1 14.1 21.9
3.65 3.61 3.52
1.79 1.86 1.88
9.38 11.9 17.0
3.02 4.41 7.12
3.83 4.17 4.41
0.0265 0.0534 0.180
160 259 468
40 40 40
10 15 20
1.6 2 3
1.6 2 3
2.35 3.05 4.63
3.00 3.89 5.90
1.18 1.32 1.44
46.0 58.5 84.4
6.03 8.56 13.3
3.91 3.88 3.78
1.42 1.48 1.50
9.19 11.7 16.9
2.14 3.19 5.17
2.83 3.12 3.32
0.0252 0.0507 0.171
116 188 332
100 100
50 50
15 20
100
50
25
2 3 4 5
2 3 4 7.5
3.37 5.10 6.87 8.17
4.29 6.50 8.75 10.4
1.72 1.85 1.97 1.96
68.1 98.5 126 143
14.7 22.8 30.9 34.3
3.99 3.89 3.79 3.70
1.85 1.87 1.88 1.82
13.6 19.7 25.1 28.5
4.47 7.22 10.2 11.3
4.03 4.26 4.47 4.31
0.0561 0.189 0.449 0.833
319 564 891 936
100 × 60 × 15 × 2 100 × 60 × 20 × 3 100 × 60 × 25 × 4 100 × 60 × 25 × 5
100 100
60 60
15 20
100
60
25
2 3 4 5
2 3 4 7.5
3.68 5.57 7.49 8.95
4.69 7.10 9.55 11.4
2.13 2.28 2.41 2.40
77.7 113 144 165
22.9 35.4 48.2 54.2
4.07 3.98 3.88 3.81
2.21 2.23 2.25 2.18
15.5 22.5 28.8 33.0
5.92 9.52 13.4 15.0
4.94 5.20 5.43 5.27
0.0614 0.207 0.492 0.916
493 871 1 380 1 480
120 × 50 × 15 × 2 120 × 50 × 20 × 3 120 × 50 × 25 × 4 120 × 50 × 25 × 5
120 120
50 50
15 20
120
50
25
2 3 4 5
2 3 4 7.5
3.68 5.57 7.49 8.95
4.69 7.10 9.55 11.4
1.58 1.71 1.83 1.81
104 152 196 224
15.7 24.4 33.3 37.0
4.71 4.63 4.53 4.44
1.83 1.85 1.87 1.80
17.4 25.3 32.6 37.4
4.57 7.39 10.5 11.6
3.77 3.99 4.19 4.03
0.0614 0.207 0.492 0.916
464 797 1 220 1 290
kg/m
cm2
BS 2994:1976
14
Table 6 — Inwardly lipped channels
© BSI 07-1999
Table 6 — Inwardly lipped channels Designation
Dimensions
D×B×C× t
B
mm
mm
A
C
t
Mass/unit length
Area of section
Centre of gravity
r
Cy cm2
cm
About X–X cm4
About Y–Y cm4
Radius of gyration About X–X cm
About Y–Y cm
Elastic modulus About X–X cm3
About Y–Y cm3
Shear Torsion centre constant Sy cm
K cm4
Warping constant Iw cm6
mm
mm
mm
mm
60
20
60
25
3 4 5
3 4 7.5
6.04 8.12 9.74
7.70 10.3 12.4
2.11 2.24 2.22
173 223 258
37.9 51.8 58.4
4.74 4.64 4.56
2.22 2.24 2.17
28.8 37.1 42.9
9.76 13.8 15.5
4.90 5.12 4.96
0.225 0.535 0.999
1 230 1 880 2 030
140 × 60 × 20 × 3 140 140 × 60 × 25 × 4 140 140 × 60 × 25 × 5
60
20
60
25
3 4 5
3 4 7.5
6.51 8.75 10.5
8.30 11.1 13.4
1.97 2.10 2.08
248 322 375
40.1 55.0 62.1
5.47 5.38 5.29
2.20 2.22 2.15
35.4 46.0 53.5
9.94 14.1 15.8
4.63 4.85 4.69
0.243 0.577 1.08
1 670 2 510 2 720
150 × 50 × 20 × 3 150 150 × 50 × 25 × 4 150 × 50 × 25 × 5 150
50
20
50
25
3 4 5
3 4 7.5
6.28 8.44 10.1
8.00 10.7 12.9
1.53 1.64 1.63
259 338 391
26.3 36.1 40.2
5.69 5.61 5.50
1.81 1.83 1.77
34.6 45.0 52.1
7.58 10.8 11.9
3.64 3.83 3.67
0.234 0.556 1.04
1 250 1 860 1 980
180 × 50 × 20 × 3 180 180 × 50 × 25 × 4 180 × 50 × 25 × 5 180
50
20
50
25
3 4 5
3 4 7.5
6.98 9.38 11.3
8.90 11.9 14.4
1.39 1.50 1.48
403 528 615
27.8 38.4 42.8
6.73 6.65 6.53
1.77 1.79 1.72
44.7 58.6 68.3
7.71 11.0 12.2
3.36 3.53 3.38
0.261 0.620 1.17
1 840 2 680 2 880
180 × 80 × 20 × 3 180 180 × 80 × 25 × 4 180 × 80 × 25 × 5 180
80
20
80
25
3 4 5
3 4 7.5
8.40 11.3 13.7
10.7 14.3 17.4
2.49 2.62 2.60
544 714 845
88.5 122 140
7.13 7.05 6.97
2.88 2.91 2.84
60.4 79.3 93.8
16.1 22.6 25.9
5.91 6.14 5.98
0.315 0.748 1.42
5 650 8 240 9 230
200 × 50 × 20 × 3 200 200 × 50 × 25 × 4 200 × 50 × 25 × 5 200
50
20
50
25
3 4 5
3 4 7.5
7.45 10.0 12.1
9.50 12.7 15.4
1.31 1.42 1.40
520 684 800
28.7 39.6 44.3
7.40 7.33 7.21
1.74 1.76 1.70
52.0 68.4 80.0
7.78 11.1 12.3
3.20 3.36 3.21
0.279 0.663 1.25
2 310 3 340 3 610
200 × 80 × 20 × 3 200 200 × 80 × 25 × 4 200 × 80 × 25 × 5 200
80
20
80
25
3 4 5
3 4 7.5
8.87 11.9 14.4
11.3 15.1 18.4
2.36 2.49 2.47
695 915 1 090
91.6 126 145
7.84 7.77 7.68
2.85 2.88 2.81
69.5 91.5 109
16.3 22.9 26.3
5.68 5.90 5.74
0.333 0.791 1.50
7 100 10 270 11 530
250 × 50 × 20 × 3 250 250 × 50 × 25 × 4 250 × 50 × 25 × 5 250
50
20
50
25
3 4 5
3 4 7.5
8.63 11.6 14.1
11.0 14.7 17.9
1.15 1.25 1.24
899 1 190 1 400
30.5 42.2 47.2
9.04 8.98 8.85
1.66 1.69 1.62
72.0 95.2 112
7.92 11.3 12.6
2.86 3.00 2.86
0.324 0.769 1.46
3 770 5 380 5 860
250 × 80 × 20 × 3 250 250 × 80 × 25 × 4 250 × 80 × 25 × 5 250
80
20
80
25
3 4 5
3 4 7.5
10.0 13.5 16.4
12.8 17.1 20.9
2.10 2.23 2.21
1 170 1 550 1 850
98.1 135 156
9.58 9.52 9.41
2.77 2.81 2.73
93.9 124 148
16.6 23.4 27.0
5.19 5.39 5.22
0.378 0.897 1.71
11 630 16 580 18 740
120 × 60 × 20 × 3 120 120 × 60 × 25 × 4 120 120 × 60 × 25 × 5
kg/m
Moment of inertia
BS 2994:1976
15
Designation
Dimensions
B×A×C× t
B
A
C
mm
mm
mm
mm
t
Mass/unit length
Area of section
Centre of gravity
r
Cx
Radius of gyration
Elastic modulus
Shear centre
Torsion constant
Warping constant
Sx
K
Iw
cm4
cm6
About About About About About About X–X Y–Y X–X Y–Y X–X Y–Y cm3
cm3
10
1.2 1.6
1.2 1.6
0.948 1.22
1.21 1.56
1.36 1.35
1.52 1.89
2.40 1.12 3.00 1.10
1.41 1.39
0.927 1.15
1.01 1.28
2.57 2.52
0.0057 0.0129
1.49 1.74
35
10
1.2 1.6
1.2 1.6
1.09 1.41
1.39 1.80
1.53 1.53
2.35 2.94
3.62 1.30 4.56 1.28
1.61 1.59
1.19 1.49
1.37 1.76
3.02 2.97
0.0065 0.0149
3.26 3.89
40
40
10
40 40
40 40
15 20
1.2 1.6 2 3
1.2 1.6 2 3
1.23 1.60 2.11 3.21
1.57 2.04 2.69 4.10
1.70 1.70 1.86 2.00
3.42 4.32 5.99 8.97
5.21 6.61 9.73 16.6
1.48 1.45 1.49 1.48
1.82 1.80 1.90 2.01
1.49 1.88 2.80 4.48
1.81 2.33 2.95 4.48
3.45 3.40 3.36 3.11
0.0074 0.0170 0.0347 0.117
6.53 7.91 10.1 16.4
50 × 50 × 10 × 1.6 50 × 50 × 15 × 2 50 × 50 × 20 × 3
50 50 50
50 50 50
10 15 20
1.6 2 3
1.6 2 3
1.98 2.58 3.92
2.52 3.29 5.00
2.04 2.21 2.36
8.18 11.3 17.1
12.5 17.5 28.5
1.80 1.85 1.85
2.23 2.31 2.39
2.76 4.04 6.48
3.73 4.60 6.79
4.24 4.28 4.12
0.0211 0.0427 0.144
25.9 30.9 44.0
60 × 60 × 10 × 1.6 60 × 60 × 15 × 2 60 × 60 × 20 × 3 60 × 60 × 25 × 4
60 60 60 60
60 60 60 60
10 15 20 25
1.6 2 3 4
1.6 2 3 4
2.35 3.05 4.63 6.24
3.00 3.89 5.90 7.95
2.38 2.55 2.71 2.86
13.8 18.9 28.9 38.8
21.1 28.8 45.8 65.7
2.14 2.21 2.21 2.21
2.65 2.72 2.79 2.88
3.81 5.48 8.78 12.3
5.51 6.70 9.74 12.9
5.05 5.15 5.06 4.87
0.0252 0.0507 0.171 0.407
67.8 80.0 108 142
80 × 80 × 15 × 2 80 × 80 × 20 × 3 80 × 80 × 25 × 4 80 × 80 × 30 × 5
80 80 80 80
80 80 80 80
15 20 25 30
2 3 4 5
2 3 4 7.5
3.99 6.04 8.12 10.1
5.09 7.70 10.3 12.9
3.23 3.40 3.56 3.71
42.8 65.7 88.9 110
65.0 100 140 182
2.90 2.92 2.93 2.92
3.57 3.61 3.67 3.75
8.97 14.3 20.0 25.6
12.3 17.6 22.9 28.0
6.81 6.83 6.75 6.56
0.0667 0.225 0.535 1.04
363 486 593 665
100 100 100
100 100 100
15 20 25
100
100
30
2 3 4 5 6
2 3 4 7.5 9
4.94 7.45 10.0 12.5 14.6
6.29 9.50 12.7 15.9 18.6
3.91 4.08 4.25 4.40 4.39
80.7 124 169 210 237
124 189 258 330 377
3.58 3.62 3.64 3.63 3.57
4.44 4.46 4.50 4.56 4.50
13.3 21.0 29.3 37.5 42.2
19.6 28.2 36.4 44.1 50.9
8.42 8.50 8.50 8.41 8.27
0.0827 0.279 0.663 1.29 2.16
1 160 1 580 1 930 2 130 2 270
30 × 30 × 10 × 1.2 30 × 30 × 10 × 1.6
30
30
35 × 35 × 10 × 1.2 35 × 35 × 10 × 1.6
35
40 × 40 × 10 × 1.2 40 × 40 × 10 × 1.6 40 × 40 × 15 × 2 40 × 40 × 20 × 3
© BSI 07-1999
100 × 100 × 100 × 100 × 100 × 100 × 100 × 100 × 100 × 100 ×
15 × 2 20 × 3 25 × 4 30 × 5 30 × 6
mm
mm
kg/m
cm2
Moment of inertia
BS 2994:1976
16
Table 7 — Outwardly lipped channels
cm
cm4
cm4
cm
cm
cm
© BSI 07-1999
Table 8 — Outwardly lipped channels
Designation
Dimensions
Mass/unit length
B×A×C× t
B
A
C
t
r
mm
mm
mm
mm
mm
mm
kg/m
Area of section
cm2
Centre of gravity
Moment of inertia
Radius of gyration
Cx
About X–X
About Y–Y
About X–X
cm
cm4
cm4
cm
Elastic modulus
Shear Torsion Warping centre constant constant
About About About Y–Y X–X Y–Y
Sx
K
Iw
cm3
cm3
cm
cm4
cm6
cm
40 × 50 × 10 × 1.6 40 × 50 × 15 × 2 40 × 50 × 20 × 3
40 40 40
50 50 50
10 15 20
1.6 2 3
1.6 2 3
1.85 2.42 3.69
2.36 3.09 4.70
2.17 2.34 2.50
7.52 10.3 15.6
7.79 11.2 18.6
1.79 1.83 1.82
1.82 1.90 1.99
2.66 3.89 6.23
2.74 3.39 5.03
4.37 4.31 4.04
0.0197 0.0401 0.135
14.9 19.1 31.2
40 × 60 × 15 × 2 40 × 60 × 20 × 3
40 40
60 60
15 20
2 3
2 3
2.74 4.16
3.49 5.30
2.83 3.00
16.2 24.5
12.6 20.7
2.16 2.15
1.90 1.98
5.12 8.17
3.82 5.59
5.28 4.97
0.0454 0.153
32.1 52.5
40 × 80 × 15 × 2 40 × 80 × 20 × 3
40 40
80 80
15 20
2 3
2 3
3.37 5.10
4.29 6.50
3.82 4.00
33.4 50.6
15.5 24.8
2.79 2.79
1.90 1.95
7.99 12.7
4.70 6.70
7.23 6.88
0.0561 0.189
73.2 119
50 × 30 × 10 × 1.2 50 × 30 × 10 × 1.6
50
30
10
1.2 1.6
1.2 1.6
1.14 1.48
1.45 1.88
1.14 1.14
1.86 2.32
6.88 8.72
1.13 1.11
2.18 2.15
1.00 1.25
2.03 2.61
2.41 2.36
0.0068 0.0156
50 × 40 × 10 × 1.2 50 × 40 × 10 × 1.6
50
40
10
1.2 1.6
1.2 1.6
1.32 1.73
1.69 2.20
1.59 1.58
3.73 4.70
8.31 10.6
1.49 1.46
2.22 2.20
1.54 1.94
2.46 3.17
3.34 3.29
0.0080 0.0183
11.4 14.0
50 × 60 × 15 × 2 50 × 60 × 20 × 3 50 × 60 × 25 × 4
50 50 50
60 60 60
15 20 25
2 3 4
2 3 4
2.89 4.39 5.92
3.69 5.60 7.55
2.69 2.85 3.00
17.6 26.8 35.8
19.8 31.8 46.5
2.19 2.19 2.18
2.32 2.38 2.48
5.32 8.51 11.9
5.21 7.58 10.1
5.24 5.07 4.78
0.0481 0.162 0.385
51.7 74.5 108
50 × 80 × 15 × 2 50 × 80 × 20 × 3 50 × 80 × 25 × 4
50 50 50
80 80 80
15 20 25
2 3 4
2 3 4
3.52 5.33 7.18
4.49 6.80 9.15
3.65 3.83 4.00
36.1 54.9 73.6
24.4 38.5 54.9
2.84 2.84 2.84
2.33 2.38 2.45
8.30 13.2 18.4
6.42 9.16 11.9
7.18 6.99 6.66
0.0587 0.198 0.471
117 171 248
60 × 80 × 15 × 2 60 × 80 × 20 × 3 60 × 80 × 25 × 4
60 60 60
80 80 80
15 20 25
2 3 4
2 3 4
3.68 5.57 7.49
4.69 7.10 9.55
3.50 3.67 3.84
38.5 58.8 79.1
35.6 55.5 78.3
2.87 2.88 2.88
2.75 2.80 2.86
8.55 13.6 19.0
8.27 11.8 15.4
7.08 6.99 6.77
0.0614 0.207 0.492
179 247 328
80 × 100 × 15 × 2 80 × 100 × 20 × 3 80 × 100 × 25 × 4 80 × 100 × 30 × 5
80 80 80 80
100 100 100 100
15 20 25 30
2 3 4 5
2 3 4 7.5
4.62 6.98 9.38 11.7
5.89 8.90 11.9 14.9
4.17 4.35 4.52 4.68
74.5 114 155 191
77.2 118 163 210
3.56 3.58 3.60 3.58
3.62 3.65 3.69 3.75
12.8 20.2 28.2 36.0
14.6 20.7 26.7 32.3
8.73 8.75 8.68 8.47
0.0774 0.261 0.620 1.21
670 913 1 130 1 290
5.29 6.37
BS 2994:1976
17
Designation B×D×t mm 25 × 15 × 1 25 × 15 × 1.2 25 × 15 × 1.6 25 × 20 × 1 25 × 20 × 1.2 25 × 20 × 1.6 25 × 20 × 2 25 × 25 × 1 25 × 25 × 1.2 25 × 25 × 1.6 25 × 25 × 2 25 × 35 × 1 25 × 35 × 1.2 25 × 35 × 1.6 25 × 35 × 2 35 × 20 × 1 35 × 20 × 1.2 35 × 20 × 1.6 35 × 20 × 2
© BSI 07-1999
35 × 25 × 1 35 × 25 × 1.2 35 × 25 × 1.6 35 × 25 × 2
Dimensions B mm 25
25
25
25
35
35
D mm
t mm
r mm
Mass/unit length
kg/m
Area of section
cm2
Centre of gravity
BS 2994:1976
18
Table 9 — Tee sections
Moment of inertia
Radius of gyration
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
K
Cx
About X–X
Elastic modulus
Torsion constant
cm
cm4
cm4
cm
cm
cm3
cm3
cm4
15
1 1.2 1.6
1 1.2 1.6
0.396 0.467 0.599
0.504 0.594 0.763
0.449 0.456 0.472
0.110 0.127 0.156
0.131 0.158 0.211
0.467 0.462 0.453
0.510 0.515 0.526
0.105 0.122 0.152
0.105 0.126 0.169
0.0016 0.0028 0.0062
20
1 1.2 1.6 2
1 1.2 1.6 2
0.474 0.561 0.725 0.877
0.604 0.714 0.923 1.12
0.659 0.667 0.685 0.703
0.247 0.287 0.358 0.419
0.131 0.158 0.213 0.268
0.639 0.634 0.623 0.612
0.466 0.471 0.480 0.490
0.184 0.215 0.273 0.323
0.105 0.127 0.170 0.215
0.0020 0.0033 0.0076 0.0142
25
1 1.2 1.6 2
1 1.2 1.6 2
0.553 0.655 0.850 1.03
0.704 0.834 1.08 1.32
0.880 0.889 0.909 0.928
0.457 0.534 0.674 0.796
0.132 0.159 0.214 0.271
0.806 0.800 0.789 0.777
0.432 0.436 0.445 0.454
0.282 0.332 0.424 0.507
0.105 0.127 0.171 0.217
0.0023 0.0039 0.0090 0.0169
35
1 1.2 1.6 2
1 1.2 1.6 2
0.710 0.843 1.10 1.35
0.904 1.07 1.40 1.72
1.34 1.35 1.37 1.40
1.15 1.35 1.73 2.07
0.132 0.160 0.217 0.276
1.13 1.12 1.11 1.10
0.383 0.386 0.393 0.401
0.534 0.631 0.813 0.982
0.106 0.128 0.173 0.221
0.0030 0.0051 0.0117 0.0222
20
1 1.2 1.6 2
1 1.2 1.6 2
0.553 0.655 0.850 1.03
0.704 0.834 1.08 1.32
0.572 0.580 0.596 0.611
0.278 0.325 0.409 0.482
0.358 0.431 0.576 0.723
0.629 0.624 0.614 0.605
0.713 0.718 0.729 0.740
0.195 0.229 0.291 0.347
0.205 0.246 0.329 0.413
0.0023 0.0039 0.0090 0.0169
25
1 1.2 1.6 2
1 1.2 1.6 2
0.631 0.749 0.976 1.19
0.804 0.954 1.24 1.52
0.777 0.785 0.802 0.819
0.518 0.607 0.770 0.916
0.359 0.431 0.577 0.725
0.802 0.797 0.787 0.777
0.668 0.672 0.681 0.691
0.300 0.354 0.454 0.545
0.205 0.246 0.330 0.414
0.0026 0.0045 0.0103 0.0195
© BSI 07-1999
Table 9 — Tee sections Designation B×D×t
Dimensions B
D
t
Mass/unit length
Area of section
Centre of gravity
r Cx
mm 35 × 35 × 1 35 × 35 × 1.2 35 × 35 × 1.6 35 × 35 × 2 35 × 40 × 1 35 × 40 × 1.2 35 × 40 × 1.6 35 × 40 × 2 40 × 20 × 1 40 × 20 × 1.2 40 × 20 × 1.6 40 × 20 × 2 40 × 25 × 1 40 × 25 × 1.2 40 × 25 × 1.6 40 × 25 × 2 40 × 35 × 1 40 × 35 × 1.2 40 × 35 × 1.6 40 × 35 × 2 40 × 40 × 1 40 × 40 × 1.2 40 × 40 × 1.6 40 × 40 × 2 40 × 45 × 1 40 × 45 × 1.2 40 × 45 × 1.6 40 × 45 × 2
45 × 35 × 1 45 × 35 × 1.2 45 × 35 × 1.6 45 × 35 × 2
35
35
40
40
40
40
40
45
45
mm
mm
mm
kg/m
cm2
cm
About X–X cm4
About Y–Y cm4
Radius of gyration About X–X cm
About Y–Y cm
Elastic modulus About X–X cm3
About Y–Y cm3
Torsion constant K cm4
35
1 1.2 1.6 2
1 1.2 1.6 2
0.788 0.938 1.23 1.51
1.00 1.19 1.56 1.92
1.21 1.22 1.24 1.26
1.30 1.53 1.97 2.37
0.359 0.432 0.580 0.731
1.14 1.13 1.12 1.11
0.598 0.602 0.609 0.617
0.570 0.674 0.872 1.06
0.205 0.247 0.332 0.417
0.0033 0.0056 0.0130 0.0249
40
1 1.2 1.6 2
1 1.2 1.6 2
0.867 1.03 1.35 1.66
1.10 1.31 1.72 2.12
1.44 1.45 1.47 1.49
1.88 2.21 2.85 3.44
0.360 0.433 0.582 0.733
1.30 1.30 1.29 1.27
0.571 0.574 0.581 0.588
0.733 0.868 1.13 1.37
0.206 0.247 0.332 0.419
0.0036 0.0062 0.0144 0.0275
20
1 1.2 1.6 2
1 1.2 1.6 2
0.592 0.702 0.913 1.11
0.754 0.894 1.16 1.42
0.538 0.545 0.560 0.575
0.291 0.340 0.429 0.506
0.535 0.642 0.858 1.07
0.621 0.617 0.607 0.598
0.842 0.847 0.859 0.871
0.199 0.234 0.298 0.355
0.267 0.321 0.429 0.537
0.0025 0.0042 0.0096 0.0182
25
1 1.2 1.6 2
1 1.2 1.6 2
0.671 0.796 1.04 1.27
0.854 1.01 1.32 1.62
0.734 0.742 0.758 0.774
0.543 0.636 0.810 0.965
0.535 0.643 0.859 1.08
0.797 0.792 0.782 0.772
0.791 0.796 0.806 0.816
0.307 0.362 0.465 0.559
0.267 0.321 0.430 0.539
0.0028 0.0048 0.0110 0.0209
35
1 1.2 1.6 2
1 1.2 1.6 2
0.828 0.985 1.29 1.58
1.05 1.25 1.64 2.02
1.16 1.17 1.18 1.20
1.37 1.61 2.07 2.50
0.536 0.644 0.862 1.08
1.14 1.13 1.12 1.11
0.713 0.716 0.724 0.733
0.584 0.691 0.895 1.09
0.268 0.322 0.431 0.541
0.0035 0.0059 0.0137 0.0262
40
1 1.2 1.6 2
1 1.2 1.6 2
0.906 1.08 1.42 1.74
1.15 1.37 1.80 2.22
1.38 1.39 1.41 1.43
1.97 2.32 3.00 3.62
0.536 0.644 0.863 1.09
1.31 1.30 1.29 1.28
0.681 0.685 0.692 0.700
0.751 0.890 1.16 1.41
0.268 0.322 0.432 0.543
0.0038 0.0065 0.0151 0.0289
45
1 1.2 1.6 2
1 1.2 1.6 2
0.985 1.17 1.54 1.90
1.25 1.49 1.96 2.42
1.61 1.62 1.64 1.66
2.71 3.21 4.15 5.02
0.536 0.645 0.865 1.09
1.47 1.46 1.45 1.44
0.654 0.657 0.664 0.671
0.937 1.11 1.45 1.77
0.268 0.322 0.432 0.544
0.0041 0.0071 0.0165 0.0315
25
1 1.2 1.6 2
1 1.2 1.6 2
0.710 0.843 1.10 1.35
0.904 1.07 1.40 1.72
0.696 0.704 0.720 0.735
0.565 0.663 0.845 1.01
0.761 0.914 1.22 1.53
0.790 0.785 0.776 0.766
0.917 0.922 0.933 0.944
0.313 0.369 0.474 0.571
0.338 0.406 0.543 0.680
0.0030 0.0051 0.0117 0.0222
35
1 1.2 1.6 2
1 1.2 1.6 2
0.867 1.03 1.35 1.66
1.10 1.31 1.72 2.12
1.11 1.12 1.13 1.15
1.43 1.68 2.17 2.61
0.762 0.915 1.22 1.53
1.14 1.13 1.12 1.11
0.830 0.834 0.843 0.851
0.596 0.706 0.915 1.11
0.338 0.407 0.544 0.682
0.0036 0.0062 0.0144 0.0275
19
BS 2994:1976
45 × 25 × 1 45 × 25 × 1.2 45 × 25 × 1.6 45 × 25 × 2
mm
Moment of inertia
Designation B×D×t mm 45 × 45 × 1 45 × 45 × 1.2 45 × 45 × 1.6 45 × 45 × 2 50 × 20 × 1 50 × 20 × 1.2 50 × 20 × 1.6 50 × 20 × 2 50 × 25 × 1 50 × 25 × 1.2 50 × 25 × 1.6 50 × 25 × 2 50 × 35 × 1 50 × 35 × 1.2 50 × 35 × 1.6 50 × 35 × 2 50 × 50 × 1 50 × 50 × 1.2 50 × 50 × 1.6 50 × 50 × 2 50 × 50 × 3 50 × 65 × 1 50 × 65 × 1.2 50 × 65 × 1.6 50 × 65 × 2 50 × 65 × 3 65 × 65 × 1 65 × 65 × 1.2 65 × 65 × 1.6 65 × 65 × 2 65 × 65 × 3
Dimensions B mm 45
50
50
50
50
50
65
D
t
Mass/unit length
Area of section
Centre of gravity
Moment of inertia
Radius of gyration
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
K
Cx cm
cm4
cm4
cm
cm
cm3
cm3
cm4
r kg/m
cm2
Elastic modulus
Torsion constant
mm
mm
mm
45
1 1.2 1.6 2
1 1.2 1.6 2
1.02 1.22 1.60 1.98
1.30 1.55 2.04 2.52
1.55 1.56 1.57 1.59
2.83 3.35 4.33 5.26
0.762 0.916 1.23 1.54
1.47 1.47 1.46 1.44
0.764 0.768 0.775 0.782
0.958 1.14 1.48 1.81
0.339 0.407 0.545 0.684
0.0043 0.0074 0.0171 0.0329
20
1 1.2 1.6 2
1 1.2 1.6 2
0.671 0.796 1.04 1.27
0.854 1.01 1.32 1.62
0.481 0.488 0.502 0.517
0.312 0.365 0.461 0.547
1.04 1.25 1.67 2.09
0.605 0.600 0.591 0.581
1.10 1.11 1.12 1.14
0.206 0.241 0.308 0.368
0.417 0.501 0.668 0.837
0.0028 0.0048 0.0110 0.0209
25
1 1.2 1.6 2
1 1.2 1.6 2
0.749 0.891 1.16 1.43
0.954 1.13 1.48 1.82
0.663 0.670 0.685 0.700
0.585 0.686 0.876 1.05
1.04 1.25 1.67 2.09
0.783 0.778 0.768 0.759
1.05 1.05 1.06 1.07
0.318 0.375 0.482 0.582
0.417 0.501 0.669 0.838
0.0031 0.0054 0.0124 0.0235
35
1 1.2 1.6 2
1 1.2 1.6 2
0.906 1.08 1.42 1.74
1.15 1.37 1.80 2.22
1.06 1.07 1.09 1.10
1.48 1.75 2.25 2.72
1.04 1.25 1.68 2.10
1.13 1.13 1.12 1.11
0.951 0.955 0.964 0.973
0.607 0.719 0.933 1.13
0.418 0.501 0.670 0.840
0.0038 0.0065 0.0151 0.0289
50
1 1.2 1.6 2 3
1 1.2 1.6 2 3
1.14 1.36 1.79 2.21 3.21
1.45 1.73 2.28 2.82 4.09
1.71 1.72 1.74 1.76 1.81
3.91 4.63 6.01 7.32 10.3
1.04 1.26 1.68 2.11 3.20
1.64 1.63 1.62 1.61 1.58
0.848 0.851 0.858 0.865 0.885
1.19 1.41 1.84 2.26 3.21
0.418 0.502 0.672 0.843 1.28
0.0048 0.0082 0.0192 0.0369 0.119
65
1 1.2 1.6 2 3
1 1.2 1.6 2 3
1.38 1.64 2.17 2.68 3.92
1.75 2.09 2.76 3.42 4.99
2.40 2.41 2.43 2.45 2.50
7.95 9.44 12.3 15.1 21.3
1.05 1.26 1.68 2.12 3.23
2.13 2.12 2.11 2.10 2.07
0.772 0.775 0.780 0.787 0.804
1.94 2.31 3.02 3.72 5.34
0.418 0.503 0.673 0.846 1.29
0.0058 0.0100 0.0233 0.0449 0.146
65
1 1.2 1.6 2 3
1 1.2 1.6 2 3
1.49 1.79 2.36 2.92 4.27
1.90 2.27 3.00 3.72 5.44
2.21 2.22 2.24 2.26 2.31
8.72 10.4 13.5 16.6 23.6
2.29 2.75 3.68 4.61 6.97
2.14 2.13 2.12 2.11 2.08
1.10 1.10 1.11 1.11 1.13
2.03 2.42 3.18 3.91 5.63
0.705 0.847 1.13 1.42 2.14
0.0063 0.0108 0.0253 0.0489 0.160
BS 2994:1976
20
Table 9 — Tee sections
© BSI 07-1999
© BSI 07-1999
Table 9 — Tee sections Designation
Dimensions
B×D×t mm 65 × 80 × 1 65 × 80 × 1.2 65 × 80 × 1.6 65 × 80 × 2 65 × 80 × 3 80 × 65 × 1.2 80 × 65 × 1.6 80 × 65 × 2 80 × 65 × 3 80 × 80 × 1.2 80 × 80 × 1.6 80 × 80 × 2 80 × 80 × 3
B mm
65
80
80
D mm
t mm
Mass/unit length
Area of section
Centre of gravity
kg/m
cm2
Radius of gyration
Elastic modulus
About
About
About
About
About
About
Cx
X–X
Y–Y
X–X
Y–Y
X–X
Y–Y
cm
cm4
cm4
cm
cm
cm3
cm3
r mm
Moment of inertia
Torsion constant K cm4
80
1 1.2 1.6 2 3
1 1.2 1.6 2 3
1.73 2.07 2.73 3.39 4.98
2.20 2.63 3.48 4.32 6.34
2.89 2.90 2.92 2.94 2.99
15.3 18.2 23.8 29.2 41.9
2.29 2.76 3.68 4.62 7.00
2.63 2.63 2.61 2.60 2.57
1.02 1.02 1.03 1.03 1.05
2.99 3.56 4.69 5.78 8.38
0.706 0.848 1.13 1.42 2.15
0.0073 0.0126 0.0294 0.0569 0.187
65
1.2 1.6 2 3
1.2 1.6 2 3
1.93 2.55 3.15 4.62
2.45 3.24 4.02 5.89
2.06 2.08 2.10 2.14
11.1 14.6 17.9 25.6
5.13 6.84 8.57 12.9
2.13 2.12 2.11 2.08
1.45 1.45 1.46 1.48
2.51 3.30 4.06 5.86
1.28 1.71 2.14 3.23
0.0117 0.0274 0.0529 0.173
80
1.2 1.6 2 3
1.2 1.6 2 3
2.21 2.92 3.62 5.33
2.81 3.72 4.62 6.79
2.72 2.74 2.76 2.81
19.5 25.6 31.5 45.3
5.13 6.85 8.57 12.9
2.63 2.62 2.61 2.58
1.35 1.36 1.36 1.38
3.70 4.87 6.01 8.73
1.28 1.71 2.14 3.23
0.0134 0.0315 0.0609 0.200
BS 2994:1976
21
Designation
D×B×t mm 40 × 20 × 1.6
Dimensions
B
D
t
Mass/unit Area of length section
r
mm mm mm mm
kg/m
cm2
Moment of inertia
About X–X
About Y–Y
About U–U
cm4
cm4
cm4
Radius of gyration
About About min. V–V V–V cm4
cm
BS 2994:1976
22
Table 10 — Zed sections
Angle
Elastic modulus
!
About About About About X–X Y–Y U–U V–V
tan !
Product Torsion Warping moment constant constant of inertia
cm3
cm3
cm3
cm3
About XY
K
Iw
cm4
cm4
cm6
1.6
1.6
0.926
1.18
2.84
0.756
3.34
0.260
0.469
0.439
1.42
0.394
1.28
0.255
1.13
0.0098
1.67
2
2
1.13
1.44
3.38
0.917
3.99
0.306
0.461
0.445
1.69
0.482
1.54
0.305
1.37
0.0187
1.94
1.6
1.6
1.18
1.50
5.76
1.51
6.74
0.531
0.595
0.433
2.30
0.625
2.07
0.411
2.27
0.0126
5.37
2
2
1.45
1.84
6.93
1.85
8.15
0.634
0.586
0.439
2.77
0.769
2.50
0.497
2.76
0.0240
6.36
50 × 25 × 3
3
3
2.08
2.65
9.44
2.60
0.845
0.565
0.452
3.78
1.11
3.45
0.685
3.89
0.0767
8.27
50 × 30 × 1.6
1.6
1.6
1.30
1.66
6.70
2.66
0.808
0.698
0.560
2.68
0.910
2.37
0.575
3.30
0.0139
50 × 30 × 2
2
2
1.60
2.04
8.09
3.25
10.4
0.967
0.688
0.567
3.23
1.12
2.88
0.696
4.04
0.0267
10.6
50 × 30 × 3
3
3
2.31
2.95
11.1
4.64
14.4
1.30
0.664
0.584
4.44
1.63
4.02
0.960
5.72
0.0857
14.0
75 × 25 × 1.6
1.6
1.6
1.49
1.90
15.0
1.51
15.9
0.690
0.603
0.240
4.01
0.626
3.77
0.455
3.44
0.0160
14.0
2
2
1.84
2.34
18.3
1.85
19.3
0.833
0.596
0.241
4.87
0.770
4.58
0.555
4.20
0.0307
16.8
3
3
2.67
3.40
25.4
2.61
26.8
1.14
0.580
0.246
6.77
1.11
6.39
0.785
5.96
0.0992
22.5
2
2
2.31
2.94
26.3
7.91
31.5
2.68
0.955
0.471
7.00
2.03
6.23
1.33
11.1
0.0387
63.1
3
3
3.37
4.30
37.1
11.4
44.7
3.74
0.933
0.480
9.88
2.97
8.86
1.89
16.0
0.126
4
4
4.38
5.57
46.4
14.7
56.5
4.62
0.911
0.490
2.38
20.5
0.289
100 × 25 × 1.6
1.6
1.6
1.81
2.30
30.3
1.51
31.0
0.794
0.588
0.156
6.05
0.626
5.83
0.483
4.61
0.0194
27.2
100 × 25 × 2
2
2
2.23
2.84
36.9
1.85
37.8
0.963
0.582
0.157
7.38
0.771
7.11
0.592
5.64
0.0374
32.7
3
3
3.26
4.15
51.9
2.62
53.2
1.34
0.569
0.159
10.4
1.11
10.0
0.846
8.03
0.122
44.5
4
4
4.22
5.37
64.8
3.29
66.5
1.66
0.556
0.160
13.0
1.43
12.5
1.08
0.278
53.4
40 × 20 × 2
40
20
50
25
50 × 25 × 1.6 50 × 25 × 2
75 × 25 × 2
50
75
30
25
75 × 25 × 3 75 × 40 × 2 75 × 40 × 3
75
40
75 × 40 × 4 © BSI 07-1999
100 × 25 × 3 100 × 25 × 4
100
25
11.2 8.55
12.4
3.86
11.2
10.1
8.91
86.9 106
© BSI 07-1999
Table 10 — Zed sections Designation
D×B×t mm 100 × 40 × 2 100 × 40 × 3 100 × 40 × 4
Dimensions
D
B
t
Mass/unit Area of length section r
mm mm mm mm 100
kg/m
cm2
Moment of inertia
About X–X
About Y–Y
cm4
cm4
Radius of gyration
About About About min. U–U V–V V–V cm4
cm4
cm
Angle
Elastic modulus
!
About About About About X–X Y–Y U–U V–V
tan !
cm3
cm3
cm3
Product Torsion Warping moment constant constant of inertia
cm3
About XY
K
Iw
cm4
cm4
cm6
40
2 3 4
2 3 4
2.70 3.96 5.16
3.44 5.05 6.57
51.3 73.1 92.5
7.92 11.4 14.7
55.9 79.9 101
3.29 4.64 5.82
0.977 0.959 0.941
0.310 0.315 0.320
10.3 14.6 18.5
2.03 2.97 3.86
9.43 13.5 17.1
1.43 2.05 2.62
14.9 21.6 27.7
0.0454 0.149 0.342
125 174 215
2 3 4 7.5
3.17 4.67 6.10 7.42
4.04 5.95 7.77 9.45
95.7 137 175 206
7.92 11.4 14.7 17.7
99.8 143 183 216
3.79 5.40 6.84 7.91
0.969 0.953 0.938 0.915
0.212 0.214 0.216 0.222
14.7 21.1 27.0 31.7
2.03 2.97 3.87 4.72
13.9 20.0 25.6 30.2
1.51 2.19 2.82 3.35
19.5 28.2 36.4 44.1
0.0534 0.176 0.406 0.770
229 323 403 457
1.46 1.44 1.41
0.382 0.386 0.395
28.6 36.7 43.7
6.85 8.98 11.0
25.8 33.3 39.9
4.66 6.02 7.20
65.2 84.8 103
0.212 0.491 0.937
1 010 1 280 1 490
0.941 0.927 0.907
0.173 0.174 0.178
26.0 33.3 39.3
2.97 3.87 4.72
24.9 31.9 37.8
2.26 2.92 3.49
32.7 42.1 51.1
0.194 0.449 0.854
450 564 644
1.47 1.45 1.42
0.310 0.313 0.320
34.6 44.6 53.4
6.85 8.98 11.0
31.8 41.1 49.3
4.82 6.25 7.51
75.5 98.2 120
0.230 0.534 1.02
1 420 1 810 2 120
130 × 40 × 2 130 × 40 × 3 130 × 40 × 4 130 × 40 × 5
130
40
2 3 4 5
130 × 60 × 3 130 × 60 × 4 130 × 60 × 5
130
60
3 4 5
3 4 7.5
5.61 7.36 8.99
7.15 9.37 11.5
186 239 284
40.1 52.1 63.5
211 271 325
150 × 40 × 3 150 × 40 × 4 150 × 40 × 5
150
40
3 4 5
3 4 7.5
5.14 6.73 8.21
6.55 8.57 10.5
195 249 295
11.4 14.7 17.7
201 257 304
150 × 60 × 3 150 × 60 × 4 150 × 60 × 5
150
60
3 4 5
3 4 7.5
6.08 7.99 9.78
7.75 10.2 12.5
260 335 400
40.1 52.1 63.5
283 366 439
15.2 19.3 22.6 5.80 7.37 8.60 16.7 21.3 25.1
BS 2994:1976
23
Designation
D×B×C×t mm
Dimensions
D
B
C
t
Mass/unit Area of length section
r
mm mm mm mm mm
Moment of inertia
Radius of Angle gyration
About About About About About min. X–X Y–Y U–U V–V V–V kg/m
cm2
cm4
cm4
cm4
cm4
BS 2994:1976
24
Table 11 — Lipped zed sections
cm
! tan !
Elastic modulus
Product Torsion moment constant of inertia
About About About About X–X Y–Y U–U V–V cm3
cm3
cm3
cm3
Warping constant
About XY
K
Iw
cm4
cm4
cm6
120 × 45 × 20 × 1.6 120 × 45 × 20 × 2 120 120 × 45 × 20 × 2.5
45
20
1.6 2 2.5
1.6 2 2.5
2.98 3.68 4.52
3.80 4.69 5.76
82.7 101 122
19.4 23.2 27.6
94.5 115 139
7.55 9.07 10.8
1.41 1.39 1.37
0.397 0.393 0.389
13.8 16.8 20.3
4.38 5.28 6.31
13.5 16.5 20.2
2.87 3.45 4.11
29.8 36.1 43.2
0.0320 0.0614 0.117
502 599 707
130 × 50 × 20 × 1.6 130 × 50 × 20 × 2 130 130 × 50 × 20 × 2.5
50
20
1.6 2 2.5
1.6 2 2.5
3.23 3.99 4.91
4.12 5.09 6.26
107 130 158
25.3 30.5 36.3
122 149 180
9.80 11.8 14.1
1.54 1.52 1.50
0.401 0.397 0.393
16.4 20.0 24.3
5.15 6.22 7.45
15.9 19.6 23.9
3.39 4.09 4.88
38.8 47.0 56.5
0.0347 0.0667 0.128
757 907 1 070
140 × 50 × 20 × 1.6 140 × 50 × 20 × 2 140 140 × 50 × 20 × 2.5
50
20
1.6 2 2.5
1.6 2 2.5
3.36 4.15 5.11
4.28 5.29 6.51
127 155 188
25.3 30.5 36.3
142 173 210
10.2 12.3 14.7
1.54 1.53 1.50
0.360 0.357 0.353
18.1 22.2 26.9
5.15 6.22 7.45
17.6 21.7 26.6
3.48 4.20 5.01
42.0 51.0 61.3
0.0361 0.0694 0.133
888 1 060 1 260
150 × 50 × 20 × 2 150 150 × 50 × 20 × 2.5
50
20
2 2.5
2 2.5
4.31 5.31
5.49 6.76
183 222
30.5 36.3
200 243
12.8 15.2
1.52 1.50
0.323 0.319
24.4 29.6
6.23 7.45
23.9 29.3
4.29 5.13
54.9 66.1
0.0721 0.138
1 240 1 470
165 × 50 × 20 × 2 165 165 × 50 × 20 × 2.5
50
20
2 2.5
2 2.5
4.54 5.60
5.79 7.14
229 279
30.5 36.3
246 299
13.4 16.0
1.52 1.50
0.282 0.278
27.8 33.8
6.23 7.45
27.4 33.7
4.42 5.28
60.8 73.2
0.0761 0.146
1 520 1 800
180 × 60 × 20 × 2 180 × 60 × 20 × 2.5 180 180 × 60 × 20 × 3
60
20
2 2.5 3
2 2.5 3
5.09 6.29 7.45
6.49 8.01 9.50
314 383 450
49.0 58.8 67.5
342 417 488
20.8 25.0 28.8
1.79 1.77 1.74
0.310 0.307 0.304
34.9 42.6 49.9
8.31 10.0 11.5
34.0 41.8 49.3
5.84 7.01 8.08
91.0 110 128
0.0854 0.164 0.279
2 820 3 360 3 850
© BSI 07-1999
© BSI 07-1999
Table 11 — Lipped zed sections Designation
Dimensions
Mass/unit Area of length section
D×B×C×t
D
B
C
t
r
mm
mm
mm
mm
mm
mm
190 × 60 × 20 × 2 190 × 60 × 20 × 2.5
2
2
Moment of inertia
Radius of gyration
About About About About About min. X–X Y–Y U–U V–V V–V kg/m 5.25
cm2 6.69
cm4
cm4
cm4
357
49.0
384
cm4 21.4
cm 1.79
Angle
Elastic modulus
!
About About About About X–X Y–Y U–U V–V
tan ! 0.287
Product Torsion Warping moment constant constant of inertia
cm3
cm3
cm3
cm3
37.5
8.31
36.7
5.93
About XY
K
Iw
cm4
cm4
cm6
0.0881
3 170
96.3
2.5
2.5
6.48
8.26
436
58.8
469
25.7
1.76
0.284
45.9
10.0
45.2
7.12
117
0.169
3 790
190 × 60 × 20 × 3
3
3
7.69
9.80
511
67.6
549
29.6
1.74
0.281
53.8
11.5
53.3
8.21
135
0.288
4 340
200 × 60 × 20 × 2
2
2
5.41
6.89
403
49.0
430
21.9
1.78
0.267
40.3
39.5
6.02
102
0.0907
3 550
200 × 60 × 20 × 2.5
190
200
60
60
20
20
200 × 60 × 20 × 3 215 × 75 × 20 × 2.5 215 × 75 × 20 × 3
215
75
20
230 × 75 × 25 × 2.5 230 × 75 × 25 × 3 230 × 75 × 25 × 4 250 × 75 × 25 × 3 250 × 75 × 25 × 4
230
75
25
250
75
25
2.5
2.5
6.68
3
3
7.92
2.5
2.5
7.56
3
3
8.98
2.5
2.5
3
3
4
4
8.51 10.1 9.64
8.31
493
58.8
525
26.3
1.76
0.264
49.3
10.0
48.6
7.23
123
0.175
4 240
578
67.6
615
30.3
1.73
0.261
57.8
11.5
57.5
8.33
143
0.297
4 860
670
107
732
45.0
2.16
0.314
62.4
14.4
60.4
10.2
196
0.198
8 510
11.4
789
123
860
52.1
2.13
0.311
73.4
16.8
71.5
11.8
229
0.338
9 810
8.05
10.3
807
120
876
51.3
2.24
0.301
70.2
16.2
68.5
11.5
227
0.211
11 270
9.57
12.2
951
139
1 030
59.7
2.21
0.298
82.7
18.9
81.1
13.3
266
0.360
13 050
12.5
15.9
1 220
173
1 320
74.6
2.16
0.293
16.7
336
0.833
16 140
13.7
290
0.378
15 670
17.1
367
0.876
19 400
3
3
10.0
12.8
1 160
139
1 240
62.2
2.20
0.264
4
4
13.1
16.7
1 490
173
1 590
77.7
2.15
0.259
106 92.8 119
23.7 18.9 23.7
105 91.4 119
BS 2994:1976
25
BS 2994:1976
26
Table 12 — Plain channels back to back
S cg = distance between centroids such that lyy = lxx Designation
Dimensions
Mass/unit length
D × 2B × t
D
2B
t
r
mm
mm
mm
mm
mm
100 × 80 × 1.6 100 × 80 × 2 100 × 80 × 3 100 × 80 × 4
100
80
120 × 100 × 3 120 × 100 × 4 120 × 100 × 5
120
150 × 100 × 3 150 × 100 × 4 150 × 100 × 5
kg/m
Area of section
cm2
Moment of inertia
Radius of gyration
Elastic modulus
Warping Centroid Constant centres when Iyy = Ixx
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
Iw
cm4
cm4
cm
cm
cm3
cm3
cm6
1.6 2 3 4
1.6 2 3 4
4.36 5.41 7.92 10.3
5.56 6.89 10.1 13.1
83.8 103 146 185
13.7 17.1 25.8 34.5
3.88 3.86 3.81 3.75
1.57 1.58 1.60 1.62
16.8 20.5 29.2 37.0
100
3 4 5
3 4 7.5
9.81 12.8 15.6
12.5 16.3 19.9
268 342 404
50.2 67.1 84.2
4.63 4.57 4.51
2.00 2.03 2.06
44.6 57.0 67.4
150
100
3 4 5
3 4 7.5
11.2 14.7 18.0
14.3 18.7 22.9
455 584 695
50.3 67.2 84.5
5.64 5.58 5.51
1.87 1.89 1.92
180 × 100 × 3 180 × 100 × 5
180
100
3 5
3 7.5
12.6 20.3
16.1 25.9
706 1 090
50.3 84.7
6.62 6.48
200 × 100 × 4 200 × 100 × 5 200 × 100 × 6
200
100
4 5 6
4 7.5 9
17.9 21.9 25.9
22.7 27.9 33.0
1 180 1 420 1 640
67.5 84.9 103
7.20 7.12 7.05
3.42 4.28 6.44 8.62
Scg cm
291 349 470 560
7.36 7.32 7.21 7.10
10.0 13.4 16.8
1 410 1 720 1 910
8.72 8.62 8.48
60.6 77.9 92.7
10.1 13.4 16.9
2 230 2 730 3 080
10.9 10.8 10.6
1.77 1.81
78.5 121
10.1 16.9
3 240 4 520
12.9 12.7
1.72 1.74 1.76
118 142 164
13.5 17.0 20.5
4 950 5 640 6 180
14.1 14.0 13.8
© BSI 07-1999
© BSI 07-1999
Table 12 — Plain channels back to back Scg = distance between centroids such that Iyy = Ixx Designation
Dimensions
Mass/unit length
D × 2B × t
D
2B
t
r
mm
mm
mm
mm
mm
200 × 160 × 4
kg/m
Area of section
cm2
Moment of inertia
Radius of gyration
Elastic modulus
Warping Constant
Centroid centres when Iyy = Ixx
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
Iw
Scg
cm4
cm4
cm
cm
cm3
cm3
cm6
cm
4
4
21.6
27.5
1 640
274
7.72
3.15
164
34.2
22 360
14.6
5
7.5
26.6
33.9
1 990
343
7.65
3.18
199
42.9
26 290
14.5
200 × 160 × 6
6
9
31.5
40.2
2 320
412
7.60
3.20
232
51.5
29 760
14.4
250 × 100 × 4
4
4
21.0
26.7
2 060
67.7
8.78
1.59
165
13.5
7 820
17.4
5
7.5
25.8
32.9
2 490
85.3
8.69
1.61
199
17.1
8 970
17.2
250 × 100 × 6
6
9
30.6
39.0
2 890
103
8.62
1.63
232
20.7
9 900
17.0
250 × 160 × 4
4
4
24.8
31.5
2 790
274
9.40
2.95
223
34.3
35 280
18.2
5
7.5
30.5
38.9
3 390
343
9.33
2.97
271
42.9
41 670
18.0
6
9
36.3
46.2
3 970
413
9.27
2.99
317
51.6
47 360
17.9
200 × 160 × 5 200
250 × 100 × 5 250
250 × 160 × 5 250 250 × 160 × 6
160
100
160
BS 2994:1976
27
BS 2994:1976
28
Table 13 — Inwardly lipped channels back to back
Scg = distance between centroids such that Iyy = Ixx Designation
Dimensions
Mass/unit length
D × 2B × C × t
D
2B
C
t
r
mm
mm
mm
mm
mm
mm
kg/m
Area of Moment of inertia section
cm2
100 × 80 × 10 × 1.6 100
80
10
1.6
1.6
4.71
6.00
100 × 80 × 15 × 2
100
80
15
2
2
6.10
7.77
100 × 80 × 20 × 3
100
80
20
3
3
9.26
100 × 100 × 15 × 2
100
100
15
2
2
6.73
11.8 8.57
Radius of gyration
Elastic modulus
Warping constant
Centroid centres when Iyy = Ixx
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
Iw
Scg
cm4
cm4
cm
cm
cm3
cm3
cm6
cm
20.4
3.91
1.84
18.4
5.10
482
7.30
117
91.9
30.6
3.88
1.98
23.4
7.64
759
7.17
169
50.8
3.78
2.08
33.7
12.7
1 270
6.95
136
54.6
3.99
2.52
27.2
10.9
1 360
7.06
100 × 100 × 20 × 3
100
100
20
3
3
10.2
13.0
197
3.89
2.63
39.4
18.0
2 270
6.83
100 × 100 × 25 × 4
100
100
25
4
4
13.7
17.5
251
130
3.79
2.73
50.2
26.0
3 340
6.58
100 × 100 × 25 × 5
100
100
25
5
7.5
16.3
20.8
285
149
3.70
2.67
57.0
29.7
3 440
6.45
120 × 100 × 15 × 2
120
100
15
2
2
208
54.6
4.71
2.41
34.7
10.9
1 930
8.69
120 × 100 × 20 × 3
120
100
20
3
3
11.1
14.2
304
90.0
4.63
2.52
50.7
18.0
3 170
8.48
120
100
25
150
100
20
150
100
25
180
100
20
180
100
25
120 × 100 × 25 × 4 120 × 100 × 25 × 5 150 × 100 × 20 × 3 150 × 100 × 25 × 4 150 × 100 × 25 × 5 © BSI 07-1999
180 × 100 × 20 × 3 180 × 100 × 25 × 4 180 × 100 × 25 × 5
7.36
9.37
89.9
4
4
15.0
19.1
392
130
4.53
2.61
65.3
26.0
4 620
8.25
5
7.5
17.9
22.8
449
149
4.44
2.55
74.8
29.7
4 780
8.11
3
3
12.6
16.0
519
5.69
2.37
69.1
18.0
4 820
10.8
90.0
26.1
6 930
10.6
29.8
7 220
10.4
18.0
6 810
13.0
90.0
4
4
16.9
21.5
675
130
5.61
2.46
5
7.5
20.3
25.8
781
149
5.50
2.40
3
3
14.0
17.8
805
6.73
2.25
4
4
18.8
23.9
1 060
130
6.65
2.34
117
26.1
9 720
12.8
5
7.5
22.6
28.8
1 230
149
6.53
2.28
137
29.8
10 170
12.6
90.1
104 89.5
© BSI 07-1999
Table 13 — Inwardly lipped channels back to back Scg = distance between centroids such that Iyy = Ixx Designation
Dimensions
Mass/unit length
D × 2B × C × t
D
2B
C
t
r
mm
mm
mm
mm
mm
mm
200 × 100 × 20 × 3 200 × 100 × 25 × 4 200 × 100 × 25 × 5 200 × 160 × 20 × 3 200 × 160 × 25 × 4 200 × 160 × 25 × 5 250 × 100 × 20 × 3 250 × 100 × 25 × 4 250 × 100 × 25 × 5 250 × 160 × 20 × 3 250 × 160 × 25 × 4 250 × 160 × 25 × 5
200
100
20
200
100
25
200
100
20
200
160
25
250
100
20
250
100
25
250
160
20
250
160
25
kg/m
Area of section
cm2
Moment of inertia
Radius of gyration
About X–X
About Y–Y
About X–X
About Y–Y
cm4
cm4
cm
cm
3
3
14.9
19.0
1 040
4
4
20.0
25.5
1 370
5
7.5
24.2
30.8
1 600
3
3
17.7
22.6
4
4
23.8
5
7.5
28.9
3
3
4 5
90.1
Elastic modulus
Warping constant
Centroid centres when Iyy = Ixx
About About X–X Y–Y
Iw
Scg
cm6
cm
cm3
cm3
7.40
2.18
104
18.0
8 330
14.4
130
7.33
2.26
137
26.1
11 840
14.2
149
7.21
2.20
160
29.9
12 420
14.0
1 390
309
7.84
3.70
139
38.7
29 520
14.6
30.3
1 830
441
7.77
3.81
183
55.1
41 780
14.4
36.8
2 170
516
7,68
3.74
217
64.4
46 210
14.3
17.3
22.0
1 800
9.04
2.03
144
18.0
12 790
17.8
4
23.2
29.5
2 380
131
8.98
2.11
190
26.1
18 060
17.6
7.5
28.1
35.8
2 800
150
8.85
2.05
224
30.0
19 030
17.4
3
3
20.1
25.6
2 350
310
9.58
3.48
188
38.7
45 590
18.3
4
4
26.9
34.3
3 110
441
9.52
3.59
248
55.1
64 170
18.2
5
7.5
32.8
41.8
3 700
516
9.41
3.51
296
64.5
71 210
18.0
90.2
BS 2994:1976
29
BS 2994:1976
30
Table 14 — Inwardly lipped channels lip to lip
Scg = distance between centroids such that Iyy = Ixx Designation
Dimensions
Mass/unit length
D × 2B × C × t
D
2B
C
t
r
mm
mm
mm
mm
mm
mm
kg/m
Area of section
cm2
100 × 80 × 10 × 1.6
100
80
10
1.6
1.6
4.71
100 × 80 × 15 × 2
100
80
15
2
2
6.10
100 × 80 × 20 × 3
100
80
20
3
3
9.26
100 × 100 × 15 × 2
100
100
15
2
2
100 × 100 × 20 × 3
100
100
20
3
3
10.2
13.0
100 × 100 × 25 × 4
100
100
25
4
4
13.7
100 × 100 × 25 × 5
100
100
25
5
7.5
16.3
120 × 100 × 15 × 2
120
100
15
2
2
120 × 100 × 20 × 3
120
100
20
3
3
11.1
14.2
120
100
25
4
4
15.0
5
7.5
17.9
150
100
20
3
3
4
4
5
120 × 100 × 25 × 4 120 × 100 × 25 × 5 150 × 100 × 20 × 3 150 × 100 × 25 × 4 150 × 100 × 25 × 5 © BSI 07-1999
180 × 100 × 20 × 3 180 × 100 × 25 × 4 180 × 100 × 25 × 5
150
100
25
180
100
20
180
100
25
6.00
Radius of gyration
Elastic modulus
Torsion constant
Centroid centres when Iyy = Ixx
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
K
Scg
cm4
cm4
cm
cm
cm3
cm3
cm4
cm
91.9
3.91
3.16
18.4
14.9
108
7.30
73.1
3.88
3.07
23.4
18.3
133
7.17
104
3.78
2.97
33.7
26.0
193
6.95
136
122
3.99
3.77
27.2
24.4
189
7.06
197
175
3.89
3.67
39.4
34.9
275
6.83
17.5
251
222
3.79
3.56
50.2
44.4
356
6.58
20.8
285
261
3.70
3.54
57.0
52.2
434
6.45
208
141
4.71
3.88
34.7
28.2
249
8.69
304
203
4.63
3.78
50.7
40.6
363
8.48
19.1
392
259
4.53
3.68
65.3
51.8
470
8.25
22.8
449
306
4.44
3.66
74.8
61.2
576
8.11
12.6
16.0
519
245
5.69
3.92
69.1
49.0
502
10.8
16.9
21.5
675
314
5.61
3.82
90.0
62.9
653
10.6
7.5
20.3
25.8
781
374
5.50
3.81
104
74.8
801
10.4
3
3
14.0
17.8
805
287
6.73
4.02
89.5
57.5
648
13.0
4
4
18.8
23.9
1 060
370
6.65
3.93
117
73.9
844
12.8
5
7.5
22.6
28.8
1 230
442
6.53
3.92
137
88.3
1 040
12.6
7.36
11.8 8.57
9.37
117
59.7
169
6.73
7.77
Moment of inertia
© BSI 07-1999
Table 14 — Inwardly lipped channels lip to lip Scg = distance between centroids such that Iyy = Ixx Designation
Dimensions
Mass/unit length
D × 2B × C × t
D
2B
C
t
r
mm
mm
mm
mm
mm
mm
200 × 100 × 20 × 3 200 × 100 × 25 × 4 200 × 100 × 25 × 5 200 × 160 × 20 × 3 200 × 160 × 25 × 4 200 × 160 × 25 × 5 250 × 100 × 20 × 3 250 × 100 × 25 × 4 250 × 100 × 25 × 5 250 × 160 × 20 × 3 250 × 160 × 25 × 4 250 × 160 × 25 × 5
200
100
20
200
100
25
200
160
20
200
160
25
250
100
20
250
100
25
250
160
20
250
160
25
3
3
kg/m 14.9
Area of section
cm2 19.0
Moment of inertia
Radius of gyration
Elastic modulus
Torsion constant
Centroid centres when Iyy = Ixx
About X–X
About Y–Y
About X–X
About Y–Y
About X–X
About Y–Y
K
Scg
cm4
cm4
cm
cm
cm3
cm3
cm4
cm
1 040
316
7.40
4.08
104
63.1
748
14.4
4
4
20.0
25.5
1 370
406
7.33
3.99
137
81.3
974
14.2
5
7.5
24.2
30.8
1 600
487
7.21
3.98
160
97.4
1 200
14.0
3
3
17.7
22.6
1 390
901
7.84
6.31
139
113
1 630
14.6
4
4
23.8
30.3
1 830
1 170
7.77
6.22
183
146
2 130
14.4
5
7.5
28.9
36.8
2 170
1 420
7.68
6.20
217
177
2 640
14.3
3
3
17.3
22.0
1 800
386
9.04
4.19
144
77.3
1 000
17.8
99.7
4
4
23.2
29.5
2 380
499
8.98
4.11
190
1 310
17.6
5
7.5
28.1
35.8
2 800
600
8.85
4.09
224
120
1 610
17.4
3
3
20.1
25.6
2 350
1 090
9.58
6.51
188
136
2 240
18.3
4
4
26.9
34.3
3 110
1 410
9.52
6.42
248
177
2 940
18.2
5
7.5
32.8
41.8
3 700
1 720
9.41
6.41
296
215
3 640
18.0
BS 2994:1976
31
BS 2994:1976
Appendix A Basis of calculation for reduction factors As described in clause 3, slight thinning at the corners occurs when steel strip is cold roll formed. The actual geometrical properties are therefore different from the theoretical properties that would be calculated if no allowance were made for this thinning effect. The properties shown in the tables in this standard are the more accurate values, an allowance for the thinning at the corners having been made in accordance with the following formula: r+# t t red = -------------------- t r + 0.5t where tred is the reduced corner thickness (see diagram) r is the internal radius (= t for sections up to and including 4 mm thick and = 1"t for sections over 4 mm up to and including 6 mm thick) t is the unreduced thickness # is the reduction factor The reduction factor, #, is taken as 0.30 r r for -- = 1.0 and 0.35 for - = 1.5 . t t
32
The mean radius of curvature, rm, as used in the calculations is given by: rm = r + 0.5t There is a somewhat similar thinning effect in the case of the radii at the top of tee sections. This has been allowed for in the calculations of the properties tabulated in this standard, although the effect in this case is, in fact, very small indeed.
© BSI 07-1999
BS 2994:1976
Publication referred to Addendum No. 1 (1975) to BS 449-2, The use of cold formed steel sections in building.
© BSI 07-1999
BS 2994:1976
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