HE 280 A
HE wide flange sections from Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 270 mm | 10.6299 in |
| Flange width, b_f | 280 mm | 11.0236 in |
| Web thickness, t_w | 8 mm | 0.314961 in |
| Flange thickness, t_f | 13 mm | 0.511811 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 137,000,000 mm⁴ | 329.1438 in⁴ |
| Elastic modulus, Sₓ | 1,010,000 mm³ | 61.634 in³ |
| Plastic modulus, Zₓ | 1,110,000 mm³ | 67.7364 in³ |
| Radius of gyration, rₓ | 119 mm | 4.685 in |
| Distance to top fibre | 135 mm | 5.315 in |
| Distance to bottom fibre | 135 mm | 5.315 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 47,600,000 mm⁴ | 114.3595 in⁴ |
| Elastic modulus, S_y | 340,000 mm³ | 20.7481 in³ |
| Plastic modulus, Z_y | 518,000 mm³ | 31.6103 in³ |
| Radius of gyration, r_y | 70 mm | 2.7559 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 635,000 mm⁴ | 1.5256 in⁴ |
| Warping constant, C_w | 7.85000e+11 mm⁶ | 2,923.259 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 76.4 kg/m | 51.3384 lb/ft |