HD 260×299
HD wide flange columns 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 | 335 mm | 13.189 in |
| Flange width, b_f | 278 mm | 10.9449 in |
| Web thickness, t_w | 31 mm | 1.2205 in |
| Flange thickness, t_f | 55 mm | 2.1654 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 642,000,000 mm⁴ | 1,542.411 in⁴ |
| Elastic modulus, Sₓ | 3,830,000 mm³ | 233.7209 in³ |
| Plastic modulus, Zₓ | 4,730,000 mm³ | 288.6423 in³ |
| Radius of gyration, rₓ | 130 mm | 5.1181 in |
| Distance to top fibre | 167.5 mm | 6.5945 in |
| Distance to bottom fibre | 167.5 mm | 6.5945 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 198,000,000 mm⁴ | 475.6969 in⁴ |
| Elastic modulus, S_y | 1,420,000 mm³ | 86.6537 in³ |
| Plastic modulus, Z_y | 2,190,000 mm³ | 133.642 in³ |
| Radius of gyration, r_y | 72.1 mm | 2.8386 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 33,900,000 mm⁴ | 81.4451 in⁴ |
| Warping constant, C_w | 3.86000e+12 mm⁶ | 14,374.244 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 299 kg/m | 200.9187 lb/ft |