SHS 70×70×3
Square hollow 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 |
|---|---|---|
| Height | 70 mm | 2.7559 in |
| Width | 70 mm | 2.7559 in |
| Thickness, t | 3 mm | 0.11811 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 590,000 mm⁴ | 1.4175 in⁴ |
| Elastic modulus, Sₓ | 16,900 mm³ | 1.0313 in³ |
| Plastic modulus, Zₓ | 19,900 mm³ | 1.2144 in³ |
| Radius of gyration, rₓ | 27.3 mm | 1.0748 in |
| Distance to top fibre | 35 mm | 1.378 in |
| Distance to bottom fibre | 35 mm | 1.378 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 590,000 mm⁴ | 1.4175 in⁴ |
| Elastic modulus, S_y | 16,900 mm³ | 1.0313 in³ |
| Plastic modulus, Z_y | 19,900 mm³ | 1.2144 in³ |
| Radius of gyration, r_y | 27.3 mm | 1.0748 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 922,000 mm⁴ | 2.2151 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 6.24 kg/m | 4.1931 lb/ft |