SHS 350×350×11
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 | 350 mm | 13.7795 in |
| Width | 350 mm | 13.7795 in |
| Thickness, t | 11 mm | 0.433071 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 282,000,000 mm⁴ | 677.5077 in⁴ |
| Elastic modulus, Sₓ | 1,610,000 mm³ | 98.2482 in³ |
| Plastic modulus, Zₓ | 1,870,000 mm³ | 114.1144 in³ |
| Radius of gyration, rₓ | 138 mm | 5.4331 in |
| Distance to top fibre | 175 mm | 6.8898 in |
| Distance to bottom fibre | 175 mm | 6.8898 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 282,000,000 mm⁴ | 677.5077 in⁴ |
| Elastic modulus, S_y | 1,610,000 mm³ | 98.2482 in³ |
| Plastic modulus, Z_y | 1,870,000 mm³ | 114.1144 in³ |
| Radius of gyration, r_y | 138 mm | 5.4331 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 435,000,000 mm⁴ | 1,045.092 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 116 kg/m | 77.9484 lb/ft |