RHS 350×200×8
Rectangular 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 | 200 mm | 7.874 in |
| Thickness, t | 8 mm | 0.314961 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 141,000,000 mm⁴ | 338.7539 in⁴ |
| Elastic modulus, Sₓ | 806,000 mm³ | 49.1851 in³ |
| Plastic modulus, Zₓ | 981,000 mm³ | 59.8643 in³ |
| Radius of gyration, rₓ | 129 mm | 5.0787 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 | 59,200,000 mm⁴ | 142.2286 in⁴ |
| Elastic modulus, S_y | 592,000 mm³ | 36.1261 in³ |
| Plastic modulus, Z_y | 666,000 mm³ | 40.6418 in³ |
| Radius of gyration, r_y | 83.6 mm | 3.2913 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 131,000,000 mm⁴ | 314.7288 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 66.5 kg/m | 44.6859 lb/ft |