RHS 350×250×16
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 | 250 mm | 9.8425 in |
| Thickness, t | 16 mm | 0.629921 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 300,000,000 mm⁴ | 720.7529 in⁴ |
| Elastic modulus, Sₓ | 1,720,000 mm³ | 104.9608 in³ |
| Plastic modulus, Zₓ | 2,100,000 mm³ | 128.1499 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 | 177,000,000 mm⁴ | 425.2442 in⁴ |
| Elastic modulus, S_y | 1,410,000 mm³ | 86.0435 in³ |
| Plastic modulus, Z_y | 1,660,000 mm³ | 101.2994 in³ |
| Radius of gyration, r_y | 99.3 mm | 3.9094 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 353,000,000 mm⁴ | 848.0859 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 141 kg/m | 94.7476 lb/ft |