RHS 350×200×8.8
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 | 8.8 mm | 0.346457 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 154,000,000 mm⁴ | 369.9865 in⁴ |
| Elastic modulus, Sₓ | 878,000 mm³ | 53.5788 in³ |
| Plastic modulus, Zₓ | 1,070,000 mm³ | 65.2954 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 | 64,400,000 mm⁴ | 154.7216 in⁴ |
| Elastic modulus, S_y | 644,000 mm³ | 39.2993 in³ |
| Plastic modulus, Z_y | 727,000 mm³ | 44.3643 in³ |
| Radius of gyration, r_y | 83.2 mm | 3.2756 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 143,000,000 mm⁴ | 343.5589 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 72.9 kg/m | 48.9865 lb/ft |