RHS 90×50×8.8
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 | 90 mm | 3.5433 in |
| Width | 50 mm | 1.9685 in |
| Thickness, t | 8.8 mm | 0.346457 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1,830,000 mm⁴ | 4.3966 in⁴ |
| Elastic modulus, Sₓ | 40,600 mm³ | 2.4776 in³ |
| Plastic modulus, Zₓ | 54,800 mm³ | 3.3441 in³ |
| Radius of gyration, rₓ | 29.7 mm | 1.1693 in |
| Distance to top fibre | 45 mm | 1.7717 in |
| Distance to bottom fibre | 45 mm | 1.7717 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 672,000 mm⁴ | 1.6145 in⁴ |
| Elastic modulus, S_y | 26,900 mm³ | 1.6415 in³ |
| Plastic modulus, Z_y | 34,900 mm³ | 2.1297 in³ |
| Radius of gyration, r_y | 18 mm | 0.708661 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,690,000 mm⁴ | 4.0602 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 16.3 kg/m | 10.9531 lb/ft |