RHS 90×50×5.6
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 | 5.6 mm | 0.220472 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 1,380,000 mm⁴ | 3.3155 in⁴ |
| Elastic modulus, Sₓ | 30,700 mm³ | 1.8734 in³ |
| Plastic modulus, Zₓ | 39,400 mm³ | 2.4043 in³ |
| Radius of gyration, rₓ | 31.3 mm | 1.2323 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 | 530,000 mm⁴ | 1.2733 in⁴ |
| Elastic modulus, S_y | 21,200 mm³ | 1.2937 in³ |
| Plastic modulus, Z_y | 25,700 mm³ | 1.5683 in³ |
| Radius of gyration, r_y | 19.4 mm | 0.76378 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,270,000 mm⁴ | 3.0512 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 11.1 kg/m | 7.4589 lb/ft |