RHS 220×120×8
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 | 220 mm | 8.6614 in |
| Width | 120 mm | 4.7244 in |
| Thickness, t | 8 mm | 0.314961 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 32,000,000 mm⁴ | 76.8803 in⁴ |
| Elastic modulus, Sₓ | 291,000 mm³ | 17.7579 in³ |
| Plastic modulus, Zₓ | 362,000 mm³ | 22.0906 in³ |
| Radius of gyration, rₓ | 79.1 mm | 3.1142 in |
| Distance to top fibre | 110 mm | 4.3307 in |
| Distance to bottom fibre | 110 mm | 4.3307 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 12,300,000 mm⁴ | 29.5509 in⁴ |
| Elastic modulus, S_y | 205,000 mm³ | 12.5099 in³ |
| Plastic modulus, Z_y | 236,000 mm³ | 14.4016 in³ |
| Radius of gyration, r_y | 49 mm | 1.9291 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 28,500,000 mm⁴ | 68.4715 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 40.2 kg/m | 27.0132 lb/ft |