RHS 220×120×7.1
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 | 7.1 mm | 0.279528 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 29,000,000 mm⁴ | 69.6728 in⁴ |
| Elastic modulus, Sₓ | 263,000 mm³ | 16.0492 in³ |
| Plastic modulus, Zₓ | 326,000 mm³ | 19.8937 in³ |
| Radius of gyration, rₓ | 79.6 mm | 3.1339 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 | 11,200,000 mm⁴ | 26.9081 in⁴ |
| Elastic modulus, S_y | 186,000 mm³ | 11.3504 in³ |
| Plastic modulus, Z_y | 213,000 mm³ | 12.9981 in³ |
| Radius of gyration, r_y | 49.4 mm | 1.9449 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 25,700,000 mm⁴ | 61.7445 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 35.9 kg/m | 24.1237 lb/ft |