RHS 180×100×11
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 | 180 mm | 7.0866 in |
| Width | 100 mm | 3.937 in |
| Thickness, t | 11 mm | 0.433071 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 21,800,000 mm⁴ | 52.3747 in⁴ |
| Elastic modulus, Sₓ | 243,000 mm³ | 14.8288 in³ |
| Plastic modulus, Zₓ | 311,000 mm³ | 18.9784 in³ |
| Radius of gyration, rₓ | 62.7 mm | 2.4685 in |
| Distance to top fibre | 90 mm | 3.5433 in |
| Distance to bottom fibre | 90 mm | 3.5433 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 8,390,000 mm⁴ | 20.1571 in⁴ |
| Elastic modulus, S_y | 168,000 mm³ | 10.252 in³ |
| Plastic modulus, Z_y | 203,000 mm³ | 12.3878 in³ |
| Radius of gyration, r_y | 38.9 mm | 1.5315 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 20,000,000 mm⁴ | 48.0502 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 43.5 kg/m | 29.2307 lb/ft |