RHS 350×150×12.5
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 | 350 mm | 13.7795 in |
| Width | 150 mm | 5.9055 in |
| Thickness, t | 12.5 mm | 0.492126 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 173,000,000 mm⁴ | 415.6342 in⁴ |
| Elastic modulus, Sₓ | 988,000 mm³ | 60.2915 in³ |
| Plastic modulus, Zₓ | 1,260,000 mm³ | 76.8899 in³ |
| Radius of gyration, rₓ | 122 mm | 4.8032 in |
| Distance to top fibre | 175 mm | 6.8898 in |
| Distance to bottom fibre | 175 mm | 6.8898 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 44,500,000 mm⁴ | 106.9117 in⁴ |
| Elastic modulus, S_y | 593,000 mm³ | 36.1871 in³ |
| Plastic modulus, Z_y | 686,000 mm³ | 41.8623 in³ |
| Radius of gyration, r_y | 61.7 mm | 2.4291 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 116,000,000 mm⁴ | 278.6911 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 91.9 kg/m | 61.7539 lb/ft |