CHS 355.6×8
Circular 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 |
|---|---|---|
| Thickness, t | 8 mm | 0.314961 in |
| Outside diameter | 355.6 mm | 14 in |
| Inside diameter | 339.6 mm | 13.3701 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 132,000,000 mm⁴ | 317.1313 in⁴ |
| Elastic modulus, Sₓ | 742,000 mm³ | 45.2796 in³ |
| Plastic modulus, Zₓ | 967,000 mm³ | 59.01 in³ |
| Radius of gyration, rₓ | 123 mm | 4.8425 in |
| Distance to top fibre | 177.8 mm | 7 in |
| Distance to bottom fibre | 177.8 mm | 7 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 132,000,000 mm⁴ | 317.1313 in⁴ |
| Elastic modulus, S_y | 742,000 mm³ | 45.2796 in³ |
| Plastic modulus, Z_y | 967,000 mm³ | 59.01 in³ |
| Radius of gyration, r_y | 123 mm | 4.8425 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 264,000,000 mm⁴ | 634.2625 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 68.6 kg/m | 46.0971 lb/ft |