RHS 400×200×16
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 | 400 mm | 15.748 in |
| Width | 200 mm | 7.874 in |
| Thickness, t | 16 mm | 0.629921 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 357,000,000 mm⁴ | 857.6959 in⁴ |
| Elastic modulus, Sₓ | 1,790,000 mm³ | 109.2325 in³ |
| Plastic modulus, Zₓ | 2,260,000 mm³ | 137.9137 in³ |
| Radius of gyration, rₓ | 141 mm | 5.5512 in |
| Distance to top fibre | 200 mm | 7.874 in |
| Distance to bottom fibre | 200 mm | 7.874 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 118,000,000 mm⁴ | 283.4961 in⁴ |
| Elastic modulus, S_y | 1,180,000 mm³ | 72.008 in³ |
| Plastic modulus, Z_y | 1,370,000 mm³ | 83.6025 in³ |
| Radius of gyration, r_y | 81.3 mm | 3.2008 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 289,000,000 mm⁴ | 694.3253 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 141 kg/m | 94.7476 lb/ft |