RHS 400×300×11
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 | 400 mm | 15.748 in |
| Width | 300 mm | 11.811 in |
| Thickness, t | 11 mm | 0.433071 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 343,000,000 mm⁴ | 824.0608 in⁴ |
| Elastic modulus, Sₓ | 1,720,000 mm³ | 104.9608 in³ |
| Plastic modulus, Zₓ | 2,040,000 mm³ | 124.4884 in³ |
| Radius of gyration, rₓ | 152 mm | 5.9843 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 | 220,000,000 mm⁴ | 528.5521 in⁴ |
| Elastic modulus, S_y | 1,470,000 mm³ | 89.7049 in³ |
| Plastic modulus, Z_y | 1,680,000 mm³ | 102.5199 in³ |
| Radius of gyration, r_y | 122 mm | 4.8032 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 417,000,000 mm⁴ | 1,001.847 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 116 kg/m | 77.9484 lb/ft |