RHS 300×250×8.8
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 | 300 mm | 11.811 in |
| Width | 250 mm | 9.8425 in |
| Thickness, t | 8.8 mm | 0.346457 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 124,000,000 mm⁴ | 297.9112 in⁴ |
| Elastic modulus, Sₓ | 829,000 mm³ | 50.5887 in³ |
| Plastic modulus, Zₓ | 979,000 mm³ | 59.7422 in³ |
| Radius of gyration, rₓ | 116 mm | 4.5669 in |
| Distance to top fibre | 150 mm | 5.9055 in |
| Distance to bottom fibre | 150 mm | 5.9055 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 93,900,000 mm⁴ | 225.5957 in⁴ |
| Elastic modulus, S_y | 751,000 mm³ | 45.8288 in³ |
| Plastic modulus, Z_y | 864,000 mm³ | 52.7245 in³ |
| Radius of gyration, r_y | 101 mm | 3.9764 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 166,000,000 mm⁴ | 398.8166 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 72.9 kg/m | 48.9865 lb/ft |