RHS 300×250×8
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 mm | 0.314961 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 114,000,000 mm⁴ | 273.8861 in⁴ |
| Elastic modulus, Sₓ | 761,000 mm³ | 46.4391 in³ |
| Plastic modulus, Zₓ | 896,000 mm³ | 54.6773 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 | 86,300,000 mm⁴ | 207.3366 in⁴ |
| Elastic modulus, S_y | 690,000 mm³ | 42.1064 in³ |
| Plastic modulus, Z_y | 791,000 mm³ | 48.2698 in³ |
| Radius of gyration, r_y | 101 mm | 3.9764 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 152,000,000 mm⁴ | 365.1815 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 66.5 kg/m | 44.6859 lb/ft |