RHS 250×100×8
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 | 250 mm | 9.8425 in |
| Width | 100 mm | 3.937 in |
| Thickness, t | 8 mm | 0.314961 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 39,400,000 mm⁴ | 94.6589 in⁴ |
| Elastic modulus, Sₓ | 315,000 mm³ | 19.2225 in³ |
| Plastic modulus, Zₓ | 404,000 mm³ | 24.6536 in³ |
| Radius of gyration, rₓ | 86.4 mm | 3.4016 in |
| Distance to top fibre | 125 mm | 4.9213 in |
| Distance to bottom fibre | 125 mm | 4.9213 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 9,090,000 mm⁴ | 21.8388 in⁴ |
| Elastic modulus, S_y | 182,000 mm³ | 11.1063 in³ |
| Plastic modulus, Z_y | 209,000 mm³ | 12.754 in³ |
| Radius of gyration, r_y | 41.5 mm | 1.6339 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 24,300,000 mm⁴ | 58.381 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 41.4 kg/m | 27.8195 lb/ft |