RHS 300×100×5
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 | 100 mm | 3.937 in |
| Thickness, t | 5 mm | 0.19685 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 41,500,000 mm⁴ | 99.7041 in⁴ |
| Elastic modulus, Sₓ | 276,000 mm³ | 16.8426 in³ |
| Plastic modulus, Zₓ | 354,000 mm³ | 21.6024 in³ |
| Radius of gyration, rₓ | 103 mm | 4.0551 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 | 7,310,000 mm⁴ | 17.5623 in⁴ |
| Elastic modulus, S_y | 146,000 mm³ | 8.9095 in³ |
| Plastic modulus, Z_y | 161,000 mm³ | 9.8248 in³ |
| Radius of gyration, r_y | 43.4 mm | 1.7087 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 20,400,000 mm⁴ | 49.0112 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 30.4 kg/m | 20.4279 lb/ft |