RHS 100×50×7.1
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 | 100 mm | 3.937 in |
| Width | 50 mm | 1.9685 in |
| Thickness, t | 7.1 mm | 0.279528 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 2,140,000 mm⁴ | 5.1414 in⁴ |
| Elastic modulus, Sₓ | 42,700 mm³ | 2.6057 in³ |
| Plastic modulus, Zₓ | 56,300 mm³ | 3.4356 in³ |
| Radius of gyration, rₓ | 33.8 mm | 1.3307 in |
| Distance to top fibre | 50 mm | 1.9685 in |
| Distance to bottom fibre | 50 mm | 1.9685 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 675,000 mm⁴ | 1.6217 in⁴ |
| Elastic modulus, S_y | 27,000 mm³ | 1.6476 in³ |
| Plastic modulus, Z_y | 33,500 mm³ | 2.0443 in³ |
| Radius of gyration, r_y | 19 mm | 0.748031 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,730,000 mm⁴ | 4.1563 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 14.7 kg/m | 9.8779 lb/ft |