RHS 180×100×7.1
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 | 180 mm | 7.0866 in |
| Width | 100 mm | 3.937 in |
| Thickness, t | 7.1 mm | 0.279528 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 15,600,000 mm⁴ | 37.4792 in⁴ |
| Elastic modulus, Sₓ | 173,000 mm³ | 10.5571 in³ |
| Plastic modulus, Zₓ | 215,000 mm³ | 13.1201 in³ |
| Radius of gyration, rₓ | 64.7 mm | 2.5472 in |
| Distance to top fibre | 90 mm | 3.5433 in |
| Distance to bottom fibre | 90 mm | 3.5433 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 6,130,000 mm⁴ | 14.7274 in⁴ |
| Elastic modulus, S_y | 123,000 mm³ | 7.5059 in³ |
| Plastic modulus, Z_y | 142,000 mm³ | 8.6654 in³ |
| Radius of gyration, r_y | 40.6 mm | 1.5984 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 14,100,000 mm⁴ | 33.8754 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 29.2 kg/m | 19.6215 lb/ft |