RHS 400×200×8.8
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 | 400 mm | 15.748 in |
| Width | 200 mm | 7.874 in |
| Thickness, t | 8.8 mm | 0.346457 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 213,000,000 mm⁴ | 511.7345 in⁴ |
| Elastic modulus, Sₓ | 1,070,000 mm³ | 65.2954 in³ |
| Plastic modulus, Zₓ | 1,320,000 mm³ | 80.5513 in³ |
| Radius of gyration, rₓ | 145 mm | 5.7087 in |
| Distance to top fibre | 200 mm | 7.874 in |
| Distance to bottom fibre | 200 mm | 7.874 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 72,400,000 mm⁴ | 173.9417 in⁴ |
| Elastic modulus, S_y | 724,000 mm³ | 44.1812 in³ |
| Plastic modulus, Z_y | 811,000 mm³ | 49.4903 in³ |
| Radius of gyration, r_y | 84.4 mm | 3.3228 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 172,000,000 mm⁴ | 413.2317 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 79.8 kg/m | 53.6231 lb/ft |