RHS 80×40×2.9
Rectangular hollow sections from British-Sections-1 and Eurocode 3 UK shared angle/hollow tables.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Height | 80 mm | 3.1496 in |
| Width | 40 mm | 1.5748 in |
| Thickness, t | 2.9 mm | 0.114173 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 527,000 mm⁴ | 1.2661 in⁴ |
| Elastic modulus, Sₓ | 13,200 mm³ | 0.805513 in³ |
| Plastic modulus, Zₓ | 16,600 mm³ | 1.013 in³ |
| Radius of gyration, rₓ | 28.4 mm | 1.1181 in |
| Distance to top fibre | 40 mm | 1.5748 in |
| Distance to bottom fibre | 40 mm | 1.5748 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 175,000 mm⁴ | 0.420439 in⁴ |
| Elastic modulus, S_y | 8,770 mm³ | 0.535178 in³ |
| Plastic modulus, Z_y | 10,100 mm³ | 0.61634 in³ |
| Radius of gyration, r_y | 16.4 mm | 0.645669 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 426,000 mm⁴ | 1.0235 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 5.13 kg/m | 3.4472 lb/ft |