250 UB 31
Universal beams from Australian-Sections.xlsx (Sheets 1-19).
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 251.5 mm | 9.9016 in |
| Flange width, b_f | 146.1 mm | 5.752 in |
| Web thickness, t_w | 6.1 mm | 0.240157 in |
| Flange thickness, t_f | 8.64 mm | 0.340157 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 44,400,000 mm⁴ | 106.6714 in⁴ |
| Elastic modulus, Sₓ | 353,081.511 mm³ | 21.5464 in³ |
| Plastic modulus, Zₓ | 396,000 mm³ | 24.1654 in³ |
| Radius of gyration, rₓ | 105.3565 mm | 4.1479 in |
| Distance to top fibre | 125.75 mm | 4.9508 in |
| Distance to bottom fibre | 125.75 mm | 4.9508 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 4,490,000 mm⁴ | 10.7873 in⁴ |
| Elastic modulus, S_y | 61,464.75 mm³ | 3.7508 in³ |
| Plastic modulus, Z_y | 94,500 mm³ | 5.7667 in³ |
| Radius of gyration, r_y | 33.5037 mm | 1.319 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 87,300 mm⁴ | 0.209739 in⁴ |
| Warping constant, C_w | 6.62000e+10 mm⁶ | 246.522 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 31 kg/m | 20.831 lb/ft |