M12.5x12.4
Miscellaneous beams from AISC Shapes Database v16.0. Also designated M318X18.5.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 318 mm | 12.5 in |
| Flange width, b_f | 95.3 mm | 3.75 in |
| Web thickness, t_w | 3.94 mm | 0.155 in |
| Flange thickness, t_f | 5.79 mm | 0.228 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 37,200,000 mm⁴ | 89.3 in⁴ |
| Elastic modulus, Sₓ | 233,000 mm³ | 14.2 in³ |
| Plastic modulus, Zₓ | 270,000 mm³ | 16.5 in³ |
| Radius of gyration, rₓ | 126 mm | 4.96 in |
| Distance to top fibre | 159 mm | 6.25 in |
| Distance to bottom fibre | 159 mm | 6.25 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 837,000 mm⁴ | 2.01 in⁴ |
| Elastic modulus, S_y | 17,500 mm³ | 1.07 in³ |
| Plastic modulus, Z_y | 27,500 mm³ | 1.68 in³ |
| Radius of gyration, r_y | 18.9 mm | 0.744 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 20,500 mm⁴ | 0.0493 in⁴ |
| Warping constant, C_w | 2.04000e+10 mm⁶ | 76 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 18.5 kg/m | 12.4 lb/ft |