S12x31.8
American standard beams from AISC Shapes Database v16.0. Also designated S310X47.3.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 305 mm | 12 in |
| Flange width, b_f | 127 mm | 5 in |
| Web thickness, t_w | 8.89 mm | 0.35 in |
| Flange thickness, t_f | 13.8 mm | 0.544 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 90,300,000 mm⁴ | 217 in⁴ |
| Elastic modulus, Sₓ | 593,000 mm³ | 36.2 in³ |
| Plastic modulus, Zₓ | 685,000 mm³ | 41.8 in³ |
| Radius of gyration, rₓ | 123 mm | 4.83 in |
| Distance to top fibre | 152.5 mm | 6 in |
| Distance to bottom fibre | 152.5 mm | 6 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 3,880,000 mm⁴ | 9.33 in⁴ |
| Elastic modulus, S_y | 61,100 mm³ | 3.73 in³ |
| Plastic modulus, Z_y | 106,000 mm³ | 6.44 in³ |
| Radius of gyration, r_y | 25.4 mm | 1 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 365,000 mm⁴ | 0.878 in⁴ |
| Warping constant, C_w | 8.22000e+10 mm⁶ | 306 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 47.3 kg/m | 31.8 lb/ft |