C12x20.7
Channels from AISC Shapes Database v16.0. Also designated C310X30.8.
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 | 74.7 mm | 2.94 in |
| Web thickness, t_w | 7.16 mm | 0.282 in |
| Flange thickness, t_f | 12.7 mm | 0.501 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 53,700,000 mm⁴ | 129 in⁴ |
| Elastic modulus, Sₓ | 352,000 mm³ | 21.5 in³ |
| Plastic modulus, Zₓ | 420,000 mm³ | 25.6 in³ |
| Radius of gyration, rₓ | 117 mm | 4.61 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 | 1,610,000 mm⁴ | 3.86 in⁴ |
| Elastic modulus, S_y | 28,200 mm³ | 1.72 in³ |
| Plastic modulus, Z_y | 56,900 mm³ | 3.47 in³ |
| Radius of gyration, r_y | 20.2 mm | 0.797 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 154,000 mm⁴ | 0.369 in⁴ |
| Warping constant, C_w | 3.01000e+10 mm⁶ | 112 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 30.8 kg/m | 20.7 lb/ft |