C12X30 Steel C-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 12 | 304.8 mm |
| Flange Width (bf) | 3.17 | 8.05 cm |
| Flange Thickness (tf) | 0.501 | 12.7 mm |
| Web Thickness (tw) | 0.51 | 13.0 mm |
| Area (A) | 8.81 in² | 56.8 cm² |
| Weight | 30 lb/ft | 44.6 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 162 | 5.12 | in⁴ |
| Elastic Section Modulus (S) | 27 | 2.05 | in³ |
| Plastic Section Modulus (Z) | 33.8 | 4.32 | in³ |
| Radius of Gyration (r) | 4.29 | 0.762 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.861 | in⁴ |
| Warping Constant (Cw) | 151 | in⁶ |
| Distance Between Flange Centroids (ho) | 11.5 | in |
| Effective Radius (rts) | 1.01 | in |
Design Resources
- Beam Capacity Calculator — Check C12X30 for your span and loads
- Section Properties Database — Compare with other sections
- Steel Beam Sizes Reference — Full dimension table
- Steel Grades Reference — Material properties
Frequently Asked Questions
What is the weight of a C12X30 channel? 30 lb/ft (44.6 kg/m).
What is the section modulus of C12X30? Sx = 27 in³, Zx = 33.8 in³ (strong axis). Sy = 2.05 in³, Zy = 4.32 in³ (weak axis).
What steel grade is standard for C12X30? ASTM A36 (Fy = 36 ksi) for channels. Verify with mill certificate.
What is the moment of inertia of C12X30? Ix = 162 in⁴ about the strong axis and Iy = 5.12 in⁴ about the weak axis. The radius of gyration is rx = 4.29 in and ry = 0.762 in.
Related Pages
Educational reference only. Verify all section properties against the current AISC Manual and mill certificates before design. Results are PRELIMINARY — NOT FOR CONSTRUCTION.