C7X12.25 Steel C-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 7 | 177.8 mm |
| Flange Width (bf) | 2.19 | 5.56 cm |
| Flange Thickness (tf) | 0.366 | 9.3 mm |
| Web Thickness (tw) | 0.314 | 8.0 mm |
| Area (A) | 3.59 in² | 23.2 cm² |
| Weight | 12.25 lb/ft | 18.2 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 24.2 | 1.16 | in⁴ |
| Elastic Section Modulus (S) | 6.92 | 0.696 | in³ |
| Plastic Section Modulus (Z) | 8.46 | 1.42 | in³ |
| Radius of Gyration (r) | 2.59 | 0.568 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.161 | in⁴ |
| Warping Constant (Cw) | 11.2 | in⁶ |
| Distance Between Flange Centroids (ho) | 6.63 | in |
| Effective Radius (rts) | 0.722 | in |
Design Resources
- Beam Capacity Calculator — Check C7X12.25 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 C7X12.25 channel? 12.25 lb/ft (18.2 kg/m).
What is the section modulus of C7X12.25? Sx = 6.92 in³, Zx = 8.46 in³ (strong axis). Sy = 0.696 in³, Zy = 1.42 in³ (weak axis).
What steel grade is standard for C7X12.25? ASTM A36 (Fy = 36 ksi) for channels. Verify with mill certificate.
What is the moment of inertia of C7X12.25? Ix = 24.2 in⁴ about the strong axis and Iy = 1.16 in⁴ about the weak axis. The radius of gyration is rx = 2.59 in and ry = 0.568 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.