C3X5 Steel C-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 3 | 76.2 mm |
| Flange Width (bf) | 1.5 | 3.81 cm |
| Flange Thickness (tf) | 0.273 | 6.9 mm |
| Web Thickness (tw) | 0.258 | 6.6 mm |
| Area (A) | 1.47 in² | 9.5 cm² |
| Weight | 5 lb/ft | 7.4 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1.85 | 0.241 | in⁴ |
| Elastic Section Modulus (S) | 1.23 | 0.228 | in³ |
| Plastic Section Modulus (Z) | 1.52 | 0.464 | in³ |
| Radius of Gyration (r) | 1.12 | 0.405 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.043 | in⁴ |
| Warping Constant (Cw) | 0.379 | in⁶ |
| Distance Between Flange Centroids (ho) | 2.73 | in |
| Effective Radius (rts) | 0.496 | in |
Design Resources
- Beam Capacity Calculator — Check C3X5 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 C3X5 channel? 5 lb/ft (7.4 kg/m).
What is the section modulus of C3X5? Sx = 1.23 in³, Zx = 1.52 in³ (strong axis). Sy = 0.228 in³, Zy = 0.464 in³ (weak axis).
What steel grade is standard for C3X5? ASTM A36 (Fy = 36 ksi) for channels. Verify with mill certificate.
What is the moment of inertia of C3X5? Ix = 1.85 in⁴ about the strong axis and Iy = 0.241 in⁴ about the weak axis. The radius of gyration is rx = 1.12 in and ry = 0.405 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.