C3X3.5 Steel C-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 3 | 76.2 mm |
| Flange Width (bf) | 1.37 | 3.48 cm |
| Flange Thickness (tf) | 0.273 | 6.9 mm |
| Web Thickness (tw) | 0.132 | 3.4 mm |
| Area (A) | 1.09 in² | 7.0 cm² |
| Weight | 3.5 lb/ft | 5.2 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1.57 | 0.169 | in⁴ |
| Elastic Section Modulus (S) | 1.04 | 0.182 | in³ |
| Plastic Section Modulus (Z) | 1.24 | 0.364 | in³ |
| Radius of Gyration (r) | 1.2 | 0.394 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.023 | in⁴ |
| Warping Constant (Cw) | 0.276 | in⁶ |
| Distance Between Flange Centroids (ho) | 2.73 | in |
| Effective Radius (rts) | 0.456 | in |
Design Resources
- Beam Capacity Calculator — Check C3X3.5 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 C3X3.5 channel? 3.5 lb/ft (5.2 kg/m).
What is the section modulus of C3X3.5? Sx = 1.04 in³, Zx = 1.24 in³ (strong axis). Sy = 0.182 in³, Zy = 0.364 in³ (weak axis).
What steel grade is standard for C3X3.5? ASTM A36 (Fy = 36 ksi) for channels. Verify with mill certificate.
What is the moment of inertia of C3X3.5? Ix = 1.57 in⁴ about the strong axis and Iy = 0.169 in⁴ about the weak axis. The radius of gyration is rx = 1.2 in and ry = 0.394 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.