C15X40 Steel C-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 15 | 381.0 mm |
| Flange Width (bf) | 3.52 | 8.94 cm |
| Flange Thickness (tf) | 0.65 | 16.5 mm |
| Web Thickness (tw) | 0.52 | 13.2 mm |
| Area (A) | 11.8 in² | 76.1 cm² |
| Weight | 40 lb/ft | 59.5 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 348 | 9.17 | in⁴ |
| Elastic Section Modulus (S) | 46.5 | 3.34 | in³ |
| Plastic Section Modulus (Z) | 57.5 | 6.84 | in³ |
| Radius of Gyration (r) | 5.43 | 0.883 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 1.45 | in⁴ |
| Warping Constant (Cw) | 410 | in⁶ |
| Distance Between Flange Centroids (ho) | 14.4 | in |
| Effective Radius (rts) | 1.15 | in |
Design Resources
- Beam Capacity Calculator — Check C15X40 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 C15X40 channel? 40 lb/ft (59.5 kg/m).
What is the section modulus of C15X40? Sx = 46.5 in³, Zx = 57.5 in³ (strong axis). Sy = 3.34 in³, Zy = 6.84 in³ (weak axis).
What steel grade is standard for C15X40? ASTM A36 (Fy = 36 ksi) for channels. Verify with mill certificate.
What is the moment of inertia of C15X40? Ix = 348 in⁴ about the strong axis and Iy = 9.17 in⁴ about the weak axis. The radius of gyration is rx = 5.43 in and ry = 0.883 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.