MC4X13.8 Steel MC-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 4 | 101.6 mm |
| Flange Width (bf) | 2.5 | 6.35 cm |
| Flange Thickness (tf) | 0.5 | 12.7 mm |
| Web Thickness (tw) | 0.5 | 12.7 mm |
| Area (A) | 4.03 in² | 26.0 cm² |
| Weight | 13.8 lb/ft | 20.5 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 8.85 | 2.13 | in⁴ |
| Elastic Section Modulus (S) | 4.43 | 1.29 | in³ |
| Plastic Section Modulus (Z) | 5.53 | 2.4 | in³ |
| Radius of Gyration (r) | 1.48 | 0.727 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.373 | in⁴ |
| Warping Constant (Cw) | 4.84 | in⁶ |
| Distance Between Flange Centroids (ho) | 3.5 | in |
| Effective Radius (rts) | 0.851 | in |
Design Resources
- Beam Capacity Calculator — Check MC4X13.8 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 MC4X13.8 channel? 13.8 lb/ft (20.5 kg/m).
What is the section modulus of MC4X13.8? Sx = 4.43 in³, Zx = 5.53 in³ (strong axis). Sy = 1.29 in³, Zy = 2.4 in³ (weak axis).
What steel grade is standard for MC4X13.8? ASTM A36 (Fy = 36 ksi) for MC-shapes. Verify with mill certificate.
What is the moment of inertia of MC4X13.8? Ix = 8.85 in⁴ about the strong axis and Iy = 2.13 in⁴ about the weak axis. The radius of gyration is rx = 1.48 in and ry = 0.727 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.