C7X9.8 Steel C-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 7 | 177.8 mm |
| Flange Width (bf) | 2.09 | 5.31 cm |
| Flange Thickness (tf) | 0.366 | 9.3 mm |
| Web Thickness (tw) | 0.21 | 5.3 mm |
| Area (A) | 2.87 in² | 18.5 cm² |
| Weight | 9.8 lb/ft | 14.6 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 21.2 | 0.957 | in⁴ |
| Elastic Section Modulus (S) | 6.07 | 0.617 | in³ |
| Plastic Section Modulus (Z) | 7.19 | 1.26 | in³ |
| Radius of Gyration (r) | 2.72 | 0.578 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.1 | in⁴ |
| Warping Constant (Cw) | 9.15 | in⁶ |
| Distance Between Flange Centroids (ho) | 6.63 | in |
| Effective Radius (rts) | 0.698 | in |
Design Resources
- Beam Capacity Calculator — Check C7X9.8 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 C7X9.8 channel? 9.8 lb/ft (14.6 kg/m).
What is the section modulus of C7X9.8? Sx = 6.07 in³, Zx = 7.19 in³ (strong axis). Sy = 0.617 in³, Zy = 1.26 in³ (weak axis).
What steel grade is standard for C7X9.8? ASTM A36 (Fy = 36 ksi) for channels. Verify with mill certificate.
What is the moment of inertia of C7X9.8? Ix = 21.2 in⁴ about the strong axis and Iy = 0.957 in⁴ about the weak axis. The radius of gyration is rx = 2.72 in and ry = 0.578 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.