S24X121 Steel S-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 24.5 | 622.3 mm |
| Flange Width (bf) | 8.05 | 20.45 cm |
| Flange Thickness (tf) | 1.09 | 27.7 mm |
| Web Thickness (tw) | 0.8 | 20.3 mm |
| Area (A) | 35.5 in² | 229.0 cm² |
| Weight | 121 lb/ft | 180.1 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 3160 | 83 | in⁴ |
| Elastic Section Modulus (S) | 258 | 20.6 | in³ |
| Plastic Section Modulus (Z) | 306 | 36.3 | in³ |
| Radius of Gyration (r) | 9.43 | 1.53 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 12.8 | in⁴ |
| Warping Constant (Cw) | 11400 | in⁶ |
| Distance Between Flange Centroids (ho) | 23.4 | in |
| Effective Radius (rts) | 1.94 | in |
Design Resources
- Beam Capacity Calculator — Check S24X121 for your span and loads
- Column Capacity Calculator — Check S24X121 as a column
- 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 S24X121 beam? 121 lb/ft (180.1 kg/m).
What is the section modulus of S24X121? Sx = 258 in³, Zx = 306 in³ (strong axis). Sy = 20.6 in³, Zy = 36.3 in³ (weak axis).
What steel grade is standard for S24X121? ASTM A36 (Fy = 36 ksi) for S-shapes. Verify with mill certificate.
What is the moment of inertia of S24X121? Ix = 3160 in⁴ about the strong axis and Iy = 83 in⁴ about the weak axis. The radius of gyration is rx = 9.43 in and ry = 1.53 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.