S20X86 Steel S-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 20.3 | 515.6 mm |
| Flange Width (bf) | 7.06 | 17.93 cm |
| Flange Thickness (tf) | 0.92 | 23.4 mm |
| Web Thickness (tw) | 0.66 | 16.8 mm |
| Area (A) | 25.3 in² | 163.2 cm² |
| Weight | 86 lb/ft | 128.0 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1570 | 46.6 | in⁴ |
| Elastic Section Modulus (S) | 155 | 13.2 | in³ |
| Plastic Section Modulus (Z) | 183 | 23.1 | in³ |
| Radius of Gyration (r) | 7.89 | 1.36 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 6.65 | in⁴ |
| Warping Constant (Cw) | 4370 | in⁶ |
| Distance Between Flange Centroids (ho) | 19.4 | in |
| Effective Radius (rts) | 1.71 | in |
Design Resources
- Beam Capacity Calculator — Check S20X86 for your span and loads
- Column Capacity Calculator — Check S20X86 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 S20X86 beam? 86 lb/ft (128.0 kg/m).
What is the section modulus of S20X86? Sx = 155 in³, Zx = 183 in³ (strong axis). Sy = 13.2 in³, Zy = 23.1 in³ (weak axis).
What steel grade is standard for S20X86? ASTM A36 (Fy = 36 ksi) for S-shapes. Verify with mill certificate.
What is the moment of inertia of S20X86? Ix = 1570 in⁴ about the strong axis and Iy = 46.6 in⁴ about the weak axis. The radius of gyration is rx = 7.89 in and ry = 1.36 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.