WT9X129 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 10.7 | 271.8 mm |
| Flange Width (bf) | 11.8 | 29.97 cm |
| Flange Thickness (tf) | 2.3 | 58.4 mm |
| Web Thickness (tw) | 1.28 | 32.5 mm |
| Area (A) | 38 in² | 245.2 cm² |
| Weight | 129 lb/ft | 192.0 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 298 | 314 | in⁴ |
| Elastic Section Modulus (S) | 37 | 53.4 | in³ |
| Plastic Section Modulus (Z) | 71 | 83.1 | in³ |
| Radius of Gyration (r) | 2.8 | 2.88 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 51.1 | in⁴ |
| Warping Constant (Cw) | 189 | in⁶ |
Design Resources
- 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 WT9X129 tee? 129 lb/ft (192.0 kg/m).
What is the section modulus of WT9X129? Sx = 37 in³, Zx = 71 in³ (strong axis). Sy = 53.4 in³, Zy = 83.1 in³ (weak axis).
What steel grade is standard for WT9X129? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT9X129? Ix = 298 in⁴ about the strong axis and Iy = 314 in⁴ about the weak axis. The radius of gyration is rx = 2.8 in and ry = 2.88 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.