WT12X81 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 12.5 | 317.5 mm |
| Flange Width (bf) | 13 | 33.02 cm |
| Flange Thickness (tf) | 1.22 | 31.0 mm |
| Web Thickness (tw) | 0.705 | 17.9 mm |
| Area (A) | 23.9 in² | 154.2 cm² |
| Weight | 81 lb/ft | 120.5 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 293 | 221 | in⁴ |
| Elastic Section Modulus (S) | 29.9 | 34.2 | in³ |
| Plastic Section Modulus (Z) | 53.3 | 52.6 | in³ |
| Radius of Gyration (r) | 3.5 | 3.05 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 9.22 | in⁴ |
| Warping Constant (Cw) | 43.8 | 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 WT12X81 tee? 81 lb/ft (120.5 kg/m).
What is the section modulus of WT12X81? Sx = 29.9 in³, Zx = 53.3 in³ (strong axis). Sy = 34.2 in³, Zy = 52.6 in³ (weak axis).
What steel grade is standard for WT12X81? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT12X81? Ix = 293 in⁴ about the strong axis and Iy = 221 in⁴ about the weak axis. The radius of gyration is rx = 3.5 in and ry = 3.05 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.