WT20X251.5 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 21 | 533.4 mm |
| Flange Width (bf) | 16.4 | 41.66 cm |
| Flange Thickness (tf) | 2.76 | 70.1 mm |
| Web Thickness (tw) | 1.54 | 39.1 mm |
| Area (A) | 74 in² | 477.4 cm² |
| Weight | 251.5 lb/ft | 374.3 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 2730 | 1020 | in⁴ |
| Elastic Section Modulus (S) | 174 | 124 | in³ |
| Plastic Section Modulus (Z) | 314 | 197 | in³ |
| Radius of Gyration (r) | 6.07 | 3.72 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 138 | in⁴ |
| Warping Constant (Cw) | 1400 | 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 WT20X251.5 tee? 251.5 lb/ft (374.3 kg/m).
What is the section modulus of WT20X251.5? Sx = 174 in³, Zx = 314 in³ (strong axis). Sy = 124 in³, Zy = 197 in³ (weak axis).
What steel grade is standard for WT20X251.5? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT20X251.5? Ix = 2730 in⁴ about the strong axis and Iy = 1020 in⁴ about the weak axis. The radius of gyration is rx = 6.07 in and ry = 3.72 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.