WT20X105.5 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 19.7 | 500.4 mm |
| Flange Width (bf) | 11.8 | 29.97 cm |
| Flange Thickness (tf) | 1.42 | 36.1 mm |
| Web Thickness (tw) | 0.75 | 19.0 mm |
| Area (A) | 31.1 in² | 200.6 cm² |
| Weight | 105.5 lb/ft | 157.0 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1120 | 195 | in⁴ |
| Elastic Section Modulus (S) | 76.7 | 33 | in³ |
| Plastic Section Modulus (Z) | 137 | 52.1 | in³ |
| Radius of Gyration (r) | 6.01 | 2.51 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 15.2 | in⁴ |
| Warping Constant (Cw) | 113 | 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 WT20X105.5 tee? 105.5 lb/ft (157.0 kg/m).
What is the section modulus of WT20X105.5? Sx = 76.7 in³, Zx = 137 in³ (strong axis). Sy = 33 in³, Zy = 52.1 in³ (weak axis).
What steel grade is standard for WT20X105.5? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT20X105.5? Ix = 1120 in⁴ about the strong axis and Iy = 195 in⁴ about the weak axis. The radius of gyration is rx = 6.01 in and ry = 2.51 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.