WT20X99.5 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 19.3 | 490.2 mm |
| Flange Width (bf) | 15.8 | 40.13 cm |
| Flange Thickness (tf) | 1.07 | 27.2 mm |
| Web Thickness (tw) | 0.65 | 16.5 mm |
| Area (A) | 29.2 in² | 188.4 cm² |
| Weight | 99.5 lb/ft | 148.1 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 988 | 347 | in⁴ |
| Elastic Section Modulus (S) | 66.5 | 44.1 | in³ |
| Plastic Section Modulus (Z) | 117 | 68.2 | in³ |
| Radius of Gyration (r) | 5.81 | 3.45 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 9.12 | in⁴ |
| Warping Constant (Cw) | 83.5 | 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 WT20X99.5 tee? 99.5 lb/ft (148.1 kg/m).
What is the section modulus of WT20X99.5? Sx = 66.5 in³, Zx = 117 in³ (strong axis). Sy = 44.1 in³, Zy = 68.2 in³ (weak axis).
What steel grade is standard for WT20X99.5? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT20X99.5? Ix = 988 in⁴ about the strong axis and Iy = 347 in⁴ about the weak axis. The radius of gyration is rx = 5.81 in and ry = 3.45 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.