WT18X220.5 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 19.4 | 492.8 mm |
| Flange Width (bf) | 17 | 43.18 cm |
| Flange Thickness (tf) | 2.44 | 62.0 mm |
| Web Thickness (tw) | 1.36 | 34.5 mm |
| Area (A) | 64.9 in² | 418.7 cm² |
| Weight | 220.5 lb/ft | 328.1 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1980 | 997 | in⁴ |
| Elastic Section Modulus (S) | 134 | 117 | in³ |
| Plastic Section Modulus (Z) | 242 | 184 | in³ |
| Radius of Gyration (r) | 5.52 | 3.92 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 96.6 | in⁴ |
| Warping Constant (Cw) | 914 | 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 WT18X220.5 tee? 220.5 lb/ft (328.1 kg/m).
What is the section modulus of WT18X220.5? Sx = 134 in³, Zx = 242 in³ (strong axis). Sy = 117 in³, Zy = 184 in³ (weak axis).
What steel grade is standard for WT18X220.5? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT18X220.5? Ix = 1980 in⁴ about the strong axis and Iy = 997 in⁴ about the weak axis. The radius of gyration is rx = 5.52 in and ry = 3.92 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.