WT18X105 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 18.3 | 464.8 mm |
| Flange Width (bf) | 12.2 | 30.99 cm |
| Flange Thickness (tf) | 1.36 | 34.5 mm |
| Web Thickness (tw) | 0.83 | 21.1 mm |
| Area (A) | 30.9 in² | 199.4 cm² |
| Weight | 105 lb/ft | 156.3 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 985 | 206 | in⁴ |
| Elastic Section Modulus (S) | 73.1 | 33.8 | in³ |
| Plastic Section Modulus (Z) | 131 | 53.4 | in³ |
| Radius of Gyration (r) | 5.65 | 2.58 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 13.9 | in⁴ |
| Warping Constant (Cw) | 119 | 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 WT18X105 tee? 105 lb/ft (156.3 kg/m).
What is the section modulus of WT18X105? Sx = 73.1 in³, Zx = 131 in³ (strong axis). Sy = 33.8 in³, Zy = 53.4 in³ (weak axis).
What steel grade is standard for WT18X105? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT18X105? Ix = 985 in⁴ about the strong axis and Iy = 206 in⁴ about the weak axis. The radius of gyration is rx = 5.65 in and ry = 2.58 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.