WT18X123.5 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 18.3 | 464.8 mm |
| Flange Width (bf) | 16.5 | 41.91 cm |
| Flange Thickness (tf) | 1.35 | 34.3 mm |
| Web Thickness (tw) | 0.8 | 20.3 mm |
| Area (A) | 36.3 in² | 234.2 cm² |
| Weight | 123.5 lb/ft | 183.8 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1040 | 507 | in⁴ |
| Elastic Section Modulus (S) | 73.3 | 61.4 | in³ |
| Plastic Section Modulus (Z) | 129 | 94.8 | in³ |
| Radius of Gyration (r) | 5.36 | 3.74 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 17.3 | in⁴ |
| Warping Constant (Cw) | 155 | 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 WT18X123.5 tee? 123.5 lb/ft (183.8 kg/m).
What is the section modulus of WT18X123.5? Sx = 73.3 in³, Zx = 129 in³ (strong axis). Sy = 61.4 in³, Zy = 94.8 in³ (weak axis).
What steel grade is standard for WT18X123.5? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT18X123.5? Ix = 1040 in⁴ about the strong axis and Iy = 507 in⁴ about the weak axis. The radius of gyration is rx = 5.36 in and ry = 3.74 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.