WT18X67.5 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 17.8 | 452.1 mm |
| Flange Width (bf) | 12 | 30.48 cm |
| Flange Thickness (tf) | 0.79 | 20.1 mm |
| Web Thickness (tw) | 0.6 | 15.2 mm |
| Area (A) | 19.9 in² | 128.4 cm² |
| Weight | 67.5 lb/ft | 100.5 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 637 | 113 | in⁴ |
| Elastic Section Modulus (S) | 49.7 | 18.9 | in³ |
| Plastic Section Modulus (Z) | 90.1 | 29.8 | in³ |
| Radius of Gyration (r) | 5.66 | 2.38 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 3.48 | in⁴ |
| Warping Constant (Cw) | 37.3 | 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 WT18X67.5 tee? 67.5 lb/ft (100.5 kg/m).
What is the section modulus of WT18X67.5? Sx = 49.7 in³, Zx = 90.1 in³ (strong axis). Sy = 18.9 in³, Zy = 29.8 in³ (weak axis).
What steel grade is standard for WT18X67.5? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT18X67.5? Ix = 637 in⁴ about the strong axis and Iy = 113 in⁴ about the weak axis. The radius of gyration is rx = 5.66 in and ry = 2.38 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.