WT18X75 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 17.9 | 454.7 mm |
| Flange Width (bf) | 12 | 30.48 cm |
| Flange Thickness (tf) | 0.94 | 23.9 mm |
| Web Thickness (tw) | 0.625 | 15.9 mm |
| Area (A) | 22.1 in² | 142.6 cm² |
| Weight | 75 lb/ft | 111.6 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 698 | 135 | in⁴ |
| Elastic Section Modulus (S) | 53.1 | 22.5 | in³ |
| Plastic Section Modulus (Z) | 95.5 | 35.4 | in³ |
| Radius of Gyration (r) | 5.62 | 2.47 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 5.04 | in⁴ |
| Warping Constant (Cw) | 46 | 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 WT18X75 tee? 75 lb/ft (111.6 kg/m).
What is the section modulus of WT18X75? Sx = 53.1 in³, Zx = 95.5 in³ (strong axis). Sy = 22.5 in³, Zy = 35.4 in³ (weak axis).
What steel grade is standard for WT18X75? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT18X75? Ix = 698 in⁴ about the strong axis and Iy = 135 in⁴ about the weak axis. The radius of gyration is rx = 5.62 in and ry = 2.47 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.