WT18X131 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 18.4 | 467.4 mm |
| Flange Width (bf) | 16.6 | 42.16 cm |
| Flange Thickness (tf) | 1.44 | 36.6 mm |
| Web Thickness (tw) | 0.84 | 21.3 mm |
| Area (A) | 38.5 in² | 248.4 cm² |
| Weight | 131 lb/ft | 194.9 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1110 | 545 | in⁴ |
| Elastic Section Modulus (S) | 77.5 | 65.8 | in³ |
| Plastic Section Modulus (Z) | 137 | 102 | in³ |
| Radius of Gyration (r) | 5.36 | 3.76 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 20.8 | in⁴ |
| Warping Constant (Cw) | 185 | 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 WT18X131 tee? 131 lb/ft (194.9 kg/m).
What is the section modulus of WT18X131? Sx = 77.5 in³, Zx = 137 in³ (strong axis). Sy = 65.8 in³, Zy = 102 in³ (weak axis).
What steel grade is standard for WT18X131? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT18X131? Ix = 1110 in⁴ about the strong axis and Iy = 545 in⁴ about the weak axis. The radius of gyration is rx = 5.36 in and ry = 3.76 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.