WT3X8 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 3.14 | 79.8 mm |
| Flange Width (bf) | 4.03 | 10.24 cm |
| Flange Thickness (tf) | 0.405 | 10.3 mm |
| Web Thickness (tw) | 0.26 | 6.6 mm |
| Area (A) | 2.37 in² | 15.3 cm² |
| Weight | 8 lb/ft | 11.9 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1.69 | 2.21 | in⁴ |
| Elastic Section Modulus (S) | 0.685 | 1.1 | in³ |
| Plastic Section Modulus (Z) | 1.25 | 1.69 | in³ |
| Radius of Gyration (r) | 0.844 | 0.966 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.111 | in⁴ |
| Warping Constant (Cw) | 0.043 | 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 WT3X8 tee? 8 lb/ft (11.9 kg/m).
What is the section modulus of WT3X8? Sx = 0.685 in³, Zx = 1.25 in³ (strong axis). Sy = 1.1 in³, Zy = 1.69 in³ (weak axis).
What steel grade is standard for WT3X8? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT3X8? Ix = 1.69 in⁴ about the strong axis and Iy = 2.21 in⁴ about the weak axis. The radius of gyration is rx = 0.844 in and ry = 0.966 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.