WT4X15.5 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 4 | 101.6 mm |
| Flange Width (bf) | 8 | 20.32 cm |
| Flange Thickness (tf) | 0.435 | 11.0 mm |
| Web Thickness (tw) | 0.285 | 7.2 mm |
| Area (A) | 4.56 in² | 29.4 cm² |
| Weight | 15.5 lb/ft | 23.1 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 4.28 | 18.5 | in⁴ |
| Elastic Section Modulus (S) | 1.28 | 4.64 | in³ |
| Plastic Section Modulus (Z) | 2.39 | 7.03 | in³ |
| Radius of Gyration (r) | 0.969 | 2.02 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.267 | in⁴ |
| Warping Constant (Cw) | 0.327 | 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 WT4X15.5 tee? 15.5 lb/ft (23.1 kg/m).
What is the section modulus of WT4X15.5? Sx = 1.28 in³, Zx = 2.39 in³ (strong axis). Sy = 4.64 in³, Zy = 7.03 in³ (weak axis).
What steel grade is standard for WT4X15.5? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT4X15.5? Ix = 4.28 in⁴ about the strong axis and Iy = 18.5 in⁴ about the weak axis. The radius of gyration is rx = 0.969 in and ry = 2.02 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.