WT7X128.5 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 8.19 | 208.0 mm |
| Flange Width (bf) | 16 | 40.64 cm |
| Flange Thickness (tf) | 1.89 | 48.0 mm |
| Web Thickness (tw) | 1.18 | 30.0 mm |
| Area (A) | 37.8 in² | 243.9 cm² |
| Weight | 128.5 lb/ft | 191.2 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 133 | 645 | in⁴ |
| Elastic Section Modulus (S) | 20.7 | 80.7 | in³ |
| Plastic Section Modulus (Z) | 43.9 | 123 | in³ |
| Radius of Gyration (r) | 1.88 | 4.13 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 39.3 | in⁴ |
| Warping Constant (Cw) | 209 | 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 WT7X128.5 tee? 128.5 lb/ft (191.2 kg/m).
What is the section modulus of WT7X128.5? Sx = 20.7 in³, Zx = 43.9 in³ (strong axis). Sy = 80.7 in³, Zy = 123 in³ (weak axis).
What steel grade is standard for WT7X128.5? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT7X128.5? Ix = 133 in⁴ about the strong axis and Iy = 645 in⁴ about the weak axis. The radius of gyration is rx = 1.88 in and ry = 4.13 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.