WT4X12 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 3.97 | 100.8 mm |
| Flange Width (bf) | 6.5 | 16.51 cm |
| Flange Thickness (tf) | 0.4 | 10.2 mm |
| Web Thickness (tw) | 0.245 | 6.2 mm |
| Area (A) | 3.54 in² | 22.8 cm² |
| Weight | 12 lb/ft | 17.9 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 3.53 | 9.14 | in⁴ |
| Elastic Section Modulus (S) | 1.08 | 2.81 | in³ |
| Plastic Section Modulus (Z) | 1.98 | 4.28 | in³ |
| Radius of Gyration (r) | 0.999 | 1.61 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.173 | in⁴ |
| Warping Constant (Cw) | 0.144 | 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 WT4X12 tee? 12 lb/ft (17.9 kg/m).
What is the section modulus of WT4X12? Sx = 1.08 in³, Zx = 1.98 in³ (strong axis). Sy = 2.81 in³, Zy = 4.28 in³ (weak axis).
What steel grade is standard for WT4X12? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT4X12? Ix = 3.53 in⁴ about the strong axis and Iy = 9.14 in⁴ about the weak axis. The radius of gyration is rx = 0.999 in and ry = 1.61 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.