WT3X12.5 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 3.19 | 81.0 mm |
| Flange Width (bf) | 6.08 | 15.44 cm |
| Flange Thickness (tf) | 0.455 | 11.6 mm |
| Web Thickness (tw) | 0.32 | 8.1 mm |
| Area (A) | 3.67 in² | 23.7 cm² |
| Weight | 12.5 lb/ft | 18.6 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 2.29 | 8.53 | in⁴ |
| Elastic Section Modulus (S) | 0.886 | 2.81 | in³ |
| Plastic Section Modulus (Z) | 1.68 | 4.28 | in³ |
| Radius of Gyration (r) | 0.789 | 1.52 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.229 | in⁴ |
| Warping Constant (Cw) | 0.171 | 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 WT3X12.5 tee? 12.5 lb/ft (18.6 kg/m).
What is the section modulus of WT3X12.5? Sx = 0.886 in³, Zx = 1.68 in³ (strong axis). Sy = 2.81 in³, Zy = 4.28 in³ (weak axis).
What steel grade is standard for WT3X12.5? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT3X12.5? Ix = 2.29 in⁴ about the strong axis and Iy = 8.53 in⁴ about the weak axis. The radius of gyration is rx = 0.789 in and ry = 1.52 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.