WT12X42 Steel WT-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 12.1 | 307.3 mm |
| Flange Width (bf) | 9.02 | 22.91 cm |
| Flange Thickness (tf) | 0.77 | 19.6 mm |
| Web Thickness (tw) | 0.47 | 11.9 mm |
| Area (A) | 12.4 in² | 80.0 cm² |
| Weight | 42 lb/ft | 62.5 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 166 | 47.2 | in⁴ |
| Elastic Section Modulus (S) | 18.3 | 10.5 | in³ |
| Plastic Section Modulus (Z) | 32.5 | 16.3 | in³ |
| Radius of Gyration (r) | 3.67 | 1.95 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 1.84 | in⁴ |
| Warping Constant (Cw) | 6.9 | 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 WT12X42 tee? 42 lb/ft (62.5 kg/m).
What is the section modulus of WT12X42? Sx = 18.3 in³, Zx = 32.5 in³ (strong axis). Sy = 10.5 in³, Zy = 16.3 in³ (weak axis).
What steel grade is standard for WT12X42? ASTM A992 (Fy = 50 ksi, Fu = 65 ksi) for WT-shapes. Verify with mill certificate.
What is the moment of inertia of WT12X42? Ix = 166 in⁴ about the strong axis and Iy = 47.2 in⁴ about the weak axis. The radius of gyration is rx = 3.67 in and ry = 1.95 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.