ST3X6.25 Steel ST-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 3 | 76.2 mm |
| Flange Width (bf) | 3.33 | 8.46 cm |
| Flange Thickness (tf) | 0.359 | 9.1 mm |
| Web Thickness (tw) | 0.232 | 5.9 mm |
| Area (A) | 1.83 in² | 11.8 cm² |
| Weight | 6.25 lb/ft | 9.3 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 1.26 | 0.901 | in⁴ |
| Elastic Section Modulus (S) | 0.547 | 0.541 | in³ |
| Plastic Section Modulus (Z) | 1.01 | 0.93 | in³ |
| Radius of Gyration (r) | 0.831 | 0.702 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.083 | in⁴ |
| Warping Constant (Cw) | 0.02 | 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 ST3X6.25 tee? 6.25 lb/ft (9.3 kg/m).
What is the section modulus of ST3X6.25? Sx = 0.547 in³, Zx = 1.01 in³ (strong axis). Sy = 0.541 in³, Zy = 0.93 in³ (weak axis).
What steel grade is standard for ST3X6.25? ASTM A36 (Fy = 36 ksi) for ST-shapes. Verify with mill certificate.
What is the moment of inertia of ST3X6.25? Ix = 1.26 in⁴ about the strong axis and Iy = 0.901 in⁴ about the weak axis. The radius of gyration is rx = 0.831 in and ry = 0.702 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.