ST4X11.5 Steel ST-shape — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 4 | 101.6 mm |
| Flange Width (bf) | 4.17 | 10.59 cm |
| Flange Thickness (tf) | 0.425 | 10.8 mm |
| Web Thickness (tw) | 0.441 | 11.2 mm |
| Area (A) | 3.38 in² | 21.8 cm² |
| Weight | 11.5 lb/ft | 17.1 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 5 | 2.13 | in⁴ |
| Elastic Section Modulus (S) | 1.76 | 1.02 | in³ |
| Plastic Section Modulus (Z) | 3.19 | 1.84 | in³ |
| Radius of Gyration (r) | 1.22 | 0.795 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 0.271 | in⁴ |
| Warping Constant (Cw) | 0.168 | 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 ST4X11.5 tee? 11.5 lb/ft (17.1 kg/m).
What is the section modulus of ST4X11.5? Sx = 1.76 in³, Zx = 3.19 in³ (strong axis). Sy = 1.02 in³, Zy = 1.84 in³ (weak axis).
What steel grade is standard for ST4X11.5? ASTM A36 (Fy = 36 ksi) for ST-shapes. Verify with mill certificate.
What is the moment of inertia of ST4X11.5? Ix = 5 in⁴ about the strong axis and Iy = 2.13 in⁴ about the weak axis. The radius of gyration is rx = 1.22 in and ry = 0.795 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.