L8X4X3/4 Steel Angle — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Leg Length (leg) | 8 | 20.32 cm |
| Leg Thickness (t) | 0.75 | 1.91 cm |
| Area (A) | 8.49 in² | 54.8 cm² |
| Weight | 28.7 lb/ft | 42.7 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 55 | 9.37 | in⁴ |
| Elastic Section Modulus (S) | 10.9 | 3.07 | in³ |
| Plastic Section Modulus (Z) | 18.9 | 5.82 | in³ |
| Radius of Gyration (r) | 2.55 | 1.05 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 1.61 | in⁴ |
| Warping Constant (Cw) | 5.75 | in⁶ |
Design Resources
- Section Properties Database — Compare with other sections
- Steel Angles Reference — Full angle dimension table
- Steel Grades Reference — Material properties
Frequently Asked Questions
What is the weight of a L8X4X3/4 angle? 28.7 lb/ft (42.7 kg/m).
What is the section modulus of L8X4X3/4? Sx = 10.9 in³, Zx = 18.9 in³ (strong axis). Sy = 3.07 in³, Zy = 5.82 in³ (weak axis).
What steel grade is standard for L8X4X3/4? ASTM A36 (Fy = 36 ksi) for angles. Verify with mill certificate.
What is the moment of inertia of L8X4X3/4? Ix = 55 in⁴ about the strong axis and Iy = 9.37 in⁴ about the weak axis. The radius of gyration is rx = 2.55 in and ry = 1.05 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.