L7X4X3/4 Steel Angle — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Leg Length (leg) | 7 | 17.78 cm |
| Leg Thickness (t) | 0.75 | 1.91 cm |
| Area (A) | 7.74 in² | 49.9 cm² |
| Weight | 26.2 lb/ft | 39.0 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 37.8 | 9 | in⁴ |
| Elastic Section Modulus (S) | 8.39 | 3.01 | in³ |
| Plastic Section Modulus (Z) | 14.8 | 5.6 | in³ |
| Radius of Gyration (r) | 2.21 | 1.08 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 1.47 | in⁴ |
| Warping Constant (Cw) | 3.97 | 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 L7X4X3/4 angle? 26.2 lb/ft (39.0 kg/m).
What is the section modulus of L7X4X3/4? Sx = 8.39 in³, Zx = 14.8 in³ (strong axis). Sy = 3.01 in³, Zy = 5.6 in³ (weak axis).
What steel grade is standard for L7X4X3/4? ASTM A36 (Fy = 36 ksi) for angles. Verify with mill certificate.
What is the moment of inertia of L7X4X3/4? Ix = 37.8 in⁴ about the strong axis and Iy = 9 in⁴ about the weak axis. The radius of gyration is rx = 2.21 in and ry = 1.08 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.