L8X4X7/8 Steel Angle — Section Properties
Dimensions
| Property | Value | Unit |
|---|---|---|
| Leg Length (leg) | 8 | 20.32 cm |
| Leg Thickness (t) | 0.875 | 2.22 cm |
| Area (A) | 9.79 in² | 63.2 cm² |
| Weight | 33.1 lb/ft | 49.3 kg/m |
Elastic Section Properties
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 62.6 | 10.5 | in⁴ |
| Elastic Section Modulus (S) | 12.5 | 3.51 | in³ |
| Plastic Section Modulus (Z) | 21.7 | 6.77 | in³ |
| Radius of Gyration (r) | 2.53 | 1.04 | in |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 2.51 | in⁴ |
| Warping Constant (Cw) | 8.89 | 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 L8X4X7/8 angle? 33.1 lb/ft (49.3 kg/m).
What is the section modulus of L8X4X7/8? Sx = 12.5 in³, Zx = 21.7 in³ (strong axis). Sy = 3.51 in³, Zy = 6.77 in³ (weak axis).
What steel grade is standard for L8X4X7/8? ASTM A36 (Fy = 36 ksi) for angles. Verify with mill certificate.
What is the moment of inertia of L8X4X7/8? Ix = 62.6 in⁴ about the strong axis and Iy = 10.5 in⁴ about the weak axis. The radius of gyration is rx = 2.53 in and ry = 1.04 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.