L4×3×5/16 angle
Detailing dimensions and section properties from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.
L4×3×5/16 has a 4 in. long leg and a 3 in. short leg, 5/16 in. thick.
At 7.2 lb per foot it is one of the 5 L4×3 sizes, which run from 5.8 to 13.6 lb/ft.
For strong-axis bending its section modulus is Sx = 1.22 in³ and its moment of inertia Ix = 3.36 in⁴, with a plastic modulus Zx = 2.19 in³.
Detailing dimensions
| Long leg | 4" |
|---|---|
| Short leg | 3" |
| Thickness (t) | 5/16" |
| k (detailing) | 11/16" |
Section properties
| Weight | 7.2 lb/ft |
|---|---|
| Area (A) | 2.09 in² |
| Ix | 3.36 in⁴ |
| Sx | 1.22 in³ |
| Zx | 2.19 in³ |
| rx | 1.27 in |
| Iy | 1.62 in⁴ |
| Sy | 0.721 in³ |
| Zy | 1.28 in³ |
| ry | 0.88 in |
| J | 0.0731 in⁴ |
Other L4×3 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
All L4×3 sizes and dimensions →
Similar weight angles
Comparable 7.2 lb/ft sections in other angle sizes.
Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need L4×3×5/16 cut, formed, or fabricated? Huntington Steel & Supply Co.
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