2L5×3×1/4×3/4SLBB double 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.
2L5×3×1/4×3/4SLBB has a 5 in. long leg and a 3 in. short leg, 1/4 in. thick, in contact back to back.
It is a double angle set with its short legs back-to-back.
At 13.2 lb per foot it is one of the 30 2L5×3 sizes, which run from 13.2 to 25.6 lb/ft.
For strong-axis bending its section modulus is Sx = 1.2 in³ and its moment of inertia Ix = 2.82 in⁴, with a plastic modulus Zx = 2.1 in³.
Detailing dimensions
| Long leg | 5" |
|---|---|
| Short leg | 3" |
| Thickness (t) | 1/4" |
Section properties
| Weight | 13.2 lb/ft |
|---|---|
| Area (A) | 3.88 in² |
| Ix | 2.82 in⁴ |
| Sx | 1.2 in³ |
| Zx | 2.1 in³ |
| rx | 0.853 in |
| Iy | 25.8 in⁴ |
| Sy | 4.8 in³ |
| Zy | 7.82 in³ |
| ry | 2.58 in |
Other 2L5×3 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
All 2L5×3 sizes and dimensions →
Similar weight double angles
Comparable 13.2 lb/ft sections in other double 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 2L5×3×1/4×3/4SLBB cut, formed, or fabricated? Huntington Steel & Supply Co.
Browse more: Double angles · Steel Beam Size Chart