2L6×4×7/16×3/4LLBB 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.
2L6×4×7/16×3/4LLBB has a 6 in. long leg and a 4 in. short leg, 7/16 in. thick, in contact back to back.
It is a double angle set with its long legs back-to-back.
At 28.6 lb per foot it is one of the 48 2L6×4 sizes, which run from 20.6 to 54.4 lb/ft.
For strong-axis bending its section modulus is Sx = 7.62 in³ and its moment of inertia Ix = 30.8 in⁴, with a plastic modulus Zx = 13.6 in³.
Detailing dimensions
| Long leg | 6" |
|---|---|
| Short leg | 4" |
| Thickness (t) | 7/16" |
Section properties
| Weight | 28.6 lb/ft |
|---|---|
| Area (A) | 8.36 in² |
| Ix | 30.8 in⁴ |
| Sx | 7.62 in³ |
| Zx | 13.6 in³ |
| rx | 1.92 in |
| Iy | 25.9 in⁴ |
| Sy | 5.92 in³ |
| Zy | 11.1 in³ |
| ry | 1.76 in |
Other 2L6×4 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
All 2L6×4 sizes and dimensions →
Similar weight double angles
Comparable 28.6 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 2L6×4×7/16×3/4LLBB cut, formed, or fabricated? Huntington Steel & Supply Co.
Browse more: Double angles · Steel Beam Size Chart