2L5×3-1/2×5/16×3/4LLBB 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.

2L5×3-1/2×5/16×3/4LLBB has a 5 in. long leg and a 3 1/2 in. short leg, 5/16 in. thick, in contact back to back.

It is a double angle set with its long legs back-to-back.

It weighs 17.4 lb per foot.

For strong-axis bending its section modulus is Sx = 3.84 in³ and its moment of inertia Ix = 13.2 in⁴, with a plastic modulus Zx = 6.9 in³.

Detailing dimensions

Long leg5"
Short leg3 1/2"
Thickness (t)5/16"

Section properties

Weight17.4 lb/ft
Area (A)5.12 in²
Ix13.2 in⁴
Sx3.84 in³
Zx6.9 in³
rx1.6 in
Iy12.8 in⁴
Sy3.3 in³
Zy6.16 in³
ry1.58 in

Similar weight double angles

Comparable 17.4 lb/ft sections in other double angle sizes.

2L5×3-1/2×5/16LLBB17.4 lb/ft · Sx 3.84 in³2L5×3-1/2×5/16×3/8LLBB17.4 lb/ft · Sx 3.84 in³2L5×3-1/2×5/16SLBB17.4 lb/ft · Sx 2.01 in³2L5×3-1/2×5/16×3/8SLBB17.4 lb/ft · Sx 2.01 in³2L5×3-1/2×5/16×3/4SLBB17.4 lb/ft · Sx 2.01 in³2L3-1/2×3-1/2×3/817 lb/ft · Sx 2.3 in³2L3-1/2×3-1/2×3/8×3/817 lb/ft · Sx 2.3 in³2L3-1/2×3-1/2×3/8×3/417 lb/ft · Sx 2.3 in³

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 2L5×3-1/2×5/16×3/4LLBB cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Double angles · Steel Beam Size Chart

Interactive drawing