2L5×3-1/2×1/4×3/4LLBB 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.

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

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

It weighs 14 lb per foot.

For strong-axis bending its section modulus is Sx = 3.1 in³ and its moment of inertia Ix = 10.7 in⁴, with a plastic modulus Zx = 5.56 in³.

Detailing dimensions

Long leg5"
Short leg3 1/2"
Thickness (t)1/4"

Section properties

Weight14 lb/ft
Area (A)4.14 in²
Ix10.7 in⁴
Sx3.1 in³
Zx5.56 in³
rx1.61 in
Iy10.2 in⁴
Sy2.63 in³
Zy4.88 in³
ry1.57 in

Similar weight double angles

Comparable 14 lb/ft sections in other double angle sizes.

2L5×3-1/2×1/4LLBB14 lb/ft · Sx 3.1 in³2L5×3-1/2×1/4×3/8LLBB14 lb/ft · Sx 3.1 in³2L5×3-1/2×1/4SLBB14 lb/ft · Sx 1.63 in³2L5×3-1/2×1/4×3/8SLBB14 lb/ft · Sx 1.63 in³2L5×3-1/2×1/4×3/4SLBB14 lb/ft · Sx 1.63 in³2L3-1/2×3-1/2×5/1614.4 lb/ft · Sx 1.94 in³2L3-1/2×3-1/2×5/16×3/814.4 lb/ft · Sx 1.94 in³2L3-1/2×3-1/2×5/16×3/414.4 lb/ft · Sx 1.94 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 2L5×3-1/2×1/4×3/4LLBB cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Double angles · Steel Beam Size Chart

Interactive drawing