2L5×3-1/2×3/8×3/4LLBB 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.

2L5×3-1/2×3/8×3/4LLBB has a 5 in. long leg and a 3 1/2 in. short leg, 3/8 in. thick, in contact back to back.

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

It weighs 20.8 lb per foot.

For strong-axis bending its section modulus is Sx = 4.56 in³ and its moment of inertia Ix = 15.5 in⁴, with a plastic modulus Zx = 8.18 in³.

Detailing dimensions

Long leg5"
Short leg3 1/2"
Thickness (t)3/8"

Section properties

Weight20.8 lb/ft
Area (A)6.1 in²
Ix15.5 in⁴
Sx4.56 in³
Zx8.18 in³
rx1.59 in
Iy15.4 in⁴
Sy3.97 in³
Zy7.5 in³
ry1.59 in

Similar weight double angles

Comparable 20.8 lb/ft sections in other double angle sizes.

2L5×3-1/2×3/8LLBB20.8 lb/ft · Sx 4.56 in³2L5×3-1/2×3/8×3/8LLBB20.8 lb/ft · Sx 4.56 in³2L5×3-1/2×3/8SLBB20.8 lb/ft · Sx 2.38 in³2L5×3-1/2×3/8×3/8SLBB20.8 lb/ft · Sx 2.38 in³2L5×3-1/2×3/8×3/4SLBB20.8 lb/ft · Sx 2.38 in³2L5×5×5/1620.6 lb/ft · Sx 4.08 in³2L5×5×5/16×3/820.6 lb/ft · Sx 4.08 in³2L5×5×5/16×3/420.6 lb/ft · Sx 4.08 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 2L5×3-1/2×3/8×3/4LLBB cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Double angles · Steel Beam Size Chart

Interactive drawing