2L3-1/2×2-1/2×5/16×3/4SLBB 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.

2L3-1/2×2-1/2×5/16×3/4SLBB has a 3 1/2 in. long leg and a 2 1/2 in. short leg, 5/16 in. thick, in contact back to back.

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

It weighs 12.2 lb per foot.

For strong-axis bending its section modulus is Sx = 1 in³ and its moment of inertia Ix = 1.87 in⁴, with a plastic modulus Zx = 1.8 in³.

Detailing dimensions

Long leg3 1/2"
Short leg2 1/2"
Thickness (t)5/16"

Section properties

Weight12.2 lb/ft
Area (A)3.58 in²
Ix1.87 in⁴
Sx1 in³
Zx1.8 in³
rx0.723 in
Iy12.5 in⁴
Sy3.23 in³
Zy5.39 in³
ry1.87 in

Similar weight double angles

Comparable 12.2 lb/ft sections in other double angle sizes.

2L3×3×5/1612.2 lb/ft · Sx 1.4 in³2L3×3×5/16×3/812.2 lb/ft · Sx 1.4 in³2L3×3×5/16×3/412.2 lb/ft · Sx 1.4 in³2L3-1/2×2-1/2×5/16LLBB12.2 lb/ft · Sx 1.85 in³2L3-1/2×2-1/2×5/16×3/8LLBB12.2 lb/ft · Sx 1.85 in³2L3-1/2×2-1/2×5/16×3/4LLBB12.2 lb/ft · Sx 1.85 in³2L3-1/2×2-1/2×5/16SLBB12.2 lb/ft · Sx 1 in³2L3-1/2×2-1/2×5/16×3/8SLBB12.2 lb/ft · Sx 1 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 2L3-1/2×2-1/2×5/16×3/4SLBB cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Double angles · Steel Beam Size Chart

Interactive drawing