2L5×3-1/2×3/4×3/4LLBB 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.

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

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

It weighs 39.6 lb per foot.

For strong-axis bending its section modulus is Sx = 8.52 in³ and its moment of inertia Ix = 27.8 in⁴, with a plastic modulus Zx = 15.2 in³.

Detailing dimensions

Long leg5"
Short leg3 1/2"
Thickness (t)3/4"

Section properties

Weight39.6 lb/ft
Area (A)11.7 in²
Ix27.8 in⁴
Sx8.52 in³
Zx15.2 in³
rx1.55 in
Iy33 in⁴
Sy8.52 in³
Zy16 in³
ry1.68 in

Similar weight double angles

Comparable 39.6 lb/ft sections in other double angle sizes.

2L5×3-1/2×3/4LLBB39.6 lb/ft · Sx 8.52 in³2L5×3-1/2×3/4×3/8LLBB39.6 lb/ft · Sx 8.52 in³2L5×3-1/2×3/4SLBB39.6 lb/ft · Sx 4.4 in³2L5×3-1/2×3/4×3/8SLBB39.6 lb/ft · Sx 4.4 in³2L5×3-1/2×3/4×3/4SLBB39.6 lb/ft · Sx 4.4 in³2L6×6×1/239.2 lb/ft · Sx 9.18 in³2L6×6×1/2×3/839.2 lb/ft · Sx 9.18 in³2L6×6×1/2×3/439.2 lb/ft · Sx 9.18 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 2L5×3-1/2×3/4×3/4LLBB cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Double angles · Steel Beam Size Chart

Interactive drawing