2L3×3×5/16×3/4 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.

2L3×3×5/16×3/4 has equal 3 in. legs, 5/16 in. thick, spaced 3/4 in. back to back.

At 12.2 lb per foot it is one of the 18 2L3×3 sizes, which run from 7.42 to 18.8 lb/ft.

For strong-axis bending its section modulus is Sx = 1.4 in³ and its moment of inertia Ix = 3 in⁴, with a plastic modulus Zx = 2.52 in³.

Detailing dimensions

Long leg3"
Short leg3"
Thickness (t)5/16"

Section properties

Weight12.2 lb/ft
Area (A)3.56 in²
Ix3 in⁴
Sx1.4 in³
Zx2.52 in³
rx0.918 in
Iy8.44 in⁴
Sy2.5 in³
Zy4.4 in³
ry1.54 in

Other 2L3×3 sizes

Same nominal size, different weight — useful when you are checking a substitution or a lighter section.

2L3×3×3/162L3×3×3/16×3/82L3×3×3/16×3/42L3×3×1/42L3×3×1/4×3/82L3×3×1/4×3/42L3×3×5/162L3×3×5/16×3/82L3×3×3/82L3×3×3/8×3/82L3×3×3/8×3/42L3×3×7/162L3×3×7/16×3/82L3×3×7/16×3/42L3×3×1/22L3×3×1/2×3/82L3×3×1/2×3/4

All 2L3×3 sizes and dimensions →

Similar weight double angles

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

2L3-1/2×2-1/2×5/16LLBB12.2 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 in³2L3-1/2×2-1/2×5/16×3/4SLBB12.2 lb/ft · Sx 1 in³2L4×3-1/2×1/4LLBB12.4 lb/ft · Sx 2.02 in³2L4×3-1/2×1/4×3/8LLBB12.4 lb/ft · Sx 2.02 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 2L3×3×5/16×3/4 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Double angles · Steel Beam Size Chart

Interactive drawing