L8×4×3/4 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.

L8×4×3/4 has a 8 in. long leg and a 4 in. short leg, 3/4 in. thick.

At 28.7 lb per foot it is one of the 7 L8×4 sizes, which run from 17.2 to 37.4 lb/ft.

For strong-axis bending its section modulus is Sx = 10.9 in³ and its moment of inertia Ix = 55 in⁴, with a plastic modulus Zx = 18.9 in³.

Detailing dimensions

Long leg8"
Short leg4"
Thickness (t)3/4"
k (detailing)1 1/4"

Section properties

Weight28.7 lb/ft
Area (A)8.49 in²
Ix55 in⁴
Sx10.9 in³
Zx18.9 in³
rx2.55 in
Iy9.37 in⁴
Sy3.07 in³
Zy5.82 in³
ry1.05 in
J1.61 in⁴

Other L8×4 sizes

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

L8×4×7/16L8×4×1/2L8×4×9/16L8×4×5/8L8×4×7/8L8×4×1

All L8×4 sizes and dimensions →

Similar weight angles

Comparable 28.7 lb/ft sections in other angle sizes.

L6×6×3/428.7 lb/ft · Sx 6.64 in³L8×6×5/828.5 lb/ft · Sx 9.86 in³L8×8×9/1629.6 lb/ft · Sx 9.33 in³L6×4×7/827.2 lb/ft · Sx 7.13 in³L5×5×7/827.2 lb/ft · Sx 5.16 in³L8×8×1/226.4 lb/ft · Sx 8.36 in³L7×4×3/426.2 lb/ft · Sx 8.39 in³L8×6×9/1625.7 lb/ft · Sx 8.94 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 L8×4×3/4 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Angles · Steel Beam Size Chart

Interactive drawing