C3×5 channel

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.

C3×5 measures 3 in. deep with a 1 1/2 in. flange and a 1/4 in. web.

At 5 lb per foot it is one of the 4 C3 sizes, which run from 3.5 to 6 lb/ft.

For strong-axis bending its section modulus is Sx = 1.23 in³ and its moment of inertia Ix = 1.85 in⁴, with a plastic modulus Zx = 1.52 in³.

Detailing dimensions

Depth (d)3"
Flange width (bf)1 1/2"
Web thickness (tw)1/4"
Avg flange thickness (tf)1/4"
k (detailing)11/16"

Section properties

Weight5 lb/ft
Area (A)1.47 in²
Ix1.85 in⁴
Sx1.23 in³
Zx1.52 in³
rx1.12 in
Iy0.241 in⁴
Sy0.228 in³
Zy0.464 in³
ry0.405 in
J0.0425 in⁴

Other C3 sizes

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

C3×3.5C3×4.1C3×6

Similar weight channels

Comparable 5 lb/ft sections in other channel sizes.

C4×5.45.4 lb/ft · Sx 1.92 in³C4×4.54.5 lb/ft · Sx 1.77 in³C4×6.256.25 lb/ft · Sx 2.1 in³C5×6.76.7 lb/ft · Sx 2.99 in³C4×7.257.25 lb/ft · Sx 2.29 in³C6×8.28.2 lb/ft · Sx 4.35 in³C5×99 lb/ft · Sx 3.56 in³C7×9.89.8 lb/ft · Sx 6.07 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 C3×5 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Channels · Steel Beam Size Chart

Interactive drawing