C3×6 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.

C3×6 measures 3 in. deep with a 1 5/8 in. flange and a 3/8 in. web.

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

For strong-axis bending its section modulus is Sx = 1.38 in³ and its moment of inertia Ix = 2.07 in⁴, with a plastic modulus Zx = 1.74 in³.

Detailing dimensions

Depth (d)3"
Flange width (bf)1 5/8"
Web thickness (tw)3/8"
Avg flange thickness (tf)1/4"
k (detailing)11/16"

Section properties

Weight6 lb/ft
Area (A)1.76 in²
Ix2.07 in⁴
Sx1.38 in³
Zx1.74 in³
rx1.09 in
Iy0.3 in⁴
Sy0.263 in³
Zy0.543 in³
ry0.413 in
J0.0725 in⁴

Other C3 sizes

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

C3×3.5C3×4.1C3×5

Similar weight channels

Comparable 6 lb/ft sections in other channel sizes.

C4×6.256.25 lb/ft · Sx 2.1 in³C4×5.45.4 lb/ft · Sx 1.92 in³C5×6.76.7 lb/ft · Sx 2.99 in³C4×7.257.25 lb/ft · Sx 2.29 in³C4×4.54.5 lb/ft · Sx 1.77 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 C3×6 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Channels · Steel Beam Size Chart

Interactive drawing