C12×30 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.

C12×30 measures 12 in. deep with a 3 1/8 in. flange and a 1/2 in. web.

At 30 lb per foot it is the heaviest of the 3 C12 sizes, which run from 20.7 to 30 lb/ft.

For strong-axis bending its section modulus is Sx = 27 in³ and its moment of inertia Ix = 162 in⁴, with a plastic modulus Zx = 33.8 in³.

Detailing dimensions

Depth (d)12"
Flange width (bf)3 1/8"
Web thickness (tw)1/2"
Avg flange thickness (tf)1/2"
k (detailing)1 1/8"

Section properties

Weight30 lb/ft
Area (A)8.81 in²
Ix162 in⁴
Sx27 in³
Zx33.8 in³
rx4.29 in
Iy5.12 in⁴
Sy2.05 in³
Zy4.32 in³
ry0.762 in
J0.861 in⁴

Other C12 sizes

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

C12×20.7C12×25

Similar weight channels

Comparable 30 lb/ft sections in other channel sizes.

C10×3030 lb/ft · Sx 20.7 in³C15×33.933.9 lb/ft · Sx 42 in³C10×2525 lb/ft · Sx 18.2 in³C10×2020 lb/ft · Sx 15.8 in³C9×2020 lb/ft · Sx 13.5 in³C15×4040 lb/ft · Sx 46.5 in³C8×18.7518.75 lb/ft · Sx 11 in³C10×15.315.3 lb/ft · Sx 13.5 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 C12×30 cut, formed, or fabricated? Huntington Steel & Supply Co.

Browse more: Channels · Steel Beam Size Chart

Interactive drawing