C12×25 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.
C12×25 measures 12 in. deep with a 3 in. flange and a 3/8 in. web.
At 25 lb per foot it is one of the 3 C12 sizes, which run from 20.7 to 30 lb/ft.
For strong-axis bending its section modulus is Sx = 24 in³ and its moment of inertia Ix = 144 in⁴, with a plastic modulus Zx = 29.4 in³.
Detailing dimensions
| Depth (d) | 12" |
|---|---|
| Flange width (bf) | 3" |
| Web thickness (tw) | 3/8" |
| Avg flange thickness (tf) | 1/2" |
| k (detailing) | 1 1/8" |
Section properties
| Weight | 25 lb/ft |
|---|---|
| Area (A) | 7.34 in² |
| Ix | 144 in⁴ |
| Sx | 24 in³ |
| Zx | 29.4 in³ |
| rx | 4.43 in |
| Iy | 4.45 in⁴ |
| Sy | 1.87 in³ |
| Zy | 3.82 in³ |
| ry | 0.779 in |
| J | 0.538 in⁴ |
Other C12 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
Similar weight channels
Comparable 25 lb/ft sections in other channel sizes.
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 C12×25 cut, formed, or fabricated? Huntington Steel & Supply Co.
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