Structural Shapes
Channel - Structural
Standard Channel (American Standard)
C-Shapes ASTMA-36
| Designation Depth in inches x weight/per ft. lbs |
Weight Per Ft. (lbs.) |
Depth Section (inches) |
in inches | Flange Thickness (average, inches) |
Web Thickness (inches) |
Area of Section (inches) |
Section Modulus Sx (inches) |
**Surface Area (foot of length) |
|---|---|---|---|---|---|---|---|---|
| C3 x (3x1-1/2) |
4.1 | *3 | 1-3/8 | 1/4 | 3/16 | 1.21 | 1.10 | .89 |
| 5.0 | 3 | 1-1/2 | 1/4 | 1/4 | 1.47 | 1.24 | .91 | |
| 6.0 | 3 | 1-5/8 | 1/4 | 3/8 | 1.76 | 1.38 | .97 | |
| C4 x (4x1-5/8) |
5.4 | 4 | 1-5/8 | 5/16 | 3/16 | 1.59 | 1.93 | 1.11 |
| 6.25 | 4 | 1-5/8 | 5/16 | 1/4 | 1.82 | 2.10 | 1.12 | |
| 7.25 | 4 | 1-3/4 | 5/16 | 5/16 | 2.13 | 2.29 | 1.13 | |
| C5 x (5x1-3/4) |
6.7 | 5 | 1-3/4 | 5/16 | 3/16 | 1.97 | 3.00 | 1.33 |
| 9.0 | 5 | 1-7/8 | 5/16 | 5/16 | 2.64 | 3.56 | 1.35 | |
| C6 x (6x2) |
8.2 | 6 | 1-7/8 | 5/16 | 3/16 | 2.40 | 4.38 | 1.54 |
| 10.5 | 6 | 1-7/8 | 5/16 | 5/16 | 3.09 | 5.06 | 1.56 | |
| 13.0 | 6 | 2-1/8 | 5/16 | 7/16 | 3.83 | 5.80 | 1.58 | |
| C7 x (7x2-1/8) |
9.8 | 7 | 2-1/8 | 3/8 | 3/16 | 2.87 | 6.08 | 1.76 |
| 12.25 | 7 | 2-1/4 | 3/8 | 5/16 | 3.60 | 6.93 | 1.78 | |
| 14.75 | 7 | 2-1/4 | 3/8 | 7/16 | 4.33 | 7-7/8 | 1.83 | |
| C8 x (8x2-1/4) |
11.5 | 8 | 2-1/4 | 3/8 | 1/4 | 3.38 | 8.14 | 1.98 |
| 13.75 | 8 | 2-3/8 | 3/8 | 5/16 | 4.04 | 9.03 | 1.99 | |
| 18.75 | 8 | 2-1/2 | 3/8 | 1/2 | 5.51 | 11.00 | 2.02 | |
| C9 x (9x2-1/2 |
13.4 | *9 | 2-3/8 | 7/16 | 1/4 | 3.94 | 10.6 | 2.19 |
| 15.0 | 9 | 2-1/2 | 7/16 | 5/16 | 4.41 | 11.3 | 2.20 | |
| 20.0 | 9 | 2-5/8 | 7/16 | 7/16 | 5.88 | 13.5 | 2.31 | |
| C10 x (10x2-5/8) |
15.3 | 10 | 2-5/8 | 7/16 | 1/4 | 4.49 | 13.5 | 2.41 |
| 20.0 | 10 | 2-3/4 | 7/16 | 3/8 | 5.88 | 15.8 | 2.43 | |
| 25.0 | 10 | 2-7/8 | 7/16 | 1/2 | 7.35 | 18.2 | 2.46 | |
| 30.0 | 10 | 3 | 7/16 | 11/16 | 8.82 | 20.7 | 2.46 | |
| C12 x (12x3) |
20.7 | 12 | 3 | 1/2 | 5/16 | 6.09 | 21.5 | 2.84 |
| 25.0 | 12 | 3 | 1/2 | 3/8 | 7.35 | 24.1 | 2.86 | |
| 30.0 | 12 | 3-1/8 | 1/2 | 1/2 | 8.82 | 27.0 | 2.88 | |
| C15 x (15x3-3/8) |
33.9 | 15 | 3-3/8 | 5/8 | 3/8 | 9.96 | 42.0 | 3.45 |
| 40.0 | 15 | 3-1/2 | 5/8 | 1/2 | 11.80 | 46.5 | 3.47 | |
| 50.0 | 15 | 3-3/4 | 5/8 | 11/16 | 14.70 | 53.8 | 3.51 |
* APPROXIMATE DIMENSIONS FOR DETAILING ONLY
The rounding off of decimal dimensions to fractions can lead to an accumulation of differences. (See A.I.S.C. Manual)
** For painting and sandblasting surface area (all around) square foot of length.
Formed Channel
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