StructureCalcsC7X12.25
American Standard Channel · AISC Shapes Database v15.0 · United States
C7X12.25 is an American Standard channel 177.8 mm deep with a 55.6 mm wide flange, weighing 18.2 kg/m. The dimensions below are the published AISC Shapes Database v15.0 values; the drawing is generated from them.
C-shapes are American Standard channels with tapered flanges — stringers, purlins and frames where a single flat back face is wanted.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 177.8 mm | 7.00 in |
| Flange width, bf | 55.6 mm | 2.19 in |
| Flange thickness, tf | 9.3 mm | 0.366 in |
| Web thickness, tw | 8.0 mm | 0.314 in |
| Mass per metre | 18.2 kg/m | 12.3 lb/ft |
| Area, A | 2,323 mm² | 3.60 in² |
| Second moment, Ix | 10,072,801 mm⁴ | 24.2 in⁴ |
| Second moment, Iy | 482,829 mm⁴ | 1.2 in⁴ |
Derived section properties
Integrated from the section's own outline including the root and toe radii, whose arcs are integrated analytically rather than approximated by facets. For C7X12.25 the computed area agrees with the published value to better than 0.01% and Ix to 0.20%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 113,527 mm³ |
| Elastic modulus, Sy | 11,608 mm³ |
| Plastic modulus, Zx | 138,794 mm³ |
| Plastic modulus, Zy | 23,424 mm³ |
| Radius of gyration, rx | 65.9 mm |
| Radius of gyration, ry | 14.5 mm |
S is the elastic modulus and Z the plastic modulus, following AISC 360. Australian and British practice reverse the letters.
Neighbouring sizes
Where these numbers come from
Published AISC Shapes Database v15.0 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API