StructureCalcsC12X30
American Standard Channel · AISC Shapes Database v15.0 · United States
C12X30 is an American Standard channel 304.8 mm deep with a 80.5 mm wide flange, weighing 44.6 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 | 304.8 mm | 12.00 in |
| Flange width, bf | 80.5 mm | 3.17 in |
| Flange thickness, tf | 12.7 mm | 0.501 in |
| Web thickness, tw | 13.0 mm | 0.510 in |
| Mass per metre | 44.6 kg/m | 30.0 lb/ft |
| Area, A | 5,684 mm² | 8.81 in² |
| Second moment, Ix | 67,429,491 mm⁴ | 162.0 in⁴ |
| Second moment, Iy | 2,131,105 mm⁴ | 5.1 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 C12X30 the computed area agrees with the published value to better than 0.01% and Ix to 0.11%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 441,976 mm³ |
| Elastic modulus, Sy | 34,073 mm³ |
| Plastic modulus, Zx | 553,445 mm³ |
| Plastic modulus, Zy | 71,124 mm³ |
| Radius of gyration, rx | 108.9 mm |
| Radius of gyration, ry | 19.5 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