StructureCalcsC3X4.1
American Standard Channel · AISC Shapes Database v15.0 · United States
C3X4.1 is an American Standard channel 76.2 mm deep with a 35.8 mm wide flange, weighing 6.1 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 | 76.2 mm | 3.00 in |
| Flange width, bf | 35.8 mm | 1.41 in |
| Flange thickness, tf | 6.9 mm | 0.273 in |
| Web thickness, tw | 4.3 mm | 0.170 in |
| Mass per metre | 6.1 kg/m | 4.1 lb/ft |
| Area, A | 774 mm² | 1.20 in² |
| Second moment, Ix | 686,782 mm⁴ | 1.7 in⁴ |
| Second moment, Iy | 79,500 mm⁴ | 0.2 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 C3X4.1 the computed area agrees with the published value to 0.02% and Ix to 0.03%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 18,020 mm³ |
| Elastic modulus, Sy | 3,356 mm³ |
| Plastic modulus, Zx | 21,548 mm³ |
| Plastic modulus, Zy | 6,578 mm³ |
| Radius of gyration, rx | 29.8 mm |
| Radius of gyration, ry | 10.3 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