StructureCalcs75 PFC
Parallel Flange Channel · AS/NZS 3679.1 · Australia / New Zealand
75 PFC is a parallel flange channel 75.0 mm deep with a 40.0 mm wide flange, weighing 5.9 kg/m. The dimensions below are the published AS/NZS 3679.1 values; the drawing is generated from them.
Parallel Flange Channels are the Australian standard channel — purlins, stringers and edge members, with parallel flanges that make bolted connections straightforward.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 75.0 mm | 2.95 in |
| Flange width, bf | 40.0 mm | 1.57 in |
| Flange thickness, tf | 6.1 mm | 0.240 in |
| Web thickness, tw | 3.8 mm | 0.150 in |
| Mass per metre | 5.9 kg/m | 4.0 lb/ft |
| Area, A | 754 mm² | 1.17 in² |
| Second moment, Ix | 689,555 mm⁴ | 1.7 in⁴ |
| Second moment, Iy | 120,000 mm⁴ | 0.3 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 75 PFC the computed area agrees with the published value to better than 0.01% and Ix to 0.91%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Zx | 18,220 mm³ |
| Elastic modulus, Zy | 4,564 mm³ |
| Plastic modulus, Sx | 21,372 mm³ |
| Plastic modulus, Sy | 8,145 mm³ |
| Radius of gyration, rx | 30.1 mm |
| Radius of gyration, ry | 12.6 mm |
Z is the elastic modulus and S the plastic modulus, following AS 4100. Under AISC 360 the letters are reversed.
Neighbouring sizes
Where these numbers come from
Published AS/NZS 3679.1 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API