StructureCalcsHD 320 x 74.2
Wide-Flange Column (HD) · EN 10365 · Europe
HD 320 x 74.2 is a heavy wide-flange column section 301.0 mm deep with a 300.0 mm wide flange, weighing 74.2 kg/m. The dimensions below are the published EN 10365 values; the drawing is generated from them.
HD sections are heavy wide-flange columns rolled for high-rise and transfer work, extending the HE family upward.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 301.0 mm | 11.85 in |
| Flange width, bf | 300.0 mm | 11.81 in |
| Flange thickness, tf | 11.0 mm | 0.433 in |
| Web thickness, tw | 8.0 mm | 0.315 in |
| Mass per metre | 74.2 kg/m | 49.9 lb/ft |
| Area, A | 9,458 mm² | 14.66 in² |
| Second moment, Ix | 164,470,000 mm⁴ | 395.1 in⁴ |
| Second moment, Iy | 49,590,000 mm⁴ | 119.1 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 HD 320 x 74.2 the computed area agrees with the published value to better than 0.01% and Ix to better than 0.01%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Wel,x | 1,092,848 mm³ |
| Elastic modulus, Wel,y | 330,606 mm³ |
| Plastic modulus, Wpl,x | 1,196,204 mm³ |
| Plastic modulus, Wpl,y | 505,741 mm³ |
| Radius of gyration, rx | 131.9 mm |
| Radius of gyration, ry | 72.4 mm |
Wel is the elastic modulus and Wpl the plastic modulus, following Eurocode 3 notation.
Neighbouring sizes
Where these numbers come from
Published EN 10365 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API