StructureCalcsHD 320 x 127
Wide-Flange Column (HD) · EN 10365 · Europe
HD 320 x 127 is a heavy wide-flange column section 320.0 mm deep with a 300.0 mm wide flange, weighing 127.0 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 | 320.0 mm | 12.60 in |
| Flange width, bf | 300.0 mm | 11.81 in |
| Flange thickness, tf | 20.5 mm | 0.807 in |
| Web thickness, tw | 11.5 mm | 0.453 in |
| Mass per metre | 127.0 kg/m | 85.3 lb/ft |
| Area, A | 16,135 mm² | 25.01 in² |
| Second moment, Ix | 308,240,000 mm⁴ | 740.5 in⁴ |
| Second moment, Iy | 92,380,000 mm⁴ | 221.9 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 127 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 | 1,926,471 mm³ |
| Elastic modulus, Wel,y | 615,922 mm³ |
| Plastic modulus, Wpl,x | 2,149,240 mm³ |
| Plastic modulus, Wpl,y | 939,097 mm³ |
| Radius of gyration, rx | 138.2 mm |
| Radius of gyration, ry | 75.7 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