StructureCalcsHD 400 x 287
Wide-Flange Column (HD) · EN 10365 · Europe
HD 400 x 287 is a heavy wide-flange column section 393.0 mm deep with a 399.0 mm wide flange, weighing 287.5 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 | 393.0 mm | 15.47 in |
| Flange width, bf | 399.0 mm | 15.71 in |
| Flange thickness, tf | 36.6 mm | 1.441 in |
| Web thickness, tw | 22.6 mm | 0.890 in |
| Mass per metre | 287.5 kg/m | 193.2 lb/ft |
| Area, A | 36,628 mm² | 56.77 in² |
| Second moment, Ix | 1,000,600,000 mm⁴ | 2,404.0 in⁴ |
| Second moment, Iy | 387,800,000 mm⁴ | 931.7 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 400 x 287 the computed area agrees with the published value to better than 0.01% and Ix to 0.35%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Wel,x | 5,074,105 mm³ |
| Elastic modulus, Wel,y | 1,944,010 mm³ |
| Plastic modulus, Wpl,x | 5,812,725 mm³ |
| Plastic modulus, Wpl,y | 2,957,043 mm³ |
| Radius of gyration, rx | 165.0 mm |
| Radius of gyration, ry | 102.9 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