StructureCalcsHD 400 x 900
Wide-Flange Column (HD) · EN 10365 · Europe
HD 400 x 900 is a heavy wide-flange column section 531.0 mm deep with a 442.0 mm wide flange, weighing 900.0 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 | 531.0 mm | 20.91 in |
| Flange width, bf | 442.0 mm | 17.40 in |
| Flange thickness, tf | 106.0 mm | 4.173 in |
| Web thickness, tw | 65.9 mm | 2.594 in |
| Mass per metre | 900.0 kg/m | 604.8 lb/ft |
| Area, A | 114,919 mm² | 178.12 in² |
| Second moment, Ix | 4,502,040,000 mm⁴ | 10,816.2 in⁴ |
| Second moment, Iy | 1,533,600,000 mm⁴ | 3,684.5 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 900 the computed area agrees with the published value to 0.13% and Ix to 0.08%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Wel,x | 16,970,193 mm³ |
| Elastic modulus, Wel,y | 6,939,483 mm³ |
| Plastic modulus, Wpl,x | 21,641,845 mm³ |
| Plastic modulus, Wpl,y | 10,713,479 mm³ |
| Radius of gyration, rx | 197.9 mm |
| Radius of gyration, ry | 115.4 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