StructureCalcsHD 400 x 634
Wide-Flange Column (HD) · EN 10365 · Europe
HD 400 x 634 is a heavy wide-flange column section 474.0 mm deep with a 424.0 mm wide flange, weighing 634.3 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 | 474.0 mm | 18.66 in |
| Flange width, bf | 424.0 mm | 16.69 in |
| Flange thickness, tf | 77.1 mm | 3.035 in |
| Web thickness, tw | 47.6 mm | 1.874 in |
| Mass per metre | 634.3 kg/m | 426.2 lb/ft |
| Area, A | 80,797 mm² | 125.24 in² |
| Second moment, Ix | 2,741,710,000 mm⁴ | 6,587.0 in⁴ |
| Second moment, Iy | 982,600,000 mm⁴ | 2,360.7 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 634 the computed area agrees with the published value to 0.19% and Ix to 0.13%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Wel,x | 11,583,447 mm³ |
| Elastic modulus, Wel,y | 4,635,118 mm³ |
| Plastic modulus, Wpl,x | 14,245,227 mm³ |
| Plastic modulus, Wpl,y | 7,121,218 mm³ |
| Radius of gyration, rx | 184.2 mm |
| Radius of gyration, ry | 110.2 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