StructureCalcsHD 400 x 818
Wide-Flange Column (HD) · EN 10365 · Europe
HD 400 x 818 is a heavy wide-flange column section 514.0 mm deep with a 437.0 mm wide flange, weighing 819.0 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.
Analyse this section, or combine it with plates and other shapes.
Open HD 400 x 818 in the Section CalculatorFree, no sign-up, runs in your browser.
Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 514.0 mm | 20.24 in |
| Flange width, bf | 437.0 mm | 17.20 in |
| Flange thickness, tf | 97.0 mm | 3.819 in |
| Web thickness, tw | 60.5 mm | 2.382 in |
| Mass per metre | 819.0 kg/m | 550.3 lb/ft |
| Area, A | 104,331 mm² | 161.71 in² |
| Second moment, Ix | 3,921,910,000 mm⁴ | 9,422.4 in⁴ |
| Second moment, Iy | 1,355,400,000 mm⁴ | 3,256.4 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 818 the computed area agrees with the published value to 0.14% and Ix to 0.09%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Wel,x | 15,274,240 mm³ |
| Elastic modulus, Wel,y | 6,203,607 mm³ |
| Plastic modulus, Wpl,x | 19,278,417 mm³ |
| Plastic modulus, Wpl,y | 9,566,737 mm³ |
| Radius of gyration, rx | 193.8 mm |
| Radius of gyration, ry | 113.9 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