StructureCalcsHP18X181
Bearing Pile · AISC Shapes Database v15.0 · United States
HP18X181 is a bearing pile 457.2 mm deep with a 457.2 mm wide flange, weighing 269.4 kg/m. The dimensions below are the published AISC Shapes Database v15.0 values; the drawing is generated from them.
HP bearing piles keep flange and web at the same thickness for driving; the near-square profile takes soil abrasion and hard driving on both faces.
Analyse this section, or combine it with plates and other shapes.
Open HP18X181 in the Section CalculatorFree, no sign-up, runs in your browser.
Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 457.2 mm | 18.00 in |
| Flange width, bf | 457.2 mm | 18.00 in |
| Flange thickness, tf | 25.4 mm | 1.000 in |
| Web thickness, tw | 25.4 mm | 1.000 in |
| Mass per metre | 269.4 kg/m | 181.0 lb/ft |
| Area, A | 34,323 mm² | 53.20 in² |
| Second moment, Ix | 1,257,018,907 mm⁴ | 3,020.0 in⁴ |
| Second moment, Iy | 405,409,409 mm⁴ | 974.0 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 HP18X181 the computed area agrees with the published value to better than 0.01% and Ix to 0.10%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 5,493,416 mm³ |
| Elastic modulus, Sy | 1,773,610 mm³ |
| Plastic modulus, Zx | 6,215,022 mm³ |
| Plastic modulus, Zy | 2,735,241 mm³ |
| Radius of gyration, rx | 191.3 mm |
| Radius of gyration, ry | 108.7 mm |
S is the elastic modulus and Z the plastic modulus, following AISC 360. Australian and British practice reverse the letters.
Neighbouring sizes
Where these numbers come from
Published AISC Shapes Database v15.0 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API