Universal Bearing Piles UBP
AS/NZS 3679.1Hot-rolled H-sections with equal flange and web thickness, used for driven piles and heavy columns. Dimensions, section properties, AS 4100 capacities and free DXF drawings for all 3 sizes.
Universal bearing piles (UBP) are hot-rolled H-sections with flange and web of nearly equal thickness. That makes them robust under driving and suited to end-bearing and friction piles, soldier piles in retaining walls and heavy columns.
Piles are designed to AS 2159 (piling) as well as AS 4100. For piles in soil or water, allow for corrosion by deducting a sacrificial thickness from the exposed faces before calculating the section capacity; the properties here are for the full nominal section.
Select any section in the table to open its page, with a dimensioned drawing, all section properties, AS 4100 capacities and a free DXF download for your CAD software.
| Designation | Mass kg/m | d mm | bf mm | tf mm | tw mm | Ag mm² | Ix 10⁶mm⁴ | Zx 10³mm³ | Sx 10³mm³ | Iy 10⁶mm⁴ | ry mm | J 10³mm⁴ | φMsx kNm | φNs kN |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 310UBP149 | 149.0 | 318 | 316 | 20.6 | 20.5 | 18927 | 329 | 2068 | 2360 | 109 | 75.7 | 2946 | 594.7 | 4770 |
| 310UBP110 | 110.0 | 308 | 311 | 15.4 | 15.3 | 14054 | 237 | 1537 | 1727 | 77.3 | 74.2 | 1245 | 455.1 | 3795 |
| 310UBP78.8 | 78.8 | 299 | 306 | 11.1 | 11.1 | 10099 | 165 | 1102 | 1222 | 53.1 | 72.5 | 484 | 304.2 | 2727 |
Frequently asked questions
- UBP or UC for a pile?
- UBPs have a web almost as thick as the flanges, which suits hard driving. A UC of similar mass has a thinner web and is usually the better column.
Relevant Australian Standards
- AS/NZS 3679.1:2016 Structural steel – Part 1: Hot-rolled bars and sections
Specifies chemical composition, mechanical properties and tolerances for hot-rolled universal beams and columns, channels, angles, flats and bars in Grades 300 and 350. - AS 4100:2020 Steel structures
The Australian design Standard for steel members and connections. Covers section classification (Section 5), member moment capacity including lateral-torsional buckling (5.6), shear (5.11), axial compression (Section 6), tension (Section 7) and combined actions (Section 8). - AS/NZS 5131:2016 Structural steelwork – Fabrication and erection
Fabrication, erection, tolerances, inspection and construction categories (CC1–CC4) for structural steelwork.