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The 150 UC 30 H-beam is Melbourne's most commonly engineer-specified retaining wall post for reactive clay conditions — delivering superior bi-directional lateral strength for walls on Class H and E soils, driveway surcharge applications, and walls between 1.2m and 1.8m in finished height. Retaining Walls Direct supplies 150 UC H-beam posts to Melbourne structural engineers, builders, and landscapers, delivered direct to site across metropolitan Melbourne and regional Victoria.
Compliant with AS/NZS 3678 and AS 4100, hot-dip galvanised to G300 specification. The symmetrical I-profile of the H-beam provides equal strength in both directions — critical for Melbourne's reactive clay soils where lateral soil pressure varies seasonally with moisture content changes.
Melbourne's outer eastern suburbs (Knox, Maroondah, Yarra Ranges), western growth corridors (Wyndham, Melton), and northern suburbs (Hume, Whittlesea) sit on Class H2 and E reactive clays — among the most expansive soils in Australia. The 150 UC 30 provides the lateral stiffness required to resist the cyclic loading these soils impose on retaining wall posts over decades. For walls over 1.0m on these soils, most Melbourne structural engineers will specify 150 UC as a minimum.
The H-beam profile is essential for corner and return wall configurations — pair with our 45 degree and 90 degree corner joiner posts Melbourne for clean, structurally sound wall returns. Standard post spacing 1.8–2.0m, embedment minimum one-third of wall height below ground.
Pair with 50MPa concrete sleepers Melbourne. Always install ag pipe drainage and geotextile fabric. VBA building permit and engineer's certificate required for walls over 1.0m in Victoria. See our VIC Engineering & Council Rules guide.
Flat-bed truck delivery to all Melbourne metro suburbs and regional VIC. Request a free Melbourne delivery quote for your project quantities and postcode.