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Quality concrete sleepers & steel posts delivered Australia-wide
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The 150 Series heavy duty galvanised steel posts are the trade-specified choice for Melbourne retaining walls on reactive clay soils, walls approaching 1.2–1.8m, and any application where standard 100 Series posts are insufficient for the site conditions. Retaining Walls Direct supplies 150 UC H-beam and 150 PFC C-channel posts to Melbourne builders, engineers, and landscapers, delivered direct to site across metropolitan Melbourne and regional Victoria.
All 150 Series posts comply with AS/NZS 3678 and AS 4100, hot-dip galvanised to G300 specification for long-term performance in Melbourne's wet winters and reactive clay environments. The 150 UC 30 H-beam is the most commonly engineer-specified post for Melbourne's outer suburban reactive clay conditions.
Specify 150 Series posts for Melbourne projects involving: reactive Class H1, H2, or E clay soils (Knox, Maroondah, Yarra Ranges, Wyndham, Melton, Hume, Whittlesea), walls between 1.0m and 1.8m in finished height, driveway or vehicle surcharge loads above the wall, boundary walls near structures or footings, or where your structural engineer has specified 150 UC or 150 PFC sections. A VBA building permit and engineer's certificate are mandatory for walls over 1.0m in Victoria.
The 150 UC 30 H-beam provides equal lateral strength in both directions — ideal for corner applications, walls with surcharge loads, and reactive clay sites. The 150 PFC C-channel suits straight wall runs on moderately reactive soils where the open profile aids sleeper installation. Use our Steel Post Sizing Guide or consult your engineer for site-specific selection.
Pair with 50MPa concrete sleepers Melbourne for reactive clay applications. Always install ag pipe drainage and geotextile fabric — critical in Melbourne's clay soils. 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.