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The 150 PFC C-channel post is the heavy duty open-profile steel post for Melbourne retaining walls on moderately reactive soils and walls approaching 1.2–1.5m — providing greater lateral strength than 100 Series while retaining the practical side-loading installation advantage of the C-channel profile. Retaining Walls Direct supplies 150 PFC C-channel posts to Melbourne builders, landscapers, and fencing contractors, delivered direct to site.
Compliant with AS/NZS 3678 and AS 4100, hot-dip galvanised to G300 specification. The open C-profile allows concrete sleepers to be slid in from the side during installation — a significant practical advantage on tight Melbourne residential sites where crane access is limited.
The 150 PFC suits Melbourne walls on Class M to H1 reactive soils at heights between 1.0m and 1.5m — common in Melbourne's middle-ring eastern suburbs (Doncaster, Box Hill, Nunawading) and bayside areas. For Class H2 or E reactive clays in Melbourne's outer suburbs, or walls over 1.5m, upgrade to the 150 UC H-beam for superior bi-directional strength. Always confirm post selection with a structural engineer for walls over 1.0m — VBA permit required.
Space at 1.8–2.0m centres. Embed minimum one-third of total wall height below ground, minimum 600mm. For reactive clay soils, concrete encasement of post bases is recommended — confirm with your engineer. See our Steel Post Sizing Guide for full Melbourne guidance.
Pair with 50MPa concrete sleepers Melbourne and install ag pipe drainage and geotextile fabric behind every wall. Get a free Melbourne delivery quote today.