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90 degree corner joiner posts are the standard solution for right-angle retaining wall returns across Melbourne — used wherever a wall turns a square corner at a property boundary, garden bed edge, or driveway cut. Retaining Walls Direct supplies 150 Series 90 degree galvanised corner joiner posts to Melbourne builders, landscapers, and engineers, 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 90 degree corner post is pre-fabricated to accept concrete sleepers on two perpendicular faces — providing a structurally sound, clean-finished right-angle corner without site fabrication or improvised solutions.
90 degree corner posts are used on Melbourne residential blocks wherever retaining walls meet at right angles — common in Melbourne's inner suburbs (Fitzroy, Collingwood, Richmond) where terrace house gardens have square boundary walls, and in Melbourne's outer suburbs where driveway retaining walls turn 90 degrees at the property boundary. Also widely used in tiered garden wall designs across Melbourne's bayside and eastern suburbs.
Corner posts carry higher lateral loads than standard mid-wall posts and must be set in concrete footings with embedment depth confirmed by your structural engineer. Reduce post spacing to 1.5–1.8m on either side of the corner. For walls over 1.0m in Victoria, a VBA building permit and engineer's certificate are mandatory. See our VIC Engineering & Council Rules guide.
Use with 150 Series steel posts Melbourne, 50MPa concrete sleepers Melbourne, and 45 degree corner posts for angled returns. Always install ag pipe drainage and geotextile fabric. Get a free Melbourne delivery quote today.
