{"title":"90 Degree Corner Steel Post 150 Series Melbourne VIC","description":"\u003ch2\u003e90 Degree Corner Steel Posts — 150 Heavy Duty Series — Melbourne \u0026amp; Victoria\u003c\/h2\u003e\u003cp\u003eA right-angle corner on a tall retaining wall is one of the most structurally demanding points in the entire structure — and on Melbourne's notoriously reactive clay soils, getting this detail wrong can mean wall failure within a few wet seasons. The 150 Series 90-degree corner post is engineered specifically for this challenge: a heavy duty corner component that accepts concrete sleepers on both perpendicular faces while providing the bi-directional bending resistance that walls over 1.5m on Melbourne's difficult ground conditions require. Specified by structural engineers across Victoria for walls where the 100 Series simply isn't enough.\u003c\/p\u003e\u003ch3\u003eThe Engineering Case for 150 Series at Corners\u003c\/h3\u003e\u003cp\u003eStandard retaining wall design treats corner posts differently from line posts — they receive active soil pressure from two perpendicular directions simultaneously, creating a combined loading scenario that can be 40–60% greater than a standard line post at the same wall height. On Melbourne's reactive Coode Island Silt (inner west), Silurian mudstone clay (inner east), and basalt plains clay (northern suburbs), this combined loading is amplified further by soil swelling during Melbourne's wet winters. The 150 Series corner post provides the structural reserve to handle this safely, with a section modulus that gives engineers the numbers they need to certify the design.\u003c\/p\u003e\u003ch3\u003eFeatures \u0026amp; Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHot-dip galvanised to \u003ca href=\"https:\/\/www.standards.org.au\/standards-catalogue\/sa-snz\/building\/bd-001\/as--nzs-4680\" target=\"_blank\" rel=\"noopener\"\u003eAS\/NZS 4680\u003c\/a\u003e — engineered for Victoria's wet winters and reactive soil conditions\u003c\/li\u003e\n\u003cli\u003e150mm flange width — superior bi-directional bending resistance at right-angle wall corners\u003c\/li\u003e\n\u003cli\u003eAccepts 75mm, 100mm, and 120mm concrete sleepers on both perpendicular faces\u003c\/li\u003e\n\u003cli\u003eTrue 90-degree geometry — precision-fabricated for accurate wall alignment without site adjustment\u003c\/li\u003e\n\u003cli\u003eIntegrates seamlessly with the full 150 Heavy Duty Series post system\u003c\/li\u003e\n\u003cli\u003eSuitable for walls from 1.5m to 2.0m at right-angle corners (engineer certification mandatory above 1.0m in VIC)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhere This Post Is Specified Across Melbourne\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBoundary walls over 1.5m turning at right angles on inner Melbourne terrace lots in Fitzroy North, Northcote, and Preston\u003c\/li\u003e\n\u003cli\u003eEngineered retaining structures on reactive clay sites in Sunshine, Deer Park, and Tarneit where wall height and soil conditions combine to exceed 100 Series capacity\u003c\/li\u003e\n\u003cli\u003ePool barrier retaining walls in Bayside and Port Phillip where the pool surround meets a boundary wall at a right angle and pool safety compliance demands structural certainty\u003c\/li\u003e\n\u003cli\u003eCommercial landscaping and civil retaining projects across Melbourne's outer growth corridors where engineer specifications mandate 150 Series throughout\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eVIC Building Permit \u0026amp; Engineering Requirements\u003c\/h3\u003e\u003cp\u003eVictoria's building permit framework under the \u003ca href=\"https:\/\/www.vba.vic.gov.au\/building\/permits\" target=\"_blank\" rel=\"noopener\"\u003eVictorian Building Authority\u003c\/a\u003e requires a permit and structural engineer's certification for all retaining walls over 1.0m. For 150 Series corner applications, a full engineered design is standard practice. Design must comply with \u003ca href=\"https:\/\/www.standards.org.au\/standards-catalogue\/sa-snz\/building\/bd-001\/as--4678--2002\" target=\"_blank\" rel=\"noopener\"\u003eAS 4678-2002 — Earth Retaining Structures\u003c\/a\u003e. Check \u003ca href=\"https:\/\/www.planning.vic.gov.au\/permits-and-applications\/do-i-need-a-planning-permit\" target=\"_blank\" rel=\"noopener\"\u003eVictorian Planning\u003c\/a\u003e for any Heritage or Neighbourhood Character Overlay requirements in your suburb.\u003c\/p\u003e\u003ch3\u003eDelivery Across Melbourne \u0026amp; Victoria\u003c\/h3\u003e\u003cp\u003eWe deliver 150 Series 90-degree corner posts direct to your site across Melbourne metro, the inner suburbs, Geelong, Mornington Peninsula, Yarra Valley, and regional VIC. Bulk and trade pricing available — \u003ca href=\"\/pages\/partner-with-us-trade-accounts-for-landscapers-builders\"\u003eopen a trade account\u003c\/a\u003e for priority pricing and faster dispatch.\u003c\/p\u003e\u003ch3\u003eRelated Products\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/150-heavy-duty-series-melbourne\"\u003e150 Heavy Duty Series — Melbourne VIC\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/45-degree-corner-150-melbourne\"\u003e45 Degree Corner 150 Series — Melbourne VIC\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/90-degree-corner-steel-post-melbourne\"\u003e90 Degree Corner 100 Series — Melbourne VIC\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/h-beam-steel-posts-melbourne\"\u003eH-Beam Steel Posts — Melbourne VIC\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/50mpa-concrete-sleepers-melbourne\"\u003e50MPa Concrete Sleepers — Melbourne VIC\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eGuides \u0026amp; Resources\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/h-beam-vs-c-channel-steel-posts-which-do-you-need\"\u003eH-Beam vs C-Channel Steel Posts — Which Do You Need?\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/pages\/engineering-council-rules-retaining-walls-australia\"\u003eEngineering \u0026amp; Council Rules for Retaining Walls in Australia\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/news\/how-to-install-drainage-behind-a-retaining-wall-the-right-way\"\u003eHow to Install Drainage Behind a Retaining Wall — The Right Way\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","products":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0952\/5595\/3688\/collections\/90-degree-corner-steel-post-150-series-melbourne-vic.png?v=1779254716","url":"https:\/\/www.retainingwallsdirect.com.au\/collections\/90-degree-corner-150-melbourne.oembed","provider":"Retaining Walls Direct","version":"1.0","type":"link"}