AS 4678 Certified | Trade Accounts Welcome | 40+ Years Experience

AS 4678 Certified | Trade Accounts Welcome | 40+ Years Experience

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Dy-Mark Spot Marking Paint 350g
Geo matting geotextile fabric roll for retaining wall drainage
Geo Matting | Geotextile Fabric for Retaining Wall Drainage
Ag pipe 100mm x 20m slotted drain coil for retaining wall drainage
Ag Pipe 100mm x 20m | Slotted & Socked Drain Coil
Galvanised steel post caps for H-beam and C-channel retaining wall posts
Galvanised Steel Post Caps
Galvanised steel fence bracket kit with hex bolts and nuts for retaining wall posts
Galvanised Steel Fence Bracket Kit
Builders line nylon pink 100m stringline reel
Builders Line Nylon Pink 100m

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Retaining Wall Advice

Steel post being embedded into a concrete footing showing installation depth

Steel Post Spacing & Embedment Depth for Retaining Walls

Correct steel post spacing and embedment depth for retaining walls: standard centres, the one-third embedment rule, and how soil type and surcharge change the numbers.

  • July 30, 2026
  • 11 min read

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