Name: Retaining Walls Direct
Address: Pillapai Street, Charlestown, NSW, 2290, AU
Telephone: 1800 880 124
Price range: $$

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

How to Calculate How Many Sleepers and Posts You Need

A step-by-step guide to calculating the number of concrete sleepers and steel posts needed for a retaining wall in Australia — with worked examples for standard wall configurations.

May 12, 2026
6 min read

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Galvanised Steel Post Caps

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How to Calculate How Many Sleepers and Posts You Need

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