Retaining Wall Advice

Concrete sleepers and steel posts work as one system, not two separate purchases. Here's how to match them correctly and why ordering as a kit beats mixing suppliers.

H4, CCA, ACQ — the labels on treated pine sound technical, but only one thing actually matters for a retaining wall: is it rated for in-ground use.

A straight-talking buyer's guide to treated pine sleepers — H4 treatment explained, 200x75 vs 200x100 sizing, and how many you'll need for your project.

Everything you need to plan a timber sleeper retaining wall — treated pine sizing, steel post spacing, drainage and Australian height limits, in one guide.

Choosing the wrong concrete sleeper strength is one of the most common retaining wall mistakes in Australia. This guide explains exactly when to specify 40MPa, 50MPa, or 60MPa sleepers based on wall height, soil type, and site conditions.

A practical comparison of charcoal, woodgrain, and smooth finish concrete sleepers — covering aesthetics, best uses, paintability, and how to choose the right finish for your retaining wall project.

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.

A practical guide to choosing between C-channel PFC and H-beam universal column steel posts for concrete sleeper retaining walls — covering wall height, soil conditions, surcharge loads, post spacing, and engineering triggers.

A practical comparison of concrete and timber sleepers for Australian retaining walls — covering durability, lifespan, cost, maintenance, soil conditions, and which material is right for your project.

A practical guide to retaining wall post spacing for concrete sleeper walls in Australia — covering standard spacing by wall height and soil type, how spacing affects post selection, and when to confirm spacing with an engineer.

A practical guide to choosing between 75mm and 100mm concrete sleepers for retaining walls in Australia — covering wall height, soil conditions, surcharge loads, and when each thickness is the right specification.