1.2m Length Concrete Sleepers
1.2 metre concrete sleepers are ideal for small retaining wall sections, garden beds, short boundary dividers and tight access areas where larger sleepers may not fit. Their compact length allows for easier handling and installation, making them a great option for DIY landscaping and low-height walls.
This length is often selected for narrow garden paths, raised planter boxes or tiered retaining wall designs that require flexibility without sacrificing structural integrity. For standard walls, compare the 1.5m and 1.8m lengths.
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1.2m Length Concrete Sleepers, 1.5m Length Concrete Sleepers, 1.8m Length Concrete Sleepers, 100mm Width, 120mm Width, 150mm Width, 2.0m Length Concrete Sleepers, 2.4m Length Concrete Sleepers, 3.0m Length Concrete Sleepers, 50MPA Range 80-120mm Concrete Sleepers, 80mm Width, Concrete Sleepers for Retaining Walls, Concrete Sleepers Melbourne for Retaining Walls, Grey
Price range: $38.58 through $89.99 inc. GST Select options This product has multiple variants. The options may be chosen on the product page1.2m Length Concrete Sleepers, 1.5m Length Concrete Sleepers, 1.8m Length Concrete Sleepers, 100mm Width, 120mm Width, 150mm Width, 2.0m Length Concrete Sleepers, 2.4m Length Concrete Sleepers, 3.0m Length Concrete Sleepers, 50MPA Range 80-120mm Concrete Sleepers, 80mm Width, Charcoal, Concrete Sleepers for Retaining Walls, Concrete Sleepers Melbourne for Retaining Walls
Price range: $45.72 through $102.15 inc. GST Select options This product has multiple variants. The options may be chosen on the product page
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Choosing 1.2m Concrete Sleepers
Length sets your post spacing, not your wall capacity. A 1.2m sleeper spans 1.2m between post centres, so fewer posts per run than shorter lengths, but each sleeper carries more load between those posts. Thickness (75mm to 100mm) and concrete strength (40MPa or 50MPa, with a 60MPa range in SA) do the structural work, and the steel post series has to match the wall height. Our sleepers are steel reinforced with two N10 or N12 ACRS bars on certified ranges and made to AS3600.
At roughly 45kg in the 75mm profile, 1.2m sleepers are the easiest full sleepers to handle on tight sites, though two people are still the safe minimum. They are a stocked standard in most states, and their short span suits stepped and curved walls where longer sleepers would need cutting.
Order the full wall quantity in one batch: sleeper colour can vary slightly between factory pours, and a face built from two batches shows it. If you are sizing a whole wall, the retaining wall calculator works out sleeper counts, posts and footings together, and our guide to concrete sleeper sizes explains how length, thickness and strength interact.
Can I mix 1.2m sleepers with longer lengths in one wall?
Yes, walls commonly step between lengths at corners, ends and grade changes. Keep the post series consistent and order all lengths from the same batch so the colour matches across the face.
Do short sleepers need smaller posts?
Post size follows wall height and load, not sleeper length. A 1.2m sleeper in a 1m wall still needs the post series that suits a 1m wall.
