Concrete Sleepers / JD-SL-032
Storm Grey Smooth Concrete Sleeper - ISO 9001 Certified
A smooth-faced, steel-reinforced precast concrete sleeper in storm grey, a dark grey through-coloured concrete that gives a crisp, modern wall face. Use it to build retaining walls, garden beds and terraces. Each sleeper is 200mm high and 75mm thick, reinforced with two steel bars. Sleepers stack horizontally between galvanised steel H posts, with C posts at the ends, building the wall up 200mm at a time. Choose 1.6m, 2.0m or 2.4m to suit your post centres: shorter spans suit higher walls and softer ground, while longer spans use fewer posts on low walls.
Under 100 sleepers: usually delivered in 3–10 business days. 100 or more: we confirm your delivery date when you order.
Freight is priced to your delivery suburb for most metro areas, or will be confirmed with you before payment.
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01 / Product overview
ISO 9001:2015 certified manufacturer: made by a manufacturer whose quality management system is independently certified to ISO 9001:2015 for the manufacture of concrete retaining wall sleepers. A good fit for engineered walls and commercial work where documented quality assurance is required.
How sleeper lengths work: sleepers are sold by the post centres they suit: 1600, 2000 or 2400mm. The actual sleeper is about 10mm shorter so it fits between the posts. 1.6m spacing suits higher walls and softer ground; 2.4m uses fewer posts on low walls.
Tolerances: ±5mm on height and thickness, ±10mm on length.
Matching posts: these sleepers fit 100 Series posts: 100UC H posts between bays, 100PFC C posts at the ends, and corner posts where the wall turns.
Colour: concrete varies a little in colour and texture between batches, so order all the sleepers for one wall together.
Also order: sleeper wedges to hold each sleeper tight, concrete for the post piers, and post caps or AllCapps capping to finish the wall.
Supply: from our South East Queensland partner yards.
Check your wall design
In Queensland, walls over 1m high, or walls supporting a load such as a driveway or building, generally need an engineer's design and council approval. Confirm sleeper and post sizes against your design before ordering.
02 / Detailed specifications
Know exactly what you’re ordering.
- Product code
- JD-SL-032
- Application
- Retaining walls, garden beds, terraces and under-fence plinths
- Material
- Steel-reinforced precast concrete, 200mm high
- Finish
- Smooth face, storm grey (dark grey) through-coloured concrete
- Compliance
- Manufactured to AS 3600; supplier design tables to AS 4678. Engineer certification available on request
- Thickness
- 75mm nominal
- Reinforcement
- 2 steel bars
- Length
- suits 1600, 2000 or 2400mm post centres (actual sleeper about 10mm shorter)
- Tolerances
- ±5mm on height and thickness, ±10mm on length
- Quality
- made by an ISO 9001:2015 certified manufacturer
- Sales unit
- each
- Accreditation
- ISO 9001 certified
- Weight
- 57.0 kg
- Colour
- Storm Grey
- Delivery class
- Long and heavy vehicle freight
03 / Shipping
Delivered by truck.
Freight shown on your quote.
Sleepers are too long and heavy for a parcel service. Concrete sleepers are delivered by truck and need to be unloaded with a forklift, hiab, telehandler, Moffett or similar. Freight depends on your suburb and the weight of your order, and can vary with your site access.
Lead time
Under 100 sleepers: usually delivered in 3–10 business days. 100 or more: we confirm your delivery date when you order. Express delivery in 3 business days may be available on request. We confirm the date with you before you pay.
Delivery area
We deliver this product to Brisbane, Ipswich, Logan, Redlands, Gold Coast, Sunshine Coast, Toowoomba and Gympie. Outside these areas, freight is confirmed with you before payment.
Vehicle access
Allow a safe approach, turning space and a clear, level unloading point. Tell us about narrow gates, steep driveways or overhead obstructions.
Unloading & handling
Confirm who will unload and whether equipment is needed. A forklift, crane or tail-lift is not automatically included.
Freight & timing
Freight is separate from the product price. We confirm the freight charge and delivery window on your quote, before you pay.
04 / Product FAQs
Before you order.
What are storm grey smooth concrete sleepers?
Storm grey smooth concrete sleepers are precast, steel-reinforced concrete sleepers in storm grey, a dark grey through-coloured concrete that gives a crisp, modern wall face. Each is 200mm high and 75mm thick with two steel bars, made by an ISO 9001:2015 certified manufacturer, for retaining walls, garden beds and terraces.
What length storm grey concrete sleepers do I need?
Sleeper length is the distance between post centres. Choose 1.6m, 2.0m or 2.4m storm grey concrete sleepers to match your post spacing. A 2.0m sleeper is made about 10mm short so it slips between posts set at 2.0m centres. Shorter spans suit higher walls and softer ground; longer spans use fewer posts on low walls.
What does ISO 9001 certified mean for storm grey smooth concrete sleepers?
ISO 9001 is the international standard for quality management systems. The manufacturer of these sleepers holds independent certification to ISO 9001:2015 for making concrete retaining wall sleepers, so production follows audited, documented processes. That gives builders, engineers and certifiers documented quality assurance. It certifies the manufacturer's quality system, not each sleeper, and sits alongside compliance with Australian Standards.
How many storm grey smooth concrete sleepers and posts do I need?
Each sleeper is 200mm high, so divide the wall height by 200mm to get the number of courses. Multiply that by the number of bays (wall length divided by sleeper length) for the sleeper count. You need one more post than bays: H posts between bays and C posts at the ends.
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