Optimum Onyx Block 3 Bar Concrete Sleeper

What It Is

Optimum Onyx Block 3‑Bar Concrete Sleeper is a premium, reinforced concrete sleeper featuring a dramatic onyx block-face texture. It combines structural strength and aesthetic appeal—ideal for high-retaining walls, garden beds, and feature landscaping.

Key Features

• Striking Block Pattern Onyx Finish: Textured surface mimicking natural stone in a deep onyx hue for a bold modern statement.
• 3× N12 Steel Reinforcement Bars: Enhanced load capacity suitable for walls up to 2.4 m high. 
• High-Strength Concrete (40–60 MPa): Independently tested mix for outstanding durability. 
• Precision Engineering: Manufactured to tight tolerances (±2 mm), ensuring uniformity and straight, neat wall builds. 
• Long-Lasting Design: Engineered with a 60-year design lifespan—resists weathering, termites, and decay. 

Benefits

• Bold Aesthetic Impact: The block-patterned onyx color creates a striking visual anchor in any landscape.
• Superior Wall Strength: 3-bar reinforcement plus high-grade concrete ensures robust structural performance.
• Low Maintenance: No rot, no pests, and a sealed texture that looks great over time.
• Cost-Effective for Tough Jobs: Long life means less frequent repairs or rebuilds.
• Versatile Application: Effective for high walls, terracing, raised planters, steps, or dramatic borders.
• Landscape Ideas
• Statement Retaining Walls: Use in front yards or public-facing areas for a premium visual effect.
• Multi‑Level Terracing: Stack for stepped terraces on steep slopes for both functionality and flair.
• Feature Planters: Stylish, high-quality planter boxes for commercial or designer residential builds.
• Paved Area Borders: Frame driveways or patios with impactful onyx contrast.

How to Use It

1. Prepare a compacted base or concrete footing according to wall height.
2. Position galvanised H- or C-section posts at intervals (≈1.6–2.0 m based on design).
3. Slide sleepers into the posts with staggered joints for strength and flow.
4. Backfill with gravel and wrap with geotextile for drainage.
5. Ensure each tier is level and plumb for clean stacking.

Coverage Example

For a 10 m long wall at 400 mm high (2 courses):

• Use ~5 × 2.0 m sleepers per course → ~10 units total (plus 10–15% for cuts and waste).

Delivery and Pickup Options

We make it easy to get Optimum Onyx Block 3‑Bar Concrete Sleeper for your project:

Pickup: Bring your trailer or ute, and we’ll load it for you on-site.
Delivery: Available across South East Queensland, with clear freight rates displayed during checkout.

Rock-Solid Drama with Sleek Modern Style

Deliver high-impact design and unbeatable strength with the Optimum Onyx Block 3‑Bar Concrete Sleeper. Perfect for bold landscapes—order now to bring long-lasting design and depth to your outdoor spaces!