How do I remove concrete using a hired excavator?

## Concrete Removal Using a Hired Excavator in NSW Removing old concrete slabs, driveways, paths, and footings is a common project in Sydney — whether you're renovating, extending, or preparing for new construction. A mini excavator with a hydraulic breaker attachment makes concrete removal fast and efficient. ### Equipment Required for Concrete Removal **Hydraulic breaker (rock hammer):** A hydraulic breaker attachment replaces the bucket on the excavator and uses hydraulic pressure to drive a hardened steel chisel into the concrete, breaking it into manageable pieces. BuildHire offers hydraulic breaker attachments — contact 1300 157 882 to confirm availability. **Excavator:** The 3.5T is the standard choice for residential concrete removal. The 5.5T is more productive for larger areas. The 1.7T can be used for thin slabs (under 100mm) but is less efficient for thicker concrete. **Tipper truck:** Broken concrete is heavy — a standard residential driveway (50m², 100mm thick) generates approximately 12 tonnes of concrete rubble. BuildHire's tipper truck hire is ideal for concrete removal. ### Concrete Removal Process 1. **Mark the area:** Mark the concrete to be removed with chalk or spray paint. Identify any control joints that define natural break points. 2. **Break the concrete:** Use the hydraulic breaker to break the slab into pieces of 300–500mm. Work systematically across the slab. 3. **Remove the pieces:** Switch to the bucket attachment and use it to load the broken concrete into the tipper truck. 4. **Remove the base:** After the concrete is removed, the compacted base (typically 100mm of road base) can be removed with the bucket. 5. **Dispose of concrete:** Concrete rubble can be disposed of at licensed concrete recycling facilities. Many facilities in Sydney accept clean concrete rubble for recycling into road base. ### Concrete Thickness and Machine Selection | Concrete Type | Typical Thickness | Recommended Machine | |---|---|---| | Residential path | 75–100mm | 1.7T with breaker | | Residential driveway | 100–150mm | 3.5T with breaker | | Residential slab | 100–150mm | 3.5T with breaker | | Commercial slab | 150–200mm | 3.5T or 5.5T with breaker | | Reinforced concrete | 150–300mm+ | 5.5T with breaker | ### Reinforced Concrete Reinforced concrete (with steel rebar) is harder to remove than plain concrete. The breaker breaks the concrete; the rebar remains and must be cut with an angle grinder or bolt cutters before the pieces can be removed. Budget for additional time when removing reinforced concrete.