Coincrete Construction by Golde

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GOLDE are licensed concreting contractors, specialising in concrete placement for commercial driveways of all sizes. 

GOLDE have a range of plant including excavators, Possi track and tipping trucks that allow us to excavate, remove or import material as required. GOLDE will manage all aspects of the commercial driveway installation including the subgrade to achieve a level and well compacted layer, the subbase to achieve a strength and the surface which can be asphalt or concrete. Other finishes can be discussed, for example crushed rock, gravel or a washed stone.

GOLDE CONTRACTORS – CONCRETE DRIVEWAY SPECIFICATION SHEET

(Compliant with AS 3727.1, AS 3600, and AS 2870)

1. Scope of Works

Construction of a reinforced concrete residential driveway, including:

• Site preparation
• Excavation
• Subgrade and sub-base installation
• Reinforcement placement
• Concrete placement, finishing, and curing
• Installation of joints
• Compliance with drainage and council requirements

2. Applicable Standards

All works shall comply with the following Australian standards:

• AS  3727.1 – Pavements for Residential Areas
• AS 3600 – Concrete Structures
• AS 2870 – Residential Slabs and Footings
• AS 1379 – Specification and Supply of Concrete
• AS 4671 – Steel Reinforcing Materials

3. Materials

3.1 Concrete

• Strength: 25–32 MPa (minimum 25 MPa residential, 32 MPa recommended for      durability)
• Slump: 80–100 mm unless specified otherwise
• Maximum aggregate: 20 mm
• Finish: Broom / stipple / exposed aggregate as specified

3.2 Reinforcement

• Mesh: SL72 minimum
• Heavier vehicle load: SL82 or SL92
• Cover: 40 mm minimum
• Support: Plastic or steel bar chairs @ 800 mm centres

3.3 Sub-base

• 75–100mm crushed rock or road base (well compacted)
• Compaction: 95% Standard Proctor

4. Subgrade Preparation

• Excavate to required level
• Remove organic material, soft spots, and unsuitable fill
• Trim and compact subgrade to design level
• Apply a light water spray prior to concrete (if required)

5. Pavement Thickness

Driveway Use - Minimum Thickness

Cars / Utes / 4x4 - 100 mm

Medium vehicles (caravans, trailers, small trucks) 125–150 mm

Heavy or commercial traffic 150–200 mm

6. Joints

6.1 Control Joints

• Spacing: 2.5–3.0 m
• Depth: ¼ of slab thickness
• Saw-cut within 24 hours of the pour

6.2 Expansion Joints

Install at:

• Garage slab
• Pathways or other concrete structures
• Stormwater pits and kerbs
• Fences or rigid boundaries

Material: 10–12 mm bitumen-impregnated fibreboard or equivalent.

7. Drainage Requirements

• Minimum fall: 1% (1 in 100)
• Preferred fall: 2%
• Water must drain to legal point of discharge
• No ponding permitted on surface

8. Concrete Placement & Finishing

• Concrete shall be placed in one continuous operation
• Vibrate or rod to remove air pockets
• Finish to specified texture
• Edges to be neatly tooled or boxed

9. Curing

Curing method (one required):

• Continuous wetting for 7 days
• Curing compound applied immediately after finishing
• Plastic sheeting secured over slab

Driveways must be protected for:

• 24 hours – no foot traffic
• 7 days – no cars
• 28 days – full strength

10. Quality Assurance

Golde Contractors will:

• Verify concrete delivery dockets
• Ensure reinforcement is correctly supported and spaced
• Check joint layout prior to pour
• Confirm falls and drainage meet AS 3727.1
• Document major stages with photos for client handover

11. Optional Upgrades

• Coloured oxide concrete
• Exposed aggregate finish
• Decorative saw cuts
• Additional thickening for heavy vehicle access
• Steel dowels at joints
• High-strength 40 MPa concrete for premium driveways