Excavate and Prepare Sub-base for Patio and Wall
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Patio + vegetable garden. #vegetablegarden #paverpatio #hardscape #unilock
What happens here
After removing the old concrete, excavate the entire area designated for the new paver patio, steps, and retaining wall to a depth of approximately 8-10 inches (20-25 cm) to accommodate the base layers. Remove all topsoil, roots, and any loose debris. Lay down a heavy-duty geotextile fabric across the entire excavated area; this helps prevent the base material from mixing with the subgrade and improves stability. Next, spread a 4-6 inch (10-15 cm) layer of compacted crushed gravel or road base (e.g., limestone base). Use a plate compactor to thoroughly compact the gravel in multiple passes until it is dense and stable. Ensure the base is sloped away from the house (typically 1/4 inch per foot or 2%) for proper drainage, using a level and string line to check the grade.
Goal: Create a stable and properly drained foundation for the new hardscaping.
Tools and materials
- Gloves — Protecting hands during heavy labor
- Level — Checking the grade and levelness of the sub-base
- Pickaxe — Breaking up stubborn soil or small rocks during excavation
- Plate Compactor — Compacting the gravel sub-base for stability
- Safety Glasses — Protecting eyes during excavation and compaction
- Shovel — Excavating soil and spreading gravel
- String Line — Establishing straight lines and consistent grades
- Wheelbarrow — Transporting excavated soil and gravel
- Crushed Gravel — Creating the compacted sub-base for the patio and wall
- Geotextile Fabric — Separating the sub-base from the subgrade and enhancing stability