Prepare Base and Lay First Course
At 0:00 in
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What happens here
Begin by clearing the ground of any debris, loose soil, or vegetation. Once the area is clear, spread a layer of crushed gravel to serve as the base for the wall. Use a rake to evenly distribute the gravel and guide rails to maintain a consistent depth. Ensure the gravel base is thoroughly leveled with a spirit level and compacted (though compaction is implied by careful leveling). Carefully place the first course of rectangular concrete blocks on this prepared gravel base. Use a spirit level (both a long one and a smaller red one are shown) to check that each block is perfectly level both horizontally and vertically. A rubber mallet can be used to gently tap blocks into their precise position to achieve optimal leveling and alignment.
Goal: Establish a level and stable foundation for the retaining wall.
Tools and materials
- Guide Rails — To help maintain a consistent depth of the gravel base
- Rake — Leveling the gravel base
- Rubber Mallet — Tapping blocks into place for precise leveling
- Shovel — Clearing debris and spreading gravel
- Spirit Level — Checking the level and alignment of the blocks
- Concrete Blocks — Forming the base layer of the retaining wall
- Crushed Gravel — Creating a stable and well-draining base for the wall