Site Preparation and Foundation
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2-tier retaining wall
What happens here
Before any construction begins, it's crucial to properly prepare the site. This involves excavating a trench for the wall's base, ensuring it is wide and deep enough to accommodate the base course and a compacted gravel foundation. The trench floor must be level and compacted thoroughly. A base of compacted gravel (approximately 6 inches deep) should then be laid and leveled precisely. This foundational work ensures the stability and longevity of the retaining wall. Although not explicitly shown in the provided video, this step is fundamental to proper retaining wall construction.
Goal: Establish a stable, level, and compacted foundation for the retaining wall.
Tools and materials
- Line Level — Checking the level of the string line
- Plate Compactor — Compacting the soil and gravel base
- Rake — Spreading and leveling gravel
- Shovel — Excavating the trench and spreading gravel
- String Line — Establishing straight lines and level grades
- Tape Measure — Measuring trench dimensions and block placement
- Crushed Gravel — Creating a stable and well-draining foundation