Compacting the Gravel Sub-base

What happens here

Begin by ensuring the gravel sub-base is spread evenly across the entire area where a stable foundation is required. Use heavy-duty rakes or grading tools to achieve a consistent depth and a relatively level surface. Once the gravel is initially spread and leveled, commence the compaction process using a vibratory plate compactor. Operate the compactor in systematic, overlapping passes across the entire area. A common technique is to make parallel passes in one direction (e.g., north to south), then turn 90 degrees and make perpendicular passes (e.g., east to west) to ensure comprehensive coverage and maximum density. As compaction progresses, the gravel may settle unevenly, creating depressions or high spots. Periodically use the heavy-duty rakes to re-level these areas, spreading gravel from high spots into low spots, and then re-compact those specific areas. Continue this cycle of compacting, leveling, and re-compacting until the entire gravel base is uniformly dense, stable, and firm. This thorough compaction significantly reduces the chance of future settling, which is critical for supporting subsequent layers like concrete slabs or finished flooring.

Goal: Achieve uniform compaction and stability of the gravel sub-base