Dry Stacking, Backfilling, and Compaction
At 5:26 in
Turning a STEEP Hill into a Flat yard #1
What happens here
The retaining wall is dry stacked for approximately four courses before backfilling commences. This allows for efficient block placement. Once the blocks are stacked, the previously laid geogrid is flipped up and structural fill soil is placed behind the wall. This soil, which is a granular material with a clay binder, is packed tightly using both a small 150-pound plate compactor in the drainage zone (closest to the wall) and a larger 'big packer' for the reinforcement zone (further back). This process of stacking, backfilling, and compacting is repeated for each set of courses.
Goal: Efficiently dry stack blocks, backfill with structural soil, and compact for stability.
Tools and materials
- 'Big Packer' — Compacting structural fill soil in the reinforcement zone
- 150-pound Plate Compactor Wacker Neuson — Compacting drainage aggregate near the retaining wall face
- Mini Excavator Bobcat 325 — Assisting with soil movement and grading
- Rake — Spreading and leveling soil
- Shovel — Spreading and leveling soil
- Skid Steer ASV RT-75 Posi-Track — Moving and spreading structural fill soil, especially on slopes
- Structural Fill Soil — Backfilling behind the retaining wall for structural support
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