Retaining Wall Construction & Engineering Principles
At 4:17 in
How NOT to build a retaining wall
What happens here
This crucial phase involves the construction of several multi-tiered retaining walls and integrated steps across the sloped backyard. The walls are built using interlocking concrete blocks, with gravel backfill and geogrid reinforcement to ensure stability. The professional emphasizes that these walls must be engineered for factors like surcharge (weight from structures above, like houses or other walls) and the natural 'slip zone' of the hill. He also highlights the importance of proper soil selection (clean, compactable, structural fill with a clay-based binder) and that walls should never be physically connected to the house foundation to allow for independent movement.
Goal: Build stable, engineered retaining walls and stairs on the slope.
Tools and materials
- Geogrid — Reinforcing the soil behind retaining walls, especially on slopes or with certain soil types
- Gravel — Backfilling behind retaining walls for drainage
- Hammer — Adjusting retaining wall blocks into place
- Level Unspecified — Ensuring blocks are level and plumb during installation
- Plate Compactor — Compacting the base and backfill layers of the retaining wall
- Rake Unspecified — Spreading and leveling materials
- Shovel Unspecified — Moving and leveling soil and gravel
- Clean — Backfill material behind retaining walls
What they say
(2,498 characters)Hide
What they say
(2,498 characters)Auto-generated from the video audio.