In reinforced soil, lifts are usually 150 to 300 mm thick after compaction, and geogrid layers sit at set lift intervals up the wall. Over geosynthetics on soft ground, the first lift must be thick enough that equipment does not cut or rut the layer below. Thickness, moisture and compaction are logged for every lift.
Heard on the job
First lift over the grid is 12 inches minimum, and no tracked equipment on it until it's spread.
Also heard as
- layer
- fill lift
- compaction lift
Related terms
MSE wall
Mechanically stabilized earth wall: compacted fill reinforced with layers of geogrid or steel strips behind a facing.
Wrap-around facing
Wall or slope face formed by folding each geotextile or geogrid layer up the face and back into the fill above.
Installation damage
Loss of geosynthetic strength caused by placing, spreading and compacting fill on it.