Formation and subgrade
Earthwork & bottom embankment
Earthwork creates a stable formation by controlling excavation, approved fill, layer thickness, moisture and compaction before the granular pavement layers are placed.
- Site clearing and earth cutting
- Approved-fill placement in layers
- Moisture conditioning and compaction
- Formation trimming and level checks
Execution approach
Typical work sequence
The final method, layer thicknesses, materials and inspection points are aligned with the approved drawings, specifications and actual site conditions.
Setting-out and cutting
Mark excavation limits and remove unsuitable or excess material.
Layer placement
Spread approved soil or fill material in controlled layers.
Moisture and compaction
Condition each layer and compact it to the specified requirement.
Formation approval
Trim the surface, verify line and level, and prepare for the road base.
Visual reference
Process and site record
The two process illustrations are identified in their captions; the remaining two images are client-supplied site photographs. Actual material approval and compaction testing follow the contract specification.