Inspecting and testing the build

Key Build Stage 2 Formation

Formation checks

Evidence

Frequency

Verification of geotextile material

Tickets

All sources

Verification of capping material

Tickets

All sources

Inspection of formation levels

Visual

All lengths

Verification of subgrade design CBR

Visual

All lengths

Dynamic Plate test (DPT) or

Plate Bearing test (PBT)

Testing

One per 100m (DPT) or minimum two per site (PBT)