The S38 Adoption Process

Key Build Stage 2 Formation

illustration-4
Formation checksEvidenceFrequency
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)