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    15. CS-15 Road Pavement Layers
    16. CS-16 Kerb & Channel
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    20. CS-20 Berm Features
    21. CS-21 Street Structures
    22. CS-22 Road Maintenance
    23. CS-23 Grassing & Turfing
    24. CS-24 Vegetation Planting & Gardens
    25. CS-25 Reinstatement
  9. Inspection & Testing Requirements
    1. IT-1 General Provision
    2. IT-2 Streetscape
    3. IT-3 Reserves
    4. IT-4 Transportation Network
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    7. IT-7 Water Supply
    8. IT-8 Public Lighting
    9. IT-9 Network Utilities
Infrastructure Development Code

CS-15.2 Sub-Base Layer

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No sub-base layer material shall be placed until the subgrade has been satisfactorily completed and approved by the Engineer.
The sub-base layer shall be constructed to the final shape as shown on the approved drawings.
NZTA Specification B/02 Construction of Unbound Granular Pavement Layers shall apply except as modified by the following:

  1. The reduced level of any point on the surface of the sub-base layer shall be within the limits 10mm above to 10mm below the designed or nominated level as established by stringing.
  2. Compaction of the sub-base layer shall be tested for acceptance as detailed in IT-4.2.2 Sub-base Testing in Transportation Network – Inspections and Testing.
  3. National Association of Australia State Road Authorities (NAASRA) roughness measurements are not required.

Definitions in this section

Approved drawings

Engineer

NZTA

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