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    5. QA-5 Final Sign Off (s224c) Application Requirements
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  5. Design Standards
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    5. DS-5 Stormwater
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    7. DS-7 Water Supply
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    9. DS-9 Network Utilities
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    12. DS-12 Building Consent Considerations
  6. Standard Drawings
    1. SD-1 General Provisions
    2. Street design diagrams
    3. T100 Perspective Drawings
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    8. T600 Wastewater
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    11. AB As-Built Drawings
  7. Approved Materials
  8. Construction Standards
    1. CS-1 General
    2. CS-2 Site Clearance
    3. CS-3 Earthworks
    4. CS-4 Excavation
    5. CS-5 Excavation in Trench
    6. CS-6 Fill
    7. CS-7 Bedding & Backfill
    8. CS-8 Subsoil Drainage for Earthworks & Roads
    9. CS-9 Pipework
    10. CS-10 Pipe Fittings
    11. CS-11 Manholes & Rodding Eyes
    12. CS-12 Sumps
    13. CS-13 Trenchless Technology
    14. CS-14 Road Ripping
    15. CS-15 Road Pavement Layers
    16. CS-16 Kerb & Channel
    17. CS-17 Concrete Work
    18. CS-18 Carriageway Surfacing
    19. CS-19 Roadmarking
    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
    5. IT-5 Stormwater
    6. IT-6 Wastewater
    7. IT-7 Water Supply
    8. IT-8 Public Lighting
    9. IT-9 Network Utilities
Infrastructure Development Code

CS-7.0 Bedding and Backfill

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Pipes shall be bedded and protected as shown the approved drawings. Where not specified, bedding and protection shall be in accordance with the particular manufacturer’s specifications. There shall be no sharp stones or large clay lumps in the bedding or surround. 

In public areas, backfilling shall keep pace with the laying of pipes so that there is no more than 20m of open trench at any time.
Care shall be taken during backfilling to prevent displacement of the laid pipes. 

The Contractor shall reinstate trenches within 7 days of back fill completion unless agreed otherwise by the Engineer. The surface level of the reinstated trench shall match the surrounding surface level.


Definitions in this section

Approved drawings

Contractor

Engineer

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