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  2. General
  3. Infrastructure Development Processes
  4. Quality Assurance Information Requirements
    1. QA-1 Resource Consent Application Requirements
    2. QA-2 Works Undertaken By or For a Council
    3. QA-3 Development Works Approval
    4. QA-4 Survey Plan (s223) Approval
    5. QA-5 Final Sign Off (s224c) Application Requirements
    6. QA-6 As-Built Information
    7. QA-7 Bonds and Maintenance Fee
    8. QA-8 Building Consent Considerations
  5. Design Standards
    1. DS-1 General Provisions
    2. DS-2 Streetscape
    3. DS-3 Reserves
    4. DS-4 Transportation Network
    5. DS-5 Stormwater
    6. DS-6 Wastewater
    7. DS-7 Water Supply
    8. DS-8 Public Lighting
    9. DS-9 Network Utilities
    10. DS-10 Natural Hazards & Earthworks
    11. DS-11 Road Zone/Road Reserve Occupancy
    12. DS-12 Building Consent Considerations
  6. Standard Drawings
    1. SD-1 General Provisions
    2. Street design diagrams
    3. T100 Perspective Drawings
    4. T200 Streetscape
    5. T300 Reserves
    6. T400 Transport Network
    7. T500 Stormwater
    8. T600 Wastewater
      1. T601-Manhole - Standard
      2. T602-Manhole - Shallow
      3. T603-Manhole - Ladder and Steps
      4. T604-Manhole - Precast 1050mmØ Lid
      5. T605-Manhole - Entry Fixing
      6. T606-Manhole - Standard and Raised Access Detail
      7. T607-Manhole - Inclined Access Detail
      8. T608-Manhole - Internal Drop
      9. T609-Manhole - External Drop
      10. TT610-Manhole - PE Pipe Connections - Wall Adapter and Pre-Cast Manhole
      11. T611-Manhole - PE Pipe Connections - Stub Flange and In-Situ Base
      12. T612-Manhole - PE Pipe Connections - Electrofusion Coupler and In-Situ Base
      13. T613 Manhole - PE Pipe Connections - Puddle Flange and Pre-Cast Manhole
      14. T614-Manhole - Access Detail in Carriageway
      15. T620-Rodding Eye - Shallow < 2.5m
      16. T621-Rodding Eye - Deep > 2.5m
      17. T630-Property Connection - Standard
      18. T631-Property Connection - Depth > 2.5m
      19. T632-Property Connection - Within Property
      20. T633-Property Connection - Outside Property
      21. T634-Property Connection - Entry to Wastewater Main/Manhole
      22. T637-Lateral Connection - Single Connection to Manhole
      23. T638-Lateral Connection - Two or More Connections to Manhole
      24. T639-Lateral Connection - Single Connection to Main
      25. T640-Lateral Connection - Two Connections to Main
      26. T641-Lateral Connection - Two Adjacent Connections to Main
      27. T642-Lateral Connection - Rear Lot Connection
      28. T643-Mains Connection - Saddle Connection
      29. T651-Bedding and Backfill Details
      30. T652-Anti-Scour Block and Trenchstop
      31. T653-Buildings Near Public Mains
      32. T654-Close Proximity - Retaining Wall Restrictions
      33. T660-Pump Station - Typical Site Layout
      34. T661-Pump Station - Elevation Section
      35. T662-Pump Station - Plan Section
      36. T663-Pump Station - Pedestal Base Plate, Pedestal Mounting, Valve Chamber and Riser Connection
      37. T664-Pump Station - Deflector Plate, Ladder and Plinth
      38. T665-Pump Station - Valve Extension Spindle, Spindle Guide and Handwheel
      39. T666-Pump Station - Cover Slab
      40. T667-Pump Station - Frame
      41. T668-Pump Station - Chamber Lid
      42. T669-Pump Station - Chamber Lid Padlock and Handle
      43. T670-Pump Station - Rising Main Entry to Receiving Manhole
      44. T671-Pump Station - 25mm Water Service Connection
      45. T672-Pump Station - Electrical - Standard 2 Pump Stn Without Soft Starters (1 of 2)
      46. T673-Pump Station - Electrical - Standard 2 Pump Stn Without Soft Starters (2 of 2)
      47. T674-Pump Station - Electrical - Standard 2 Pump Stn SMC - 3 Soft Starters (1 of 2)
      48. T675-Pump Station - Electrical - Standard 2 Pump Stn SMC - 3 Soft Starters (2 of 2)
      49. T676-Pump Station - Electrical - Standard 2 Pump Stn IMS2 Soft Starters (1 of 2)
      50. T677-Pump Station - Electrical - Standard 2 Pump Stn IMS2 Soft Starters (2 of 2)
      51. T678-Pump Station - Electrical - Standard 2 Pump Stn ISMC - 3 Soft Starters (1 of 3)
      52. T679 Pump Station - Electrical - Standard 2 Pump Stn ISMC - 3 Soft Starters (2 of 3)
      53. T680-Pump Station - Electrical - Standard 2 Pump Stn ISMC - 3 Soft Starters (3 of 3)
      54. T681-Electrical - 2 Pump Stn Mincas SMC-3 Soft Starters (1 of 2)
      55. T682-Electrical - 2 Pump Stn Mincas SMC-3 Soft Starters (2 of 2)
      56. T683-Pump Station - Electrical Cabinet
    9. T700 Water Supply
      1. T700-Water Supply Pipe Hierarchy
      2. T701-Water Supply - Looped and Linked Principal Mains
      3. T705-Water Main - Location at Intersections
      4. T706-Watermain - Location at Cul de Sac
      5. T707-Water Main - Rider Main to Main Connection
      6. T708-Water Main - Flushing Point
      7. T709-Water Main - Branch Valves and Hydrant Combinations
      8. T710-Water Main - Support for Asbestos Cement Main
      9. T713-Hydrant Surround
      10. T714-Hydrant Box
      11. T715-Hydrant Surround Blocks
      12. T716-Valve Surround
      13. T717-Valve Box
      14. T718-Valve Surround 75mm Concrete
      15. T719-Valve Surround 100mm Concrete
      16. T720 Valve Surround Heavy Duty Concrete
      17. T721-Anchor block for Sluice Valves on Mains
      18. T722-Anchor Block for Flanged Fittings on Mains
      19. T723-Thrust Blocks
      20. T724-Hydrant and Valve Marker Post
      21. T727-Water Meter - Type 1 and 2 Point of Supply Location Installation
      22. T728-Water Meter - Type 3 and 4 Point of Supply Location Installation
      23. T729-Water Meter - Fire System Connection With Potable Supply Installation
      24. T730-Standard 20mm Manifold Connection
      25. T731-Standard 20mm Manifold Connections - Plan View
      26. T732-Multiple 20mm Installations
      27. T733-20mm Connection Requiring Double Check Valve
      28. T734-20mm Connection Requiring RPZ Installation
      29. T735-25mm, 40mm or 50mm Meter Installation With Double Check Valve
      30. T736-<50mm Meter Installation with RPZ
      31. T737-Property Connection - 50mm Combination Meter Installation with Double Check Valve
      32. T738-Combination Meter Installation with RPZ
      33. T739 >50mm Combination Meter Installation with RPZ & Bypass Option
      34. T740-Property Connection - Secure Connection
      35. T741-Manhole - Class A Loading
      36. T742-Chamber - Class A Loading
      37. T743-Manhole - Class B Loading
      38. T744-Chamber - Class B Loading
      39. T751-Bedding and Backfill Details
      40. T753-Buildings Near Public Mains
    10. T800 Public Lighting
    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

DS-7.9 Further Considerations

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The following shall also be considered as part of the design process:

  1. DS-7.9.1 Manholes and Chambers for Control Valves and Bulk Flow Meters.
  2. DS-7.9.2 Special Measures for Pumping and Storage.
  3. DS-7.9.3 Trenchless Pipe Installation.
  4. DS-7.9.4 Rural.
  5. DS-7.9.5 Easements.

DS-7.9.1 Manholes and Chambers for Control Valves and Bulk Flow Meters

Drawing Ref: T722, T741, T742, T743, T744

Chambers are required for control valves (generally pressure reducing valves and bulk water meters) and shall be specifically designed. Designers are encouraged to discuss their design with Council prior to completing the detailed design of a chamber. Designs shall consider the following parameters: 

  1. Fittings
    1. Spacing between valves, fittings, upstream and downstream faces of bulk meters shall be allowed for in accordance with the manufacturers’ recommendations. As a minimum, 5 diameters upstream and 2 diameters downstream of bulk meter flange faces shall be straight pipe lengths.
    2. Sufficient clearance and appropriate fittings shall be allowed for to facilitate installation, access to bolts and dismantling and removal of equipment, including sufficient clearance from the face of the chamber to flanges.
    3. Space for practical access and maintenance between the fittings and the chamber sides/floor shall be allowed for.
    4. Reducers and isolating valves shall be installed outside of the chamber. Anchors for thrust and/or movement prevention shall also be constructed outside the chamber in accordance with T722.
    5. All flush joints shall to be sealed to ensure water tightness. 
  2. Chamber
    1. Chambers housing control valves (with or without bulk meters) shall have a full opening access. 
    2. Chambers housing bulk meters may have a standard cast iron 600mm Ø manhole lid where the chamber will be infrequently accessed. Should the operation of this chamber require frequent access, Council shall be contacted for advice. 
    3. Galvanised mild steel supports shall be designed to provide vertical support for the infrastructure. Please refer to T741.
    4. Access steps shall be per AM-5.4.4.
    5. Where chambers are situated in free draining soils and not at risk of high water tables, drainage of the chamber shall be provided for.
    6. The chamber pipe interfaces shall be sealed to prevent water/moisture ingress. Chamber joints are to be sealed.
    7. Chambers situated where there is risk of surface inflow of water shall have a double sealed cast iron lid installed to prevent water ingress. A localised sump may also be necessary and requires discussion with Council on a case by case basis.
    8.  Refer to Table 7.6: MH/Chamber Sizing for guidance on selecting the appropriate chamber size.


 Table 7.6: MH/Chamber Sizing

Type of Infrastructure Nominal Diameter of Infrastructure Chamber Diameter Lid Diameter
Bulk Meter (BM) < 200mm 1050mm Ø 600mm Ø
Bulk Meter (BM) >200mm 1200mm Ø 600mm Ø
Pressure Reducing Valve (PVR) <200mm 1200mm Ø 1200mm x 1200mm
Pressure Reducing Valve (PVR) >200mm 1500mm Ø 1200mm x 1200mm

Combo

(BM + PRV)

80mm / 80mm 1200mm Ø 1200mm x 1200mm

Combo

(BM + PRV)

100mm / 10mm 1200mm Ø 1200mm x 1200mm

Combo

(BM + PRV)

150mm / 150mm 1500mm Ø 1200mm x 1200mm

Combo

(BM + PRV)

200mm / 200mm 1650mm Ø 1200mm x 1200mm

Combo

(BM + PRV)

>200mm / 200mm Specific Design Specific Design
  1. For further guidance regarding the sizing of chambers, refer to T741.
  2. Operation and maintenance shall be considered including confined space access and mitigation of risk to maintenance personnel.
  3. Bulk meters and control valves that are required to be linked to telemetry, shall include ducting and support for cables entering (and being fastened to) the chamber without compromising the chambers requirement to be watertight or the ability to access it.

DS-7.9.2 Special Measures for Pumping and Storage

Approval is required from Council before undertaking detailed design. Detailed design shall be required at the time of Development Works Approval. Where no Development Works Approval is required, then Council approval shall be obtained at a time required by Council before construction of the system.

DS-7.9.3 Trenchless Technology

The following shall apply:

  1. Trenchless technology may be preferred or required for alignments passing through or under:
    1. Environmentally sensitive areas.
    2. Built-up or congested areas to minimise disruption and reinstatement.
    3. Railway and major road crossings.
    4. Significant vegetation.
    5. Vehicle crossings.
  2. DS-7.5.3 Water Main Pipe Requirements specifies the minimum pipe classifications for trenchless installations however, designers shall still satisfy the following:
    1. The pipe material chosen shall have a tensile strength that exceeds the expected pull force. This could vary with ground conditions, contours, bends etc.
    2. Other factors such as the depth of pipe installation and expected load or trafficking over the pipe shall be factors of the design
    3. Trenchless installation does not provide the same quality of compaction as open cut installation therefore the ground support on the pipe wall can be less than compacted open cut installations. This shall be considered when confirming the pipe classification.
    4. The design pipe classification shall be confirmed within the design documentation and meet the requirements of AS/NZS 2566 Part 1.
Explanatory Note:
Council has set a minimum of “one pipe class up” for trenchless installation compared to open cut installations. This is the starting point for trenchless pipe selection but may still be inappropriate due to ground conditions that affect compaction strength, reduced ground support for the pipe, the “pull” strength required and / or scraping and scratching of the external wall of the pipe. 
  1. Designs shall confirm the position of all underground utilities and obstructions. No damage to other utilities, structures or similar shall be permitted.  

Refer to CS-13 Trenchless Technology for information on trenchless technology installation.

DS-7.9.4 Rural

The following shall apply:

  1. Where Council has not provided supply to meet either fire fighting or residential supply needs, a suitable supply of potable water shall be provided.
  2. Storage shall also be provided to meet the fire fighting capacity requirements for the relative activity as per PAS4509. For a residential dwelling this means a minimum on site storage requirement of a minimum of 40,000 litres storage, installation of a toby connection and all weather access.
  3. Where principal or trunk watermains are laid "across country" or not parallel to boundary lines, the location of the watermain is to be marked by H4 treated timber or concrete valve/hydrant posts, painted white, without the H or V mark.
Explanatory Note:
Council is not required to provide potable water to meet residential supply or fire fighting requirements outside of the urban water supply catchment. In these locations, should reticulation be available, connection may be made but no guarantee is provided about the adequacy of supply.

DS-7.9.5 Easements

Please refer to:

  1. DS-1.22 Easements.
  2. DS-1.22.9 Easements: Water Supply.

Definitions in this section

Council

Design

Designer

Development works approval

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