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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-7.6 Conveyance Reticulation Layout

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Drawing Ref: T701, T705, T706, T709

City Plan Performance Standard: Appendix 12D
  1. Principal and rider mains shall, excluding road crossings, be located within the road zone berm and be separated from any other infrastructure or services laid parallel to it.
    1. Safe, reasonable and practical access shall be provided to the water supply system for its maintenance.

The layout of the primary reticulation system shall be designed to the following minimum requirements:

  1. The reticulation layout shall be:
    1. Provided on both sides of the street for principal mains on arterial and dual carriageway streets.
    2. Located within the road berm, laid parallel to the property boundary.
    3. No closer than 1.8m to any property boundary. 
    4. Set back a minimum of 500mm from the kerb line. A reduction up to 500mm set back from a property boundary shall be provided for at road intersections.
    5. Provided as shown on the Standard Drawings for the alignment of water mains at street intersections.
    6. Inclusive of a 500mm horizontal separation between the watermain and any other utility service main or similar obstruction.
  2. Where reticulation cannot be located within the road berm, it shall be located parallel to and within 1.5 metres of the lot boundaries and be no larger than 150mmØ.
  3. Where the area of the berm between the back of the kerb and the boundary is steep (>2H:1V) and the standard position of the reticulation could undermine the stability of the slope over its life, the reticulation shall be located away from that zone of influence. It may, as a result, need to be laid under the footpath or possibly under the carriageway. These alternative locations are subject to approval by Council prior to design completion and construction commencing.

In all cases where these standard layouts cannot be achieved, proposed alternative layouts shall be referred to the Council for approval before installation

DS-7.6.1   Close Proximity Rules

The following shall apply:

  1. Buildings or structures to be constructed close to a main or lateral/connection shall comply with the requirements of standard drawing T753.
  2. Where a deviation or bend in a main is present, specific design is required. This shall address issues such as the impact of pressure loadings on the pipe, fittings and associated restraints e.g. thrust blocks, anchor blocks etc. 
  3. Buildings shall not be constructed over a main or over a connection point to a main.
  4. Encroachment of removable, non-permanent structures e.g. carports, decks, fences may be approved by Council when the structure is designed and built such that it can be dismantled easily in sections. The removal and re-erection of these structures shall be at no cost to Council. Council will assess each application on a case by case basis as the variables at each site will not always be the same e.g. pipe size, trench details etc. Council may add a record to the property file of any such approval to ensure that future property owners are aware of the approval and Council’s right to have the structure removed at any time for the purposes of maintenance work, emergency work or upgrade work.

DS-7.6.2   Cover over Pipelines

City Plan Performance Standard: Appendix 12D
  1. All pipelines are bedded, backfilled and covered to ensure that their structural integrity will not be compromised through existing ground conditions and anticipated service loads.

The following shall apply:

  1. The cover over water mains shall be as outlined in Table 7.5: Pipe Cover.
  2. Under State Highways and rural roads a water main may traverse a water table etc. Approval of the minimum cover shall form part of the Infrastructure Development Works Approval.
  3. The sections of main adjacent to a carriageway crossing may be deepened to allow the required cover under the carriageway without the provision of vertical bends. Similar provisions shall be made to give the necessary cover over valve spindles i.e. 350mm cover.
  4. Pipe cover and depth shall be stated on the detailed design drawings.
  5. Where minimum or maximum cover cannot be achieved, specific design of pipe and cover shall be required to achieve the manufacturer's requirements and ensure adequate protection of the pipe and fittings.


Table 7.5: Pipe Cover

Location Minimum Cover Maximum Cover
Footpaths and Berm 0.8m 1.4m ( to the bottom of the pipe)
Carriageways 1.0m
Private Property 0.8m

DS-7.6.3   Loads on Pipes

City Plan Performance Standard: Appendix 12D
  1. All pipelines are bedded, backfilled and covered to ensure that their structural integrity will not be compromised through existing ground conditions and anticipated service loads.

The following shall apply:

  1. All pipelines shall be designed to withstand all the likely loads that they may be subject to.
  2. Load parameters shall be designed to support an 8.2 tonne design axle load in the first instance.
  3. AS/NZS2566 Buried Flexible Pipelines shall be used as a design guide as applicable.
  4. During construction of the pipeline and other development works any loads relating to backfill techniques, construction traffic, temporary storage of materials and the like shall be incorporated into design parameters and construction methodology.


DS-7.6.4   Pipe Jointing

The following shall apply:

  1. PVC: 
    1. The general pipe to pipe connection method shall be via the use of rubber ring jointed pipes. 
    2. Connections to fittings shall be as detailed on the standard drawings.
    3. Connections for repair may utilise unrestrained mechanical couplers or any other method approved by Council or as specified in a Council maintenance contract. 
  2. PE:
    1. The general pipe to pipe connection method for 125mmØ and larger shall be via Butt Welding of pipe strings.
    2. The general pipe to pipe connection method for 63mmØ - 110mmØ and larger shall be via Butt Welding or Electrofusion of pipe strings.
    3. The length of pipe strings shall be selected considering advice from the pipe manufacturer, health & safety of installers and shall introduce no damage to the pipe or joints.
    4. Connections to fittings shall be as detailed on the standard drawings.
    5. Connections for repair may utilise electrofusion couplers or any other method approved by Council or as specified in a Council maintenance contract. 

DS-7.6.5   Concrete Capping

Concrete capping shall not be used except in exceptional circumstances. Approval from Council is required prior to construction.

DS-7.6.6   Pipe Bedding and Backfill

City Plan Performance Standard: Appendix 12D
  1. All pipelines are bedded, backfilled and covered to ensure that their structural integrity will not be compromised through existing ground conditions and anticipated service loads.

The following shall apply:

  1. Pipe bedding and backfill shall be specifically designed, shown on the detailed design drawings and submitted to Council for approval.
  2. All watermains under carriageways shall have sand or fine granular bedding and surround. 
  3. All backfill under carriageways shall be designed to allow for the required pavement layers for the class of road it is beneath.
  4. In all instances particular attention shall be shown to the compaction of these layers.

DS-7.6.7   Saline and Contaminated Areas

Where a reticulation main is to be located on or near saline or contaminated land, the following shall be provided to Council for approval:

  1. Options to de-contaminate or de-salinate the area.
  2. Selection of appropriate pipeline materials and jointing techniques to maintain water quality.
  3. Selection of pipeline materials to achieve the required life expectancy of the pipeline.
  4. Safety of construction and maintenance personnel.
  5. Special pipeline maintenance considerations.

All bolts, nuts and washers shall be gunmetal or stainless steel only.

DS-7.6.8   Flushing Points

Drawing Ref: T708

Flushing points shall be installed as shown on the Standard Drawings.

DS-7.6.9   Connection of Rider Main to Principal Main

Drawing Ref: T707

The following shall apply:

  1. Where a Rider main is to be extended at right angles to a principal main, it shall be connected with a ductile iron tee with a female threaded branch (or an elongated gibault joint, tapped) and with 50mm diameter or greater resilient seated gate valve as shown in the Standard Drawings.
  2. Where a rider main is to be extended along the same alignment beyond the end of the principal main, it shall normally be connected with a ductile iron tee (or elongated gibault joint) with an anchored blank end plate and with a vertical socket and right angle gate valve, as shown on the Standard Drawings.
  3. In all cases this pipe shall be well anchored by compaction along its length and terminated with a blank end gibault and an adequate concrete anchor block.
  4. Taper reducers (to be long tapers only) shall be adequately anchored.

DS-7.6.10   End Capping

End caps (end of reticulation lines) shall be specifically designed and provided to Council for approval.


Definitions in this section

Council

Design

Development works

Development works approval

Footpath

Lot

Owner

Pavement

Principal

Road

Street

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