Search
× Search
Menu
  1. Home
  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-1.3 Alternative Design

PreviousNext

It is important that where the IDC can be used, it is used. The IDC contains collaboratively developed outcomes that provide a balanced representation for the needs and wants of Council and its landform and infrastructure industry co-stakeholders. Council acknowledges though, that design situations can differ from project to project. Therefore, the IDC is unable to provide a prescribed method for every situation a designer may encounter. 

The IDC alternative design process shall be used to manage these situations and ensure that these types of design achieve Councils required outcomes or do not unacceptably exceed them e.g.  increasing on-going costs to the community, providing an unnecessary outcome for an industry co-stakeholder. This process shall be followed by designers where:

  1. The IDC is silent on the design outcome needing to be achieved.
  2. The IDC is silent on issue/s that are required to produce a design outcome.
  3. The design is influenced by existing urban development, servicing and/or site specific constraints.
  4. An innovative design or new technology is proposed.
  5. A comprehensive land use activity is being proposed and the consideration of comprehensive planning, urban design principles and infrastructure development solution is required.

DS-1.3.1 Alternative Design Proposals

At the earliest time possible, Designers shall liaise with appropriate Council staff regarding any proposal to undertake an alternative design. Based on the subject matter, available expertise and the amount of information that is required to accompany an alternative design, applicants shall be aware of the following:

  1. Council is not obliged to accept an alternative design proposal. It is important to obtain concept approval from Council prior to formal application in order to ensure extra time and costs are not committed for a proposal that wouldn’t be (appropriately) considered by Council.
  2. All proposals require thorough investigation, as many contributing factors and potential viewpoints need to be considered.
  3. The processing time for these proposals is likely to be significantly longer than that for the existing prescribed IDC methods / outcomes due to the investigation required. 
  4. If the proposal departs from the requirements of the City Plan infrastructure performance standards and/or Resource Consent condition, this is likely to require a formal variation to the Resource Consent.
  5. The alternative design shall still deliver Council’s agreed levels of service, asset life and whole of life cost requirements.
  6. The alternative design shall not exceed current levels of service or whole of life costs in a way that creates legacy issues for Council in the future.

DS-1.3.2 Alternative Design Timing

Application for an alternative design approval can occur at any time but is most appropriate at the time of:

  1. Resource Consent application where an exception to the IDC has been identified.
  2. Development Works Approval for designs associated with a Resource Consent
  3. Application for an amendment to an existing Development Works Approval.
  4. Detailed design for a Council project.
  5. Unforeseen circumstances that require a solution. 

DS-1.3.3 Alternative Design Information Requirements

All alternative design applications shall be provided to Council via a report that includes the following:

  1. Identification of the project that the application relates to with reference to all other key approval documents such as the consent number, consent condition, contract number or the like.
  2. A summary of what you are trying to achieve e.g. what are you doing.
  3. A summary of the sections of the IDC you are requesting exception from.
  4. A detailed explanation regarding why the requirements of the IDC are not applicable to your project, therefore the need for the alternative design.
  5. Clear demonstration of how the proposal complies with:
    1. The City Plan infrastructure performance standards.
    2. Council’s specified asset life for each asset type.
    3. Appropriate industry and risk management practice.
  6. A summary of how the following components of the IDC will be achieved for the alternative design:
    1. Design methods.
    2. Construction techniques.
    3. Products and Materials.
    4. Inspection and Testing.
    5. Quality Assurance Requirements e.g. Certification, Reporting, As-Built Information. 
  7. Detail design plans, supporting information, calculations and any other evidence that will support your application.
  8. A summary of any potential effects to Councils operation and maintenance requirements.
  9. Any other information requested by Council via this process. These requests are likely to vary on a case-by-case basis depending on the asset discipline involved e.g. water supply, transportation etc.

DS-1.3.4 Alternative Design Approval

Approval of an alternative design applies only to the development works or project that the alternative design proposal covers. It does not approve the alternative for general use.

Physical works, purchases etc. shall not commence until formal written approval is received from Council.

DS-1.3.5 Alternative Design Effect on the Future IDC

Once the works are complete and to promote further development of the IDC, Council may consider the alternative design as an option for amendment and inclusion within the IDC.


Definitions in this section

Council

Design

Designer

Development works

Development works approval

IDC

Infrastructure

Infrastructure performance standards

Resource consent

 

 

Tauranga City Council, Private Bag 12022, Tauranga, 3143, New Zealand  |  Terms of use

Back To Top