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

IT-6.2 Testing

PreviousNext

Please refer to IT-1 General Provisions for the procedure for initiating testing attendance by Council Representatives.

IT-6.2.1 Pre-Testing

All wastewater mains, branch pipelines and extended connections shall be pre-tested during construction. The Contractor and Engineer must be satisfied that the final test will pass (by undertaking pre-testing), before initiating the final test with Council.

IT-6.2.2 Gravity Reticulation

The following applies to testing of gravity reticulation:

  1. All testing shall be carried out when backfilling is complete and prior to final surface sealing and/or pavement works being completed if within the carriageway.
  2. All manholes and pipes shall be flushed before testing.
  3. No infiltration of water either via a manhole or pipe is permitted.

IT-6.2.2.1 Low Pressure Air Test

TS 6.1

  1. Unless pipes are installed under natural groundwater, this test shall be undertaken on all pipes unless another test method is agreed to by Council.
  2. The pipeline to be tested shall be effectively plugged by fixing suitably strutted plugs at both ends and into side connections with particular care being taken to fix plugs against movement. Air shall be introduced by suitable means (such as hand pumps) until either:

A pressure of 300mm of water is indicated by a suitable manometer (such as a U-tube) connected to the system. 

As noted on test sheet TS-6.1 Low Pressure Air Test.

  1. After the air has attained a uniform temperature, as indicated by the pressure becoming steady, the source of air supply shall be physically disconnected and the pressure drop measured after a test period of 5 minutes.
  2. The acceptance limit shall be a pressure drop not exceeding 50mm in 5 minutes.
  3. All results and comments shall be recorded on test sheet TS-6.1 Low Pressure Air Test
  4. If the test is passed, the test sheet shall be signed by:

The Contractor who completed the test.

The Certifying Engineer or their Representative to certify that the test has passed all requirements.

Council's Representative as a witness to ensure that the test was undertaken correctly.

  1. If the test does not pass the Engineer and Contractor shall investigate the reason/s for the test failure, fix the problem/s and rearrange a new test.

IT-6.2.3 High pressure Air Test

TS 6.2

  1. Where pipes are installed under natural groundwater, this test shall be undertaken on all pipes unless another test method is agreed to by Council.
  2. The pipeline being tested shall be plugged as for the Low Pressure Air Test, care being taken to secure the plugs against movement and pressurised by a compressor or other appropriate means to a pressure of 25kPa.
  3. A period of at least 2 minutes shall be allowed to ensure temperature stabilisation. The source of air supply shall be physically disconnected and the time for the test pressure to drop from 25kPa to 17kPa noted.
  4. The acceptance limit shall be as follows:

    Pipe diameter

    (mm)

    Time for permissible pressure drop

    (minutes)

    100

    150

    200

    230

    250

    300

    3.0

    4.0

    6.0

    6.5

    7.5

    9.0

  5. If the test is passed the Test Sheet shall be signed by:
    1. The Contractor who completed the test.
    2. The Certifying Engineer or their Representative to certify that the test has passed all requirements.
    3. Council's Representative as a witness to ensure that the test was undertaken correctly.
  6. If the test does not pass the Engineer and Contractor shall investigate the reason/s for the test failure, fix the problem/s and rearrange a new test.

IT-6.2.4 Rising Main Pressure Test

TS 6.3

  1. Pressure testing shall be undertaken in accordance with the procedure on test sheet TS 6.3 - Wastewater Rising Main Pressure Test.
  2. All results and comments shall be recorded on test sheet. TS 6.3 - Wastewater Rising Main Pressure Test.
  3. If the test is passed the Test Sheet shall be signed by:
    1. The Contractor who completed the test.
    2. The Certifying Engineer or their Representative to certify that the test has passed all requirements.
    3. Council's Representative as a witness to ensure that the test was undertaken correctly.
  4. If the test does not pass the Engineer and Contractor shall investigate the reason/s for the test failure, fix the problem/s and rearrange a new test.

IT-6.2.5 Manhole Testing

Where required by Council, manholes shall be water tested. The test shall satisfy the requirements noted under testing sheet TS-6.4 Manhole Infiltration Test.

IT-6.2.6 Wastewater Pump Station Commissioning 

Commissioning of pump stations shall comply with:

  1. IT-6.2.6.1 Pumps
  2. IT-6.2.6.2 Electronic Equipment
  3. IT-6.2.6.3 Control Systems

IT-6.2.6.1 Pumps

This involves but is not limited to the following:

  1. Ensuring all chambers and pumps are clear of all debris and tools.
  2. Operation of each pump separately and in their possible combinations to confirm system and component performance.
  3. Check for excess vibration and noise.
  4. Check pump polarity/rotation.
  5. Receipt of factory test certificate for the pumps.
  6. Pumps shall be set to work in the normal automatic operation mode after the tests have been completed.

IT-6.2.6.2 Electronic Equipment

This involves but is not limited to the following:

  1. All tests and checks required for provision of an electrical compliance by a registered electrician.
  2. Receipt of factory test and calibration certificates.
  3. Tests as per manufacturers installation requirements.
  4. Calibration check against a standard.
  5. Confirmation of protection against out of specification power impulses.
  6. Ensuring that all overload systems are functioning.
  7. Checking signals to and from the control system.
  8. Checking signals to and from remote sensors.
  9. Checking signals from all level control equipment to ensure safe operation and to ensure machines will not run dry.
  10. Setting to work in the normal automatic operational mode after the tests have been completed

IT-6.2.6.3 Control Systems

This involves, but is not limited to, the following:

  1. Ensure all mechanical, electrical and electronic systems are set to work and are “on-line” to operate.
  2. Simulate all level induced control functions.
  3. Operate all control modes.
  4. Check all remote control and monitoring functions.
  5. Where any of the above fail to satisfy the requirements of the specification or the Engineer, correct the defect/s and retest.
  6. Oversee operation and carry out adjustments as necessary throughout the defects liability period.

IT-6.2.7 Testing of Butt Welds in Polyethylene Pipes

Please refer to IT-5.2.1 Testing of Butt Welds in Polyethylene Pipes.

IT-6.2.8 Testing of Electrofusion Welds in Polethylene Pipes

Please refer to IT-5.2.2 Testing of Electrofusion Welds in Polyethylene Pipes.


Definitions in this section

Contractor

Council

Engineer

Pavement

Wastewater

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

Back To Top