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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

IT-1 Appendix A.1 Inspection and Testing Summary

PreviousNext

Test Specified Undertaken by (IANZ certified) Descriptor Unit Quantity Number of Tests Required Target Result Requirements TCC Hold Point Check
1 Earthworks All Earth Filling
Earthworks Design           Provided to Council at either design approval or Development Works Approval phase. Y  
NZ Standard Compaction Curve (NZS 4402 Test 4.1.1) IANZ Certified Testing Company Soil Type 1 Soil type 2 Soil Type 3   N / A     N / A     N / A

1

1

1

Undertaken under the direction of the Geo-Professional. N  
Solids Density Determination IANZ Certified Testing Company Soil Type 1 Soil type 2 Soil Type 3   N / A     N / A     N / A

1

1

1

Undertaken as required by the Geo-Professional. N  

Compaction Testing - Primary: Nuclear Densometer Test

Used to determine maximum dry density and air voids.

NZS 4431 lists other methods that can be used in place of the NDM where necessary to determine maximum dry density and/or air voids.

In cohesive fill, measurement of air voids should be completed in conjunction with shear vane readings

IANZ Certified Testing Company Total volume of fill cu m    

Smaller Fill Projects:

Minimum of 2 per 500mm lift of fill per 500m³

 

Larger Subdivision Projects:

Undertaken under the direction of the Geo-Professional

Refer to DS-10.10.7.

Minimum dry density of not less than 95% or 98% of the value of the maximum dry density obtained from the laboratory sample. (target depends on the test method used for comparison. Refer NZS4431) 

 

Geo-Professional to state requirement in-fill specification.

 

Maximum average of 10% air voids over any 10 tests (completed on a single lift on the same day).

 

Maximum single test of 12% air voids.

N  
One Point Proctor Compaction Test

IANZ

Certified

Testing

Company

To be included as part of Nuclear Densometer Test. where variable fill material is being used (in place of numerous compaction curves).

Results used to determine Maximum Dry Density.

Requirement for test to be determined by the Geo-Professional.

N  

Compaction Testing - Supplementary

Cohesive soils - Undrained Shear

Strength using Shear Vane.

IANZ

Certified

Testing

Company

Minimum 1 test per500m3 of filling evenly distributed over the extent and depth of the filling. A minimum of 1 test per 500mm lift or part thereof.

2 tests per NDM test.

For larger subdivision projects, can be spaced out at the discretion of the Geo-Professional.

150kPa minimum average over 10 tests. completed on a single lift on the same day.

140kPa.

N  

Compaction Testing - Supplementary

Non-cohesive soils (sands / pumice) - Scala Penetrometer

IANZ

Certified

Testing

Company

Minimum 1 test per 500m3 of filling evenly distributed over the extent and depth of the filling. A minimum of 1 test per 750mm lift or part thereof to be completed through the full lift thickness. Target >5 blows per 100mm. N  

2

Streetscape

 

 

 

 

Inspection of plant/tree species

Engineer

1 inspection prior to planting

 

Y

 

 

Street tree inspection

Engineer

1 inspection per tree

Pass the requirements on IS-2.1 - Tree.

N

 

 

Street garden planting, structures

and surfacing.

Engineer

General inspection of completed gardens, structures and

surfaces.

Visually in accordance with approved plans and documents.

N

 

 

3

Reserves

 

 

 

 

Inspection of plant/tree species

CHR

1 inspection prior to planting

 

Y

 

 

Street tree inspection

CHR

1 inspection per tree

Pass the requirements on IS-2.1 - Tree.

N

 

 

Street garden planting, structures

and surfacing.

Engineer

General inspection of completed gardens, structures and

surfaces.

Visually in accordance with approved plans and documents.

N

 

 

4

Transportation

 

 

 

 

4.1 Subgrade

 

 

 

 

 

 

 

 

 

Subgrade design performance criteria

Engineer

 

 

 

 

Provided to Council at either design approval or Development Works Approval phase.

Y

 

 

Primary Test: Insitu CBR Testing.

Tests performed at a minimum of

15m intervals on alternate lanes

IANZ

Certified

Testing

Company

Road Length

Metres

 

 

As shown on the plans but if not specified, in cohesive subgrades CBR>7 in non-cohesive subgrades CBR>10.

N

 

 

Alternative: Scale Penetrometer.

Non-cohesive soils (sands/

pumice) only.

Tests performed in both wheel

tracks @ 10 metre intervals.

IANZ

Certified

Testing

Company

Road Length

Metres

 

 

Required CBR value or >6 blows per

100mm.

N

 

 

Alternative: Shear Vane.

Cohesive soils (ash) only.

Tests performed in both wheel

tracks @ 10 metre intervals.

IANZ

Certified

Testing

Company

Road Length

Metres

 

 

>150Pa.

N

 

 

Alternative: Benkelman Beam.

Tests performed at a minimum of

15m intervals on alternate lanes.

IANZ

Certified

Testing

Company

Road Length

Metres

 

 

As approved and displayed on the approved plans or if not specified then average deflection <4mm.

Deflections in excess of 6mm will require remedial action determined by the Engineer.

N

 

 

Stringing at not less than 20 metre intervals

Contractor

Road Length

Metres

 

 

Finished subgrade is uniform and smooth with the finished level no more than 0mm above, and 20mm below design level.

N

 

 

 

Geogrid

Contractor

As instructed by the Engineer

Detailed record of geogrid type and locations.

N

 

 

Digouts

Contractor

As instructed by the Engineer

Detailed record of digout depth and locations.

N

 

 

                   

 

Finished subgrade inspection

CHR

 

 

 

 

Acceptance of the subgrade and its test results by both CHR and Council.

Y

 

 

4.2 Subbase GAP 65

 

 

 

 

 

 

 

 

 

4.2.1 Materials Testing

 

 

 

 

 

 

 

 

 

Grading/ Sieve analysis within 2 months

IANZ Testing Company or Quarry Test Data

Relevant Stockpile

<400m3

400-1500m3

1500-4000m3

>4000m3

2

3

4

1 per 1000

 

Complies with grading limits referenced in IT-4.2.2 Sub-base Testing Table 2.

N

 

 

Sand Equivalent within 2 months

IANZ Testing Company or Quarry Test Data

 

<400m3

400-1500m3

1500-4000m3

>4000m3

2

3

4

1 per 1000

 

Complies with grading limits referenced in IT-4.2.2 Sub-base Testing Table 2.

N

 

 

Crushing Resistance within 6 months

IANZ Testing Company or Quarry Test Data

 

<400m3

400-1500m3

1500-4000m3

>4000m3

2

3

4

1 per 1000

 

Complies with grading limits referenced in IT-4.2.2 Sub-base Testing Table 2.

N

 

 

Laboratory CBR within 6 months

 

 

Project

 

1

Complies with grading limits referenced in IT-4.2.2 Sub-base Testing Table 2.

N

 

 

Laboratory Compaction curve within 6 months

 

 

Project

 

1

 

N

 

 

4.2.2 Compaction Testing

 

 

 

 

 

 

 

 

 

Compaction Testing.

Nuclear Densometer in backscatter transmission mode.

Tests performed at 15m intervals on alternate lanes.

IANZ Testing Company or Quarry Test Data

 

Tests performed at 15m intervals on alternate lanes.

 

 

Average 95% MDD minimum 92% MDD

(Refer to IT-4.2.2.1 Compaction of

Sub-base).

N

 

 

Stringing not less than 20 metre intervals

Contractor/

Engineer

 

not less than 20 metre intervals

 

 

Tolerance +0 or -20mm. Sub-base surface is uniform and smooth.

N

 

 

Sub-base inspection

Engineer

 

 

 

 

Acceptance of the sub-base and its test results by both Engineer and Council

Y

 

 

4.3 Basecourse GAP 40 or AP40 as specified in drawings

 

 

 

 

 

 

 

4.3.1 Materials Testing

 

 

 

 

 

 

 

 

 

Grading/ Sieve analysis Within 2 months

IANZ Testing Company or Quarry Test Data

Relevant Stockpile

>400m3

400-1500m3

1500-4000m3

>4000m3

2

3

4

1 per 1000

 

Complies with grading limits referenced in IT-4.2.3 Basecourse Testing Table 3 and Table 4.

N

 

 

Sand Equivalent Within 2 months

IANZ Testing Company or Quarry Test Data

 

<400m3

400-1500m3

1500-4000m3

>4000m3

2

3

4

1 per 1000

 

Complies with grading limits referenced in IT-4.2.3 Basecourse Testing Table 3 and Table 4.

N

 

 

Crushing Resistance Within 6 months

IANZ Testing Company or Quarry Test Data

 

<400m3

400-1500m3

1500-4000m3

>4000m3

2

3

4

1 per 1000

 

Complies with grading limits referenced in IT-4.2.3 Basecourse Testing Table 3 and Table 4.

N

 

 

Weathering Resistance Within 6 months

IANZ Testing Company or Quarry Test Data

 

<400m3

400-1500m3

1500-4000m3

>4000m3

2

3

4

1 per 1000

 

Complies with grading limits referenced in IT-4.2.3 Basecourse Testing Table 3 and Table 4.

N

 

 

Laboratory CBR Within 6 months

IANZ Testing Company

 

 

 

1

CBR>80

N

 

 

Laboratory Compaction curve within 6 months

IANZ Testing Company

 

 

 

1

 

N

 

 

4.3.2 Compaction testing

 

 

 

 

 

 

 

 

 

Benkelman Beam total and D250/D0 - Testing at not less than 15 metre intervals alternate lanes

IANZ Testing Company

Road Length

Metres

 

 

As shown on the plans but if not specified, average deflection <3mm. And none >4.5mm. D250/D0 >0.54 for chip seal and 25mm ashphalt, >0.65 for 40mm asphalt and >0.70 for >50mm asphalt.

N

 

 

Compaction Testing.

Nuclear Densometer in backscatter transmission mode.

Tests performed at 15m intervals on alternate lanes.

IANZ Testing Company

Road Length

Metres

 

 

Average 95% MDD minimum 92% MDD

(Refer to IT-4.2.3.1 Compaction of Basecourse)

N

 

 

Stringing at not less than 20 metre intervals

Contractor/

Engineer

Road Length

Metres

 

 

Tolerance +5mm or -5mm. Basecourse surface is uniform and smooth.

N

 

 

Pre-seal inspection

Engineer

 

 

 

 

Acceptance of the basecourse and its test results by both Engineer and Council and pass the requirements on IS-4.2 - Pre-seal.

Y

 

 

4.4 Surfacing

 

 

 

 

 

 

 

 

 

Pre-seal inspection

Engineer

 

 

 

 

Acceptance of the membrane seal and its test results by both CHR and Council.

Y

 

 

4.5 Concrete

 

 

 

 

 

 

 

 

 

Footpath inspection

Engineer

 

 

 

 

Acceptance of the formwork and footpath subgrade by both CHR and Council.

Y

 

 

Vehicle Crossing inspection

Engineer

 

 

 

 

Acceptance of the basecourse and its test results by both CHR and Council and Pass the requirements on IS-4.1 – Vehicle Crossing.

Y

 

 

5

Stormwater

 

 

 

 

 

 

 

 

 

 

Visual Inspection ("lamping")

Engineer

Gravity

piped

reticulation

<50m

 

 

One inspection for each stormwater

line <50m.

Pipeline is straight for grade and alignment, has retained its shape (i.e roundness) and is clean.

N

 

 

Visual Inspection (walk through)

Engineer

Gravity

piped

reticulation

<1200mmÆ

 

 

One inspection for each stormwater

line >1200mmÆ

Pipeline is straight for grade and alignment, has retained its shape (i.e. roundness), is clean, joints are uniform, pipe barrel isn't cracked and little or no infiltration occurring.

 

 

 

CCTV inspections

Engineer

Gravity piped reticulation >50m

 

 

One inspection for each stormwater

line >50m

Meet the requirements of IT-1 Apx C.

N

 

 

Sump inspections

Engineer

Sumps

 

 

One inspection for each Sump

Pass the requirements on IS-5.2 Sump.

N

 

 

Manhole Infiltration Test

Engineer

Manhole

 

 

As instructed by Council

Pass the requirements on TS-6.4 Manhole Infiltration Test.

N

 

 

6

Wastewater

 

 

 

 

 

 

 

 

 

 

Manhole Structure Inspections

Engineer

Manhole

 

 

One inspection for each Manhole

Pass the requirements on IS-6.1 – Manhole & Pipework <50m.

N

 

 

Visual Inspection ("lamping")

Engineer

Gravity

piped

reticulation

<50m

 

 

One inspection for each gravity

line which is

<50m

Pipeline is straight for grade and alignment, has retained its shape (i.e. roundness) and is clean.

N

 

 

CCTV Inspections

Engineer

Gravity piped

reticulation

>50m

 

 

One inspection for each gravity line >50m

Meet the requirements of IT-1 Apx C.

 

 

 

Low Pressure Air test

Contractor

Gravity piped

reticulation ñ

ground

water table

 

 

One test for each gravity line.

Pass the requirements on TS-6.1 Low Pressure Air Test.

N

 

 

High Pressure Air Test

Contractor

Gravity piped

reticulation ò

ground

water table

 

 

One test for each gravity line

Pass the requirements on TS-6.2 High Pressure Air Test.

N

 

 

Rising Main Pressure Test

Contractor

Pressure Rising Main

 

 

One test for each pressure rising main

Pass the requirements on TS-6.3 Pressure Test.

N

 

 

Manhole Infiltration Test

Contractor

Manhole

 

 

As instructed by Council

Pass the requirements on TS-6.4 Manhole Infiltration test.

N

 

 

Pump Station Commissioning

Contractor

Pump Station

 

 

One inspection on completion

 

N

 

 

7

Water Supply

 

 

 

 

 

 

 

 

 

 

Fire Hydrant Inspections

Engineer

Hydrants

 

 

One inspection for all hydrants

Pass the requirements on IS-7.1 Hydrants.

N

 

 

Valve Inspections

Engineer

Valves

 

 

One inspection for all valves

Pass the requirements on IS-7.2 Valves.

N

 

 

Water Meter Inspections

Engineer

Water Meters

 

 

One inspection for all meters

Pass the requirements on IS-7.3 Water Connections.

N

 

 

Pressure Test

Contractor

Water Mains

 

 

 

Pass the requirements on TS-7.1 Pressure Test.

N

 

 

Disinfection

Contractor

Water Mains

 

 

 

Pass the requirements on TS-7.2 Installation Disinfection.

N

 

 

8

Public Lighting

 

 

 

 

 

 

 

 

 

 

Lighting Inspection

Engineer

 

 

 

 

Visual acceptance of the public lighting by both CHR and Council

N

 

 

9

Network Utilities

 

 

 

 

 

 

 

 

 

 

Broadband ducting inspection

Engineer

 

 

 

 

Acceptance of the broadband ducting prior to backfill by both CHR and Council.

Y

 

 

10

S224 Final Walkover

 

 

 

 

 

 

 

 

 

 

Final Inspection

Engineer

 

 

 

 

Acceptance of the finished development works and As-built plans by both Engineer and Council prior to application for s224.

Y

 

The

Consent Holders Representative

is required to notify

Council's

 

Development Engineer

not less than 48 hours prior to each test or inspection to allow for

Council

attendance.


Definitions in this section

As-built

Cohesive soil

Consent holder's representative

Contractor

Council

Design

Development engineer

Development works

Development works approval

Engineer

Footpath

Geo-professional

Road

Street

Streetscape

Stormwater

Sump

Wastewater

 

 

 

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