minimum standard for inspection, sampling and testing

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Minimum Standard for Inspection, Sampling and Testing NZTA Z8:2020 DECEMBER 2020

VERSION 5.0

NZTA Z8:2020 – Minimum requirements for Inspection, Sampling and Testing

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Waka Kotahi NZ Transport Agency has endeavoured to ensure material in this document is technically accurate and reflects legal requirements. However, the document does not override governing legislation. Waka Kotahi NZ Transport Agency does not accept liability for any consequences arising from the use of this document. If the user of this document is unsure whether the material is correct, they should refer directly to the relevant legislation and contact the Transport Agency.

More information NZ Transport Agency Published December 2020

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Waka Kotahi NZ Transport Agency Rev 5 – December 2020 of 36

Specification note This Specification will be updated periodically to incorporate advances in technology and changes within the industry. Waka Kotahi NZ Transport Agency website should be checked to confirm the most recent edition of the specification.

RECORD OF AMENDMENTS

Amendment Number Subject Effective Date Updated by

Version 3.0 Document issued March 2016 John Donbavand

Version 4.0 Document Issued October 2017 John Donbavand

Version 5.0 Document Issued December 2020 Johan Rivas



Table of Contents FOREWORD ......................................................................................................................................... 5

1. SCOPE .................................................................................................................................................. 7 2. RELATED DOCUMENTS ..................................................................................................................... 8 3. DEFINITIONS........................................................................................................................................ 9 4. INTRODUCTION ................................................................................................................................. 11 5. INSPECTION, SAMPLING AND TESTING ........................................................................................ 11

5.1 Inspection and Test Plans ...................................................................................................... 11 5.2 Sampling ................................................................................................................................. 11

6. VERIFICATION ................................................................................................................................... 12 7. CERTIFICATION ................................................................................................................................. 12 8. RANDOM VERIFICATION TESTING (RVT) ....................................................................................... 12 9. NON-CONFORMANCE REPORTS .................................................................................................... 12 10. HOLD POINTS .................................................................................................................................... 12

10.1 Release of Hold Points ........................................................................................................... 13 11. QUALITY RECORDS .......................................................................................................................... 13 12. INSPECTION, SAMPLING AND TESTING SCHEDULE ................................................................... 13 APPENDIX 1: ............................................................................................................................................. 14

Template for project specific inspection, sampling and test schedule .......................................... 14 1. EARTHWORKS CUT AND FILL ................................................................................................ 14 2. PAVEMENT LAYERS ................................................................................................................. 16 3. PAVEMENT SURFACING.......................................................................................................... 21 4. LANDSCAPE TREATMENTS .................................................................................................... 24 5. GEOTEXTILES ........................................................................................................................... 24 6. GEOSYNTHETIC SOIL REINFORCEMENT ............................................................................. 25 7. STONE COLUMNS .................................................................................................................... 25 8. WALLS ....................................................................................................................................... 26 9. FOUNDATIONS ......................................................................................................................... 27 10. TRAFFIC SERVICES ............................................................................................................. 28 11. LIGHTING ............................................................................................................................... 33 12. CONCRETE ........................................................................................................................... 33 13. STEELWORK ......................................................................................................................... 34 14. DRAINAGE, CHANNELS, NIBS & INCIDENTAL WORKS .................................................... 35 15. MANHOLES, CATCHPITS, INLET AND OUTLET STRUCTURES ....................................... 35 16. CULVERTS, PIPES ................................................................................................................ 36



FOREWORD This Minimum standard is prepared by Programme and Standards, Transport Services, Waka Kotahi NZ Transport Agency (Waka Kotahi).

The objective of this Minimum standard is to set out requirements for Consultants and Contractors undertaking the inspection, sampling and testing for Contract works.

The main changes that have been incorporated into this Minimum standard include:

• Promoting better collaboration between the Principal, Consultant and Contractor, and effective turnaround at Contract Hold Points.

• Requiring the development of an integrated approach to enable better tracking of compliance of the works.

• Expectation of a clearer statement of testing requirements for all parties.

• Timeliness and visibility of quality records.

Readers of this specification must also read and be aware of the Contract Manuals for Professional Services, Construction and Maintenance Contracts, as well as the Minimum standard for Quality Management plans – Z/1.


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1. SCOPE The purpose of this Minimum standard is to enable the supplier to integrate the statutory, technical and performance framework requirements of a Waka Kotahi contract into an Inspection, Sampling and Testing Schedule.

The supplier is accountable for meeting the quality of work delivered as defined within various applicable specifications and other requirements. And although the supplier is expected to have systems certified to international quality management standards (ISO 9001), the supplier must have an Inspection, Sampling and Testing Schedule that meets the minimum requirements as defined below.

The Inspection, Sampling and Testing Schedule for a Professional Services contract, a Physical Works contract or a Maintenance Works contract is referenced from the State highway professional services contract proforma manual (SM030), the State highway construction contract proforma manual (SM031), and the State highway maintenance contract proforma manual (SM032) respectively.

The Inspection, Sampling and Test Schedule (ISTS) presented as Appendix A is not an exhaustive list of testing required, nor is it a comprehensive list of areas to be covered, but is a prompt and minimum start point. This schedule, as a minimum, shall meet the testing and inspection requirements and frequencies of the relevant Waka Kotahi technical specifications, testing specified in other sections of the Minimum requirements within this document, and project specific detail design specifications. Collaboration between Consultants and Contractors is encouraged and expected to work together to produce an integrated and project specific schedule.

The Principal, Consultant, and Contractor need to work as a team to produce, as a minimum, the required quality in design and construction that will deliver infrastructure capable of performing its intended function throughout its design working life.



2. RELATED DOCUMENTS NOTE: Readers should comply with the most current publication of the specification being referenced.

SM030 State highway professional services contract proforma manual

SM031 State highway construction contract proforma manual

SM032 State highway maintenance contract proforma manual

Minimum Standard Z8 Inspection, sampling and testing



3. DEFINITIONS • Association of Consulting Engineers (ACE) Association of Consulting Engineers is the organisation representative of Consulting Engineers.

• Consultant The definition can mean designer, Independent Reviewer, Principal’s Advisor / Site Representative or Engineer’s Representatives, depending on the Contract Type.

• Contractor The Person whose tender has been accepted by the Principal or the Person who has been so named in the Contract, and includes the executors, administrators, and successors of the Contractor.

• Engineering New Zealand (ENZ - formerly IPENZ) Engineering New Zealand is the professional body representative of engineers.

• Hold Point At a specified point in the works as defined by the Contract documents when certain action(s) have been completed, no further work may continue until specific approval is given by designated accountable party to proceed.

• Contractor’s QA Manager A Quality Manager will be required to be appointed to act independently of day to day construction activities and to ensure that the requirements of the quality plan are implemented and maintained;

• Inspection and Test Plan(s) (ITP) An ITP is a document detailing a systematic approach to testing a system or product (e.g. material, component, machine, package, software, etc) such as a visual inspection, dimension inspection, destructive and non-destructive testing, functional test, factory acceptance test, etc. and participation of all parties.

• International Accreditation New Zealand (IANZ) International Accreditation New Zealand is the accreditation body of the Testing Laboratory Registration Council in New Zealand and ensures that testing laboratories meet international standards and can demonstrate that they are competent.

• Minimum standard In this Specification the words “Minimum standard” shall be interpreted as referring to the NZTA Z8 Minimum standard for Inspection, Sampling and Testing.

• Non-conformance reports (NCR) Report that addresses specification deviation or work that fails to meet quality standards. Must contain causes and remediation of parts of the Contract Works that have not met performance expectations or KPI.

• Principal The person named as such in the Special Conditions and includes its executors, administrators, and successors.

• Quality Assurance (QA) The maintenance of a desired level of quality in a service or product, especially by means of attention to every stage of the process of delivery or production.



• Quality File (QF) The Contractors secure document and record control storage and retrieval system holding all information, in agreed digital form(s), from the ITP and RVT, and all communications, reports and files on the quality of the works.

All the information held in the Contract specific QF will remain with the Principal for permanent record.

• Quality Management Plan (QMP) The Plan prepared by the Consultant and/or the Contractor that covers the quality processes particular to the specific Contract.

• Random verification testing (RVT) The random inspection, sampling and testing of the Contract works by the Consultant, to progressively monitor and report on the quality of the works.

• Supplier A legal entity (Consultant and/or Contractor, be they a sole proprietorship, partnership, limited liability company or trading trust) engaged to provide the services set out in the contract documents.

• Standard In this specification the word “Standard” shall be interpreted as the reference document referred in the contract, whether a Waka Kotahi approved regional or national document, or international document published by a recognised Standards organisation. Standards must be identified by their Standards organisation and number; e.g. AS/NZS 1906.3.

• Verification Confirmation, through physical inspection of the works and review of objective evidence provided by inspection and test records, that a specified requirement has been fulfilled.

• Waka Kotahi Waka Kotahi in this specification means the New Zealand Transport Agency established as defined by section 93 of the Land Transport Management Act 2003 with functions as set out in section 95 of that Act.



4. INTRODUCTION The purpose of inspection, sampling, testing, verification and certification on physical works contracts is to enable the Consultant and Contractor to provide tangible evidence to the Principal that the specified Contract works have been delivered successfully by means of an appropriate systematic approach acceptable to all parties.

Initially, during the preparation and approval of the Contractor's QMP (refer Minimum standard Z1, Clause 5 of NZS 3910:2013 and NZS 3916: 2013), the Principal, Contractor and Consultant shall confirm and agree on the scope and extent of the Contract specific Inspection, Sampling and Testing Schedule (ISTS) based on the template in Appendix 1. The ISTS elements are obtained from contractual requirements in the Technical specifications and / or Detail Design Report requirements for the different construction components.

Once agreement is reached, the Contract specific Inspection, Sampling and Testing Schedule (ISTS) shall be delivered by the Contractor to provide the Consultant and Principal with current, explicit information about the works to support informed decision making, leading to consistent and compliant physical works as per the required Contract outcomes.

During the preparation and approval of the Consultant's QMP, the Principal and Consultant shall confirm and agree on the scope and extent of the Contract specific Random Verification Testing (RVT) schedule.

The Contract specific RVT schedule shall be delivered by the Consultant, to provide the Principal and Contractor with an independent review of the physical works outcomes, thereby enabling certification of specified works (or parts thereof).

5. INSPECTION, SAMPLING AND TESTING All inspection and testing of the physical works, irrespective of who carries them out, shall be in accordance with the referenced standards, completed by competent, suitably qualified and experienced personnel and include, as required, IANZ Accredited Laboratory test results.

5.1 Inspection and Test Plans The Contractor shall prepare Inspection and Test Plans (ITP) for individual packages of work as per work breakdown structure (WBS). ITP’s shall be reviewed by the Consultant and approved in accordance with the Contractor’s QMP before construction commences.

The Contractor shall use the ITP to show the adequacy of the systematic approach taken in constructing a stage or stages of the construction works in accordance with the design, specification, KPI and referenced regional, national or international standards.

The ITP includes a combination of hold points, on-site inspections, sampling and testing, and regular laboratory testing.

5.2 Sampling Unless otherwise approved by the Consultant, the Contractor shall ensure that sampling included in the ISTS is undertaken by staff certified competent from an IANZ accredited laboratory authorised to do so.

The Specification may stipulate further sampling requirements and frequencies where applicable.



6. VERIFICATION The Contractor shall verify the adequacy of the status of the stage of work against the design, specification and referenced regional, national or international standards, based on evidence (both supplied and sought) from inspections and testing. Statements of verification shall be prepared and signed by a suitably qualified professional and include as appropriate IANZ accredited laboratory test results.

The Principal and Consultant shall have real-time (meaning having access to the results as it becomes available) visibility of all inspection and test results and can at any time query these, even if they are not involved in a hold point.

7. CERTIFICATION The Consultant shall certify compliance of the completed works (or parts thereof) in accordance with the design, specification and referenced regional, national or international standards, based on evidence (both supplied and sought) from Contractor’s quality control, independent monitoring and random verification testing.

Statements of certification shall be delivered on ENZ/ACE Producer Statements (PS 1 - Design; PS 2 - Design Review; PS 3 – Construction, PS 4 - Construction Review) for works requiring building consent. For work not requiring building consent, design and review certificates, construction certificates and construction review certificates are to be used.

8. RANDOM VERIFICATION TESTING (RVT) The Consultant will use RVT to progressively monitor and if necessary, randomly sample and test the Contract works in accordance with the design, specification and referenced regional, national or international standards. The RVT plan shall be compiled by the Consultant in collaboration with the Principal and Contractor and will be risk based.

The Contractor shall support and provide access to the Consultant to undertake RVT as specified in the contract (RVT schedule) and notified in writing at least 24 hours in advance.

9. NON-CONFORMANCE REPORTS If a non-conformance to a specification or other agreed requirement is identified during the verification or certification process, the Consultant shall request the contractor’s QA Manager to raise an NCR and forward it to both the Contractor and the Principal.

The Contractor must respond to that NCR in accordance with the procedures stipulated in the QMP.

10. HOLD POINTS The hold points as specified in the contract and/or agreed with the Consultant in the ITP shall be the stages in the construction (or parts thereof) beyond which work shall not proceed until:

• the Contractor’s Authorised Person can verify on behalf of the Contractor, based on evidence provided that all parts of the work up to that point meet the requirements of the Contract (Contractor’s Hold Point), following which work can proceed to the next Hold Point, or;



• the Consultant’s Authorised Person can certify on behalf of the Consultant (or Principal if so delegated), based on the evidence supplied and sought, that the completed work (or part thereof) meets the requirements of the Contract (Consultant’s Hold Point), following which work can proceed to the next Hold Point.

• In the event that the Principal has specified Principal holds point(s), the Authorised Person on behalf of the Principal can certify, based on the evidence supplied and sought, that the completed work (or part thereof) meets the requirements of the Contract (Principal’s Hold Point), following which work can proceed to the next Hold Point.

Technical specifications may provide further guidance on the minimum requirements for inspection and test schedules and hold points in physical works Contracts that must be included in the ISTS.

10.1 Release of Hold Points If the Consultant and Contractor cannot agree on release of a Hold Point, or ongoing review by the Consultant finds that the available evidence contradicts the Contractor’s verification that a Hold Point has been achieved, the matter will be referred to the Principal for determination of that release.

If the Contractor disagrees with the Principal’s ruling, the three Parties must meet and make all reasonable efforts in good faith to resolve the disagreement promptly and in a manner which minimises any impact on the performance of the Works. Should it not be possible for the Parties to reach agreement, the Contractor may choose to Dispute the outcome in accordance with the General Conditions of Contract.

To release any Hold Point, the works’ compliance must be signed off as complete to a satisfactory standard by a person authorised in agreement with the Principal to do so.

11. QUALITY RECORDS Unless otherwise approved by the Principal or Consultant, the results of all inspection, sampling, testing, verification and certification on physical works Contracts, all communications, reports and files on the quality of the works, shall be held in agreed digital form(s) on a secure document and record control storage and retrieval system, as the Contractor's Quality File (QF).

Results shall be dated and include a unique project and test specific sequential numbering system or systems, which shall be established and agreed with the Consultant at the time of contract award, based on the Contractor's QMP.

At the end of the contract, all the information held in the Contract specific QF will remain with the Principal for permanent record.

12. INSPECTION, SAMPLING AND TESTING SCHEDULE

The Contract specific ISTS shall be compiled from technical specifications and detail design report requirements, using as a starting point the template included in Appendix 1 to this document.


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APPENDIX 1: Template for project specific inspection, sampling and test schedule This table is not an exhaustive list of testing required, nor is it a comprehensive list of areas to be covered but is a prompt and minimum start point. This schedule is to be developed to meet the project specific requirements and, as a minimum, shall meet the testing and inspection requirements and frequencies of the relevant Waka Kotahi technical specifications, testing specified in other sections of the Minimum requirements within this document, and project specific detail design specifications.

Source Document Construction Component Test Frequency

1. EARTHWORKS CUT AND FILL

F/1 Fill and structural fill sources Consultant’s Hold Point – source approval Standard Compaction (including for additives i.e. lime and cement)

1 set (5 points) for each fill material and source (each 5,000m3 thereafter)

Natural Moisture Content Plasticity Index Particle Size Distribution

1 set of each test for each fill material and source (each 5,000m3 thereafter)

F/1 Fill and culvert subgrade – construction.

• Dynamic cone penetrometer to 3m. • Vane shear strength (Pilcon) to 3m.

1 test per 100m² or minimum of 3 per section of subgrade excavated per day.

• Surface drainage and proof rolling. • Monitor culvert settlement.

Check for each completed section of subgrade per day.

F/1 Structural fill – materials. Organic content. Continuous field observation.

Water content laboratory) Vane shear strength (Pilcon).

Continuous field observation and 1 test set per 400m³ of material cut.

F/1 Structural fill - construction. Standard compaction Solid density 1 test per 2,000m³ and at least 5 tests per material type.

Proof rolling per the Transport Agency’s Specification F/1.

100% of subgrade area.




• Density (nuclear densometer). • Water content (laboratory). • Air voids. • Vane shear strength (Pilcon). • Monitor construction pore pressures in fill and

foundation settlement. Also refer monitoring requirements elsewhere.

1 test set per 200m³ with a minimum of 5 tests for each area worked each day.

F/1 Subgrade cut and fill – construction.

Consultant’s Hold Point - subgrade Subgrade fill as for structural fill – construction.

As for structural fill – construction.

Scala penetrometer inferred CBR to 1.5m depth. 1 test per 100m² of prepared subgrade on each lift in top 1.0m of the earthworks.

Laboratory 4 day soaked CBR on undisturbed samples (fine grained subgrade materials).

1 test per 3,000m2 on each lift in top 1.0m of the earthwork minimum of 1 test for each area worked each day.

Laboratory 4 day soaked CBR on samples re- compacted in the lab to field density (19mm down fraction of weathered greywacke subgrade materials).

1 test per 1,000m2 on each lift in top 1.0m of the earthwork.

Benkelman beam test. Subgrade: Two tests spread evenly across the formation every 10m; Granular Pavement Layers: Each lane both wheel tracks on each layer every 20m. (For expressway non- structural pavement areas, one test every 10m per side, with the lateral position of the test coinciding with the likely wheel track of maintenance vehicles).

Water content before spreading lime/cement. 1 test per 200m2 of prepared subgrade.

Lime/cement spread rate. 1 test per 500m².

Stabilised layer thickness. 1 test per 20m.

Surface shape. 1 test per 20m.




Non-structural fill (landscape fill, noise bunds and dump areas) – construction.

• Density (nuclear densometer). • Water content (laboratory). • Vane shear strength (Pilcon).

1 test per 500m³ with a min of 2 tests for each area worked each day.

Surcharge to structural fill. Consultant’s Hold Point: Monitoring and programme Settlement monitoring locations at each change of surcharge height and each change of geological profile (but not greater than 50m between locations). Records to include date, level, weather and construction activity.

Weekly.

2. PAVEMENT LAYERS

M/3, NZTA M/4 Specification for unbound subbase and basecourse: source rock tests.

Consultant’s Hold Point • NZS 4407, Test 3.10, The Crushing

Resistance Test • NZS 4407, Test 3.11 Weathering Quality

Index Test • NZS 4407, Test 3.15 The California Bearing

Ratio Test (without a surcharge for at least 4 days).

2 tests per source 4 weeks before use in the works – not less 2 years old. Then 1 test per 10,000m3 If the aggregate source or processing method is changed then the source properties shall be tested immediately, and the Consultant informed. Acceptance of basecourse aggregate from the varied process shall be at the discretion of the engineer until the source properties are shown by test to comply with this specification.

Specification for unbound subbase and basecourse: production tests.

• NZS 4407, Test 3.6 Sand Equivalent Test • NZS 4407, Test 3.5 Clay Index Test. • NZS 4407, Test 3.4 Plasticity Index Test • NZS 4407, Test 3.14 Broken Face Test • NZS 4407, Test 3.8.1 Wet Sieving Test Table 4 basecourses refer Specification.

Stockpile size: • 0 to 400m³ - 2 tests • 400 to 1,500m³ - 3 tests • 1,500 to 4,000m³ - 4 tests • >4,000m³ - 1 test for each additional 1,000m³




T/19 Procedures for design and indirect tensile strength testing of modified and bound pavement materials.

Mix Design Report. Every modified or bound Mix Design used in B/5, B/6, B7 or B/9.

B/2 Unbound sub-base and basecourse construction.

Dimensional tolerances, uniformity, contamination and segregation.

Continuous monitoring.

NZS 4402, Test 4.1.3 to determine the maximum laboratory dry density at the optimum water content (OWC) of the aggregate used. The solid density of the aggregate tested shall be determined according to NZS 4407, Test 3.7.

1 test every stockpile or 1 test every 5,000m³ (in place) whichever is lesser.

Plateau density tests per the Transport Agency’s Specification B/2.

1 test every stockpile or 1 test every 5,000m³ (in place) whichever is lesser.

Pavement layer compaction per the Transport Agency’s Specification B/2.

5 tests per 1,000m2.

Layer thickness. 1 test per 20m.

Basecourse degree of saturation. 5 tests per 1,000m2.

Running course quality. Per Material.

Consultant’s Hold Point Basecourse surface preparation.

Pre-sealing inspection.

B/5 Insitu modified subbase and basecourse.



Stabilising agents. Lime shall comply with TNZ M/15. Refer M/15.

Cement shall comply with NZS 3122 Specification for Portland and blended cements (general and special purpose) for: • General purpose Portland cement – Type GP • General purpose blended cement – Type GB • Special purpose low heat cement – Type LH

Every Batch – not more than 3 months old.




Foamed bitumen Foamed bitumen shall be produced from 80/100 or 180/200 penetration grade bitumen as specified in the Project Specifications. The bitumen shall comply with TNZ M/1 and shall be able to achieve a minimum expansion of 10 times its original volume and a minimum half-life of 6 seconds.

Every tanker load.

Water from sources other than public supply needs to have its suitability established.

As required.

Supply of stabilising agents. Certificate of loading that contains the following information and shall be part of the project QMP: • Tanker’s identification details including

certification number; • Product identification; • Name of the supplier; • Batch number and date of manufacture (if

possible); • Date, time and place of loading; • Comments on the state of the tanker at the

time of loading in terms of cleanliness, details of the previous load carried, and whether any residual product from the previous load remains;

• Details of any chemical or other substance added to the product before, during or after the loading procedure, if any; and,

• Net weight of product before and after discharge into the mechanical spreaders.

Each load.

Plant for spreading chemical stabilising agents.

Consultant’s Hold Point Meets requirements of specification.

As required.

Plant for stabilisation (mixing process).

Consultant’s Hold Point Meets requirements of specification.

As required.

Weather limitations. Meets requirements of specification. Per production lot.

Time limitations. Meets requirements of specification. Per production lot.




Surface preparation. Meets requirements of specification. Per production lot.

Production plan. Meets requirements of specification. Per production lot

Supply of aggregate to site. Project requirements (generally M/4 based), dimensional tolerances, uniformity, contamination and segregation.

Project requirements (generally M/4 based) and continuous monitoring.

Spreading of lime and/or cement. Mat tests. Every 400 m2.

Average usage test: Compare tons used (from delivery docket) with measured area.

Upon emptying the spreader and bulk tanker.

Slaking of burnt lime. Slaking shall continue until no further reaction with additional water is visible and the slaked lime is completely converted to powdered form.

Inspection as required.

Addition of bituminous stabilising agents.

Flow meter and operator’s display readings. Continuous by operator and ground person.

Microprocessor’s reading: compare tons used (from hoe’s processor) with calculated area.

At the end of each run.

Average usage/use test: compare tons used (from delivery docket) with measured area.

Upon emptying the bulk tanker.

Temperature limits for storage and application of bitumen.

Meets requirements of specification. Continuous monitoring.

Addition of water. Meets requirements of spec - Nuclear Density Meter testing.


Control of cut depth. Inspection. Each side of drum - every 200m.

Overlap on longitudinal joints. Meets requirements of specification. Continuous monitoring.

Continuity of stabilised layer. Meets requirements of specification. At the end of each run.

Particle size distribution of stabilised material.

Inspection. First 20m of each run.

Compaction. NZS 4402: test 4.1.3 to determine the optimum water content and likely maximum dry density

Minimum frequency of one OWC/MDD test per 5000 m2 of material stabilised. If the aggregate source (if




targets for the expected stabilisation mixes which include the stabilising agent(s). In addition, the solid density of the representative stabilised material shall be determined according to NZS 4407: test 3.7.1.

applicable), the processing method, or the stabilised materials are expected to change then a new OWC and target MDD shall be determined and the Consultant informed.

Plateau density tests for the purpose of determining the minimum, and possibly the maximum, number of roller passes required to achieve the maximum possible target dry density (MDD).

Repeated plateau density tests shall be undertaken when the material changes visibly.

Pavement layer compaction.

The area of a lot shall not exceed 1000 m2. The degree of compaction for each lot shall be determined by testing at least five randomly selected areas.

Control testing during and after construction.

Indirect tensile strength (ITS) of the mixed material according to NZTA T/19.

The contractor shall take a pair of representative samples behind the mixing plant per lot or at a minimum of 2 pairs of representative samples per day. The area of a lot shall not exceed 5000 m2 or 250 linear meters of roadway whichever is the least.

Pre-sealing requirements. Basecourse Degree of Saturation 5 tests per 1,000m2

Running Course Quality Per material.

Consultant’s Hold Point Basecourse Surface Preparation

Pre-sealing inspection.

B/6 Insitu bound subbase and basecourse.

B/5 requirements and the following: Refer B/6.



Pre-cracking protection, curing and maintenance before overlaying. Mixed material testing.

Inspection. Per production lot.

Inspection. Per production lot.

Indirect tensile strength (ITS) of the mixed material according to NZTA T/19.

The contractor shall take a pair of representative samples behind the mixing plant per lot or at a minimum of 2 pairs of representative samples per day. The area




of a lot shall not exceed 5000 m2 or 250 linear meters of roadway whichever is the least.

B/7 Plant mixed modified subbase and basecourse.



B/5 requirements and the following: Refer B/7.

Plant for batching and mixing. Consultant’s Hold Point Meets requirements of specification.

As required.

Loading, transportation and discharge.

Meets requirements of specification. Continuous monitoring.

B/8 Plant mixed bound subbase. B/6 and B/7 requirements. Refer B/8.

Hi-Lab (The Hi-Lab specification is under development)

Waka Kotahi NZ Transport Agency’s Hi-Lab specification.

Pavement designs are client lead and where Hi-Lab construction methodology is required, Waka Kotahi will provide the detail design report and specifications, including inspection and testing requirements.

Testing to be carried out as agreed for the specific project.

T/1 Benkelman Beam tests. Construction checks on deflection.

Pavement Layers: Each lane both design wheel paths on each layer every 20m. (For non- traffic lane related pavement areas, one test every 100m2 per side, with the lateral position of the test coinciding with the likely wheel track of vehicles using area).

3. PAVEMENT SURFACING

NZTA M01 Specification for roading bitumen. All tests in M01 Table 6.1. Every refinery shipment.

ASTM D5 penetration. Every 200,000 litres supplied.

NZTA M01-A Specification for performance-graded asphalt binder.

AASHTO T44 or ASTM D2042 solubility. Every refinery batch or import shipment. AASHTO T48 or ASTM D92 flash point.

AASHTO T316 or ASTM D4402 viscosity.




AASHTO T315 or ASTM D7175 DSR testing. Every refinery batch or import shipment or bulk delivery to port terminal.

AASHTO T240 or ASTM D2872 RTFOT.

AASHTO T350 or ASTM D7405 MSCR.

CCNZ BPG04 QA for Bituminous Binders Every 200,000 litres.

NZTA M06 Specification for sealing chip: source rock tests.

NZS 4407 Test 3.10 crushing resistance. Every 10,000 m³.

NZS 4407 Test 3.11 weathering resistance.

Specification for sealing chip: production properties.

NZS 4407 Test 3.9 cleanness value (G2 – G6). Every 500 m³.

NZS 4407 Test 3.13 size and shape (G2 – G5).

NZS 4407 Test 3.14 broken faces (G2 – G5).

NZS 4407 Test 3.8.2 PSD (G5 – G6).

NZTA P03 Specification for first coat sealing. NZTA T09 Estimation of the kerosene content. One sample each sprayer load.

NZTA P04 Specification for resealing. NZTA T09 Estimation of the kerosene content. One sample each sprayer load.

NZTA P17 Performance-based specification for reseals.

As per P17 Table 2. Per site.

NZTA M10 Specification for dense-graded asphaltic concrete.

CCNZ BPG05 QA for Aggregates As per BPG05.

Consultant’s Hold Point Mix design currency.

Six months or as per M10 clause 3.6.4.

RAP Binder content and particle size distribution. Every 600 tonnes.

Asphalt particle size distribution. Every 200 tonnes (but see M10 5.2).

Asphalt binder content.

Asphalt maximum theoretical SG. Every 600 tonnes (but see M10 5.2).

Asphalt air voids.

Consultant’s Hold Point




• Identification of random core locations. • Core height and air voids.

1 core/300 m² per lot, 8 mat, 3 joints minimum.

NZTA M27 Specification for stone mastic asphalt.

CCNZ BPG05 QA for Aggregates As per BPG05.

Mix design currency (PA HP). Six months or as per M27 clause 3.6.4.

SMA particle size distribution. Every 200 tonnes (but see M27 5.2).

SMA binder content.

SMA maximum theoretical SG. Every 600 tonnes (but see M27 5.2).

SMA air voids.

Consultant’s Hold Point Identification of random core locations. Core height and air voids.

1 core/300 m² per lot, 8 mat, 3 joints minimum.

NZTA P11, P11E

Specification for open-graded porous asphalt.

Consultant’s Hold Point Mix design approval.

Coarse aggregate crushing resistance. Not specified.

Coarse aggregate weathering resistance. Not specified.

Coarse aggregate particle shape. Not specified.

Coarse aggregate broken faces. Not specified.

Fine aggregate crushing resistance. Not specified.

OGPA particle size distribution. Every 200 tonnes.

OGPA binder content. Every 200 tonnes.

P40 Specification for noise mitigation. Visual inspection of low-noise road surfacing to confirm the type and extent of surfacing is in accordance with the final Noise Mitigation Plan and that no defect that may cause noise are present.

All low-noise road surfaces.




Close-proximity road surface noise measurements in accordance with the NZ Transport Agency Close proximity (CPX) road surface noise measurement trailer guide.

All low-noise road surfaces (when more than 5 lane km of low-noise road surfaces are installed as part of a project).

4. LANDSCAPE TREATMENTS

P/39 • Site preparation, setout, vegetation protection & vegetation clearance.

• Biosecurity control (for planting).

• Sub soil & topsoil review and testing.

• Landscape contouring. • Mulch review and testing. • Weed mat review. • Plant selection, procurement

and supply* (including for specimen trees).

• All landscape planting, grassing and hydroseeding.

• Maintenance. *Note: Eco-sourced plant requirements and monitoring.

• Soil test. • Mulch quality sample review. • Product sampling and review. • Sample area and plot assessments. • Defects & Maintenance inspections.

Hold points shall be at each ‘stage of contract’ for the landscape works to align with the Inspection Requirements, and quality control checks as specified within P/39. The role of the project Landscape Architect (and other advisors to the landscape construction e.g. ecologist) shall be included in the project’s inspection and test plan (ITP).

See P39 specification for Highway Landscape Treatments for details on performance criteria. Note: sampling is subject to the size of the planting area.

5. GEOTEXTILES

F/7 Geotextile – materials. Manufacturers compliance certificate. Check each lot (1 roll).

Geotextile – construction. Checklist for directional placement, tensioning laps, spacing, damage.

1 check per 100m² of material placed with a minimum of 3 tests for area covered per day.

Vertical drains (wick) – materials. Manufacturers compliance certificate. Check each lot (1 roll).

Vertical drains (wick) – construction.

Checklist for location, spacing and damage. 1 check per 100m² area treated.




F/2, F/6 Subsurface drainage.

Subsurface drain aggregate – materials.

Consultant’s Hold Point: material Geological rock type, weathering, crushing, sand equivalent.

2 tests per material source

Particle size distribution. 1 test per 100m³

F/2, F/5 Subsurface pipes – materials. Manufacturers compliance certificate. Check each lot (1 roll)

F/2, F/5, F/6 Subsurface drain – construction. • Location. • Plateau density correlated with relative

density (nuclear densometer).

1 test per 100m of subsurface drain constructed with a minimum of 3 tests for each drain completed.

Subsurface drain (bored drains) – construction.

Consultant’s Hold Point: form and installation method • Location. • Drain assembly. • Installed length. • Log borehole excavation.

1 record per drain. 1 log per 10 drains by an engineering geologist.

Subsurface pipes – construction. Location, gradient, damage, outlet. 1 check per drain.

6. GEOSYNTHETIC SOIL REINFORCEMENT

Bridge Manual v3.3, Section 6.8

Geosynthetic soil reinforcement – materials and supplier.

Consultant’s Hold Point: approval Approval for material and supplier

Each product and type

Geosynthetic soil reinforcement – materials.

Manufacturers compliance certificate Check each lot (1 roll).

Geosynthetic soil reinforcement – construction.

Checklist for directional placement, tensioning laps, spacing, damage.

1 check per 100m² of material placed with a minimum of 3 tests for area covered per day.

7. STONE COLUMNS

Stone columns – materials. Geological rock type, weathering and crushing resistance.

2 tests per source 4 weeks before use in the works




Sand equivalent, particle size distribution. Stock size: • 0 to 400m³ - 2 tests • 400 to 1,500m³ - 3 tests • 1,500 to 4,000m³ - 4 tests • >4,000m³ - 1 test for each additional 1,000m³

Stone columns – construction. Load tests instrumented with settlement tube and surface displacement markers.

1 test with kentledge load

Dynamic cone penetration tests. 1 test per 100m² located in natural ground equidistant from adjacent columns.

Location. 1 test per 10m²

8. WALLS

AS 2159:2009 Mechanically stabilized earth walls and slopes. Walls on strip footing walls.

Consultant’s Hold Point: foundation Visual inspection.

Each section of foundation prepared prior to concreting.

Dynamic Cone Penetration to 3m. Vane shear strength (Pilcon).

1 test per 10m run of wall.

BS8081-1989, Section 11.2

Pile walls. Proof drilling, SPTs at 1.5m centers, core recovery between SPTs.

1 drill hole per 100m run of wall

Log material excavated. 1 log per pile excavation by an engineering geologist.

Pile record including pile co-ordinates, top and base RL (m), nominal diameter, volume of concrete/m of excavation, rebar cage support and displacement

1 record per pile

Tie-back pile walls. As for pile walls.

Pile base clean out inspection, and base proving. 1 inspection per 100m run of wall (if hole is cased and of sufficient diameter).

• Pile location. • Anchor assembly. • Log anchor excavation.

1 check per pile and each anchor, logged by an engineering geologist.




Proof load anchors BS 8081. 20% of anchors.

P40 Specification for noise mitigation. Visual inspection of noise barriers (walls and bunds) to confirm the type, material, height and extent of barrier is in accordance with the final Noise Mitigation Plan.

All noise barriers.

Manufacturer’s or supplier’s test of sound insulation rating of noise walls EN 1793-2: 2012 Road traffic noise reducing devices - Test method for determining the acoustic performance. Part 2: Intrinsic characteristics of airborne sound insulation under diffuse sound field conditions. In-situ test of sound insulation rating of noise walls EN 1793-6: 2012 Road traffic noise reducing devices - Test method for determining the acoustic performance. Part 6: Intrinsic characteristics – In situ values of airborne sound insulation under direct sound field conditions.

Representative noise wall(s) of each material type, which are 2m or greater in height.

9. FOUNDATIONS

AS 1141, AS 1289, AS 4133

Bored pile foundations – materials. Consultant’s Hold Point: casing material and supply Casing material and fabrication Suppliers certificate.

Each casing.

Bored pile foundations – construction.

Log material excavated and observations of groundwater.

1 log per pile excavation by an engineering geologist.

Pile base clean out inspection, and base proving. 1 inspection for each pile.

Pile record including pile co-ordinates, top and base RL (m), verticality, nominal diameter, volume of concrete/m of excavation, rebar cage support and displacement.

1 record per pile.

Driven piles – construction. Pile driving record including pile co-ordinates, top and base RL (m), verticality, hammer weight, drop

1 record per pile.




& efficiency, set, calculations for minimum depth and pile capacity.

The capacity of at least 15% of piles shall be tested using a pile driving analyzer (PDA). PDA data shall be correlated with foundation type, ground conditions and pile driving records.

1 record for each pile tested.

10. TRAFFIC SERVICES

P/24, M/25

Signs. • Test requirements for all signs shall be in accordance with the Transport Agency’s Manual of Traffic Signs and Markings Part 1 and Part III and/or Traffic Control Devices Manual and presence of retro-reflective sheeting manufacturer’s warranty stickers.

• Test requirements for retro-reflective materials shall be compliance certificates from recognized testing laboratories.

• Test requirements for overhead sign supports shall be in accordance with the Transport Agency’s Bridge Manual.

M23 Road Safety Barrier Systems. Consultant’s Hold Point All road safety barrier systems (including end treatments and crash cushions):

• System checklists to be completed and co-signed by qualified contractor (who has completed the Waka Kotahi IMI workshop) and Waka Kotahi representative.

Note: All faults to be rectified before acceptance into network operations (maintenance manual) and network assets register (and RAMM).




M23 and System Installation / Maintenance Manual

Wire Rope Safety Barrier (WRSB) Systems: • Pull over testing for all foundation types to be

carried out in accordance with System Owner’s instructions and Waka Kotahi Specification M23 requirements.

M23 Appendix D Slip Formed Concrete Barriers.

Clause 9.4.2 of NZS 3109

Slump test. One per batch of concrete and when compression test samples are taken. Batching and discharge times for each truck.

Clause 9.5.6 of NZS3109

Compression test. The greater of; a) One set of test specimens for each day of pouring. b) One set of test specimens for every 25m3 poured. In addition, one set of test specimens shall be taken; a) if water is added to the mix in accordance with

clause 9.4.2.1 of NZS3109 or, b) if the concrete mix or concrete manufacturer is

changed.

Clause 3.8.2 of NZS3109

Cover. Every bar within every pour.

Clause B6 and B7 of AS/NZS 4671

Reinforcing steel. At commencement of construction and whenever reinforcing bar is sourced from a different manufacturer.




M/07: 2009 Roadmarking Paints On Road Performance Tests, either: 1. Transverse Field Trial, OR 2. In-situ Trial

a. Degree of Wear b. Luminance c. Retro reflectivity d. Colour e. Skid Resistance

1. Transverse Field Trial 24 to 48 hours after application, two additional tests for skid resistance.

Luminance as per Appendix H of M/20. 2. In-situ Trial

a. One test per 200m section. b. One test per 200m section. c. Average of 8 mean readings per 200m

monitoring sites. d. One test per 200m section. e. One test within each of two 5m spots per

200m section.

Laboratory Performance Tests 1. Colour 2. Specular Gloss 3. Resistance to Bleeding 4. Dry Time (No Pickup) 5. Dry Time (Early Washout)

1. Paint coated and dried as per AS 4049.1 Appendix C, Assessed as per AS/NZS 1580.601.1

2. Paint coated and dried as per AS 4049.1 Appendix C, Assessed as per AS/NZS 1580.602.2

3. Paint coated and dried as per AS 4049.1 Appendix E, discoloration to be no less than 4 on the grey scale of ISO 105-A03

4. In accordance with AS/NZS 1580.401.8 5. Test as per Appendix D of TNZ M/07:2009

Application Properties 1. Condition in the Container 2. Residue on Sieve 3. Consistency

1. Visual examination after delivery 2. 1 x 250ml sample per supply 3. Refer AS/NZS 1580.214.1

Quality Control Tests: 1. Specific Gravity 2. Consistency 3. Fineness of Grind 4. Colour 5. Luminance 6. Non-volatile content by Mass

1. As per AS/NZS 1580.202.1 (or 202.2). 2. As per AS/NZS 1580.214.1. 3. As per AS/NZS 1580.201.1. 4. Paint coated and dried as per AS 4049.1

Appendix C, Assessed as per AS/NZS 1580.601.1.

5. Test as per Appendix H of TNZ M/20.




6. As per AS 1580.301.1.

M/12: 2007 Raised Pavement Markers 12-month field trial – Reflectivity. Install 50 markers, after 12 months test reflectivity of random sample of 30 markers as per AS 1906.3 (1992). Results to be in accordance with clause 3.2.3 of M/12.

M/14 Edge marker posts 1. Deflection 2. Resistance to vehicle run over 3. Safety to road users 4. Cold resistance

1. 3 new posts tested as per Appendix C of M/14. 2. 3 new posts impacted 10 times plus 3 new posts

impacted 5 times as per Appendix D of M/14. 3. Same as #2 4. 3 new posts to be bent as per Appendix E of

M/12.

M/20: 2003 Long Life Roadmarking Materials Field Tests (Appendix B of M/20) 1. Skid resistance 2. Retro reflectivity 3. Degree of wear 4. Colour & colour retention

Assessments made: • 1 hour after application • After 1 million vehicle passes • After 2 million vehicle passes

M/24: 2006 Audio Tactile Profiled Road markings

1. Placement 2. Dimensional tolerances 3. Skid resistance 4. Retro reflectivity

Visual inspection: • Upon installation • After 14 days • After 30 days

P/12: 2000 Pavement markings (Non-SH) Skid resistance. Within one hour of application

P/14: 1995 Raised Pavement Markers Installation

No tests specified.

P/16: 2011 Edge Marker posts installation No tests specified.

P/22: 2006 Reflectorised Pavement Marking Retro reflectivity. After 1 month but before 2 months after application.

Skid Resistance between one hour and one week after application.

P/28: 2006 Maintenance and Installation of Inductive Loops at Traffic Monitoring Sites

1. Loop inductance. 2. Max. Loop resistance. 3. Min. Loop resistance to ground.

Testing as per AS 2703:1987 prior to sealing.




P/30: 2009 High Performance Road marking Retro reflectivity (approved monitoring sites only)

As per retro reflectivity test of M/20.

P/33: 2017 Coloured pavement surfacing Performance based tests for warranty period (5 years): 1. Skid Resistance 2. Macrotexture 3. Visual performance 4. Colour

1. SCRIM, T/10 or British Pendulum Test (BPT). 2. As per NZTA T/10. 3. Visual assessment. 4. Discolouration of no less than 4 using ISO 105-

A02:1993 or ISO-A03:1993.

T/08: 2008 Roadmarking Applicator Testing Multiple competency tests required for certification as per section 12 of T/8.

T/10: 2013 State Highway Skid Resistance Verification of the source aggregate for the polish stone value using BTP and verification of on road performance.

1. Annual survey of network. 2. Sample to be tested in accordance with the

British Pendulum Test. 3. Frequency of testing should in accordance to the

T/10 Notes.

T/12: 2013 Long-Life Pavement Marking Material Applicator Testing

Multiple competency tests required for certification as per section 12 of T/12.

T/16: 2009 Determination of Retro reflectivity

1. Dry testing – Flat surfaces 2. Dry testing – ATP markings 3. Wet testing – Flat surfaces 4. Wet testing – ATP markings

1. Sufficient locations to characterize each site. 2. Three readings per block at Sufficient locations to

characterize each site. 3. Sufficient locations to characterize each site. 4. Three readings per block at sufficient locations to

characterize each site.

T/18: 2011 Specification for Road marking Raised Pavement Marker (RPM) Adhesive Heater and Thermoplastic Pre-Heater.

Multiple competency tests required for certification as per section 12 of T/18.




11. LIGHTING

M/26, M/30 Test Loadings. Frangible Base testing – only manufacturers whose designs have been approved by Waka Kotahi NZ Transport Agency will be accepted.

Electrical work. All tests and certification procedures as defined by Electrical Code of Practice ECP 11, and Section 6 of AS/NZS 3000 – Wiring Rules and which shall include: • Visual and functional test Earth continuity tests

Bonding test. • Earthing test. • Insulation resistance test. • Polarity test. • Earth loop impedance. • Buried cable depth and alignment.

M/31 Specification for Road and Public Area Lighting Controls.

12. CONCRETE

NZS 3104, NZS 3109 Austroads ATS-5343 NZS 3101 NZTA S10 (anti-graffiti) NZS 3112 Parts 1 & 2

Structural concrete work. All test and certification procedures required by Technical specifications, NZS 3101 as modified by Waka Kotahi NZ Transport Agency’s Bridge Manual and the references nominated by both documents for structural concrete, including: • Materials and admixtures. • Testing and grading of aggregate. • Production. • Slump test • Compressive strength testing in accordance

with specification.

• As required by the Technical specifications and Standards.

• Concrete cylinders for compression testing to be sampled on site.

• 3 cylinders every pour for structural concrete and every 75m3 thereafter (NZS 3112 Parts 1 & 2).

• Compressive strength testing in accordance with specification, likely to include 7 & 28 day samples.




• Construction finishing testing. • Batching and discharging times.

AS/NZS 4671, NZS 3109, Austroads ATS-5310, AS/NZS 4672, NZS 3109, NZTA Bridge manual, NZS 3101, ISO 15835, ISO 15698, AS/NZS 1314

Reinforcing and pre-stressing steel.

All test and certification procedures required by NZS 3101, AS/NZS 4671, and AS/NZS 4672 as modified by Waka Kotahi NZ Transport Agency’s Bridge Manual and the references nominated by these documents for conventional and prestress reinforcement.

As required by the Technical specifications and Standards.

13. STEELWORK

NZS 3404, AS/NZS 5131, AS/NZS 1554, AS/NZS 2312, NZTA S9, NZTA S10, NZTA Bridge manual, Austroads ATS-5820 Austroads ATS-5420

Structural steelwork. All test and certification procedures required by Technical specifications, NZS 3404 as modified by Waka Kotahi NZ Transport Agency’s Bridge Manual and the references nominated by both documents for structural steelwork, including associated bolting and welding requirements: • Materials Fabrication Erection. • Finishing (for each specific finish system

proposed). • Non-destructive testing e.g. welds, fracture

toughness

As required by the Standards and Specifications.




AS5100.4, NZTA Bridge Manual AS 1683, AS 1523, AS 1180.3, AS 1180.7F, AS 1449, AS/NZS 1554, AS 1683.15, AS 1683.13B, AS/NZS 3679 ATS 5350 ATS 5380

Bridge bearings and movement joints.

All test and certification procedures required by Technical specifications, AS 5100.4 as modified by Waka Kotahi NZ Transport Agency’s Bridge Manual and the references nominated by both documents for the specific bridge bearing and movement joint systems proposed for the project, including: • Materials provision and testing fabrication. • Testing of fabricated assemblies. • Installation. • Waterproofing. • FRP strengthening. • 10-year warranty

As required by the Standards and designers.

14. DRAINAGE, CHANNELS, NIBS & INCIDENTAL WORKS

NZS 3101

Kerbs, channels, nibs, and other concrete elements.

All test and certification procedures required by NZS 3101.

As required by the standards and designer’s specification. Concrete cylinders for compression testing to be sampled on site. Three (3) cylinders every pour for structural concrete and every 75m3 thereafter.

NZTA Stormwater Treatment Standard or Auckland Council GD01 or other regional guidance.

Proprietary stormwater treatment devices.

As specified by manufacturer and/or consenting authority.

As specified by manufacturer and/or consenting authority.

15. MANHOLES, CATCHPITS, INLET AND OUTLET STRUCTURES

Subgrade. Handheld Shear Vane, Scala Penetrometer CBR, or Clegg Hammer.

Minimum of 1 test per element or as required by the designer.

Backfill around structures. Percentage of Maximum Dry Density (%MDD) using Nuclear Densometer. Clegg Hammer Impact Values may be used to determine the in-situ %MDD based on a correlation between Clegg Hammer Impact Value

Minimum of 1 test per element or as required by the designer.




and %MDD as determined from prior laboratory testing or field trials and as accepted by the Designer.

Manholes. Water tightness testing. As required by designer.

16. CULVERTS, PIPES

F/3 NZS 4058 NZS 2566.1 NZS 2041 NZS 4406 Austroads ATS-2230 Austroads ATS-2210 Supplier specs

Pipes or culvert. As specified by relevant standard. As specified by relevant standard.

F/3 NZS 3725 NZS 4402 NZS 2566.2

Granular pipe bedding, haunch and size zone material.

• Grading curves. • Maximum and minimum dry density. • Minimum crushing resistance of 130kN and a

weathering quality index of AA, AB, AC, BA, BB or CA.

Every 200m³ (truck measure) of material delivered to site and submitted to the Designer for approval for every source.

F/3 NZS 4402 NZS 3725 NZS 2566.2 NZS 3101

CLSM pipe bedding (flowable fill). Compression testing. 3 cylinders every pour and every 75m3 thereafter.

F/3 NZS 4402 NZ Geotechnical Society Inc. “Guideline for handheld shear vane”, 2001

Trench excavation. Handheld Shear Vane, Scala Penetrometer CBR, or Clegg Hammer.

As required by the designers.

F/3 Pipe bedding. Density Index using Nuclear Densometer. Minimum of one test on both sides of the pipe for every 10m of pipe laid.




NZS 3725 NZS 2566.2

Haunch and side zone. Clegg Hammer Impact Values may be used to determine the in-situ density index based on a correlation between Clegg Hammer Impact Value and density index as determined from prior laboratory testing or field trials and as accepted by the designer.

Minimum of one test per haunch and one test per side zone, on both sides of the pipe for every 10m of pipe laid. Additional testing for large diameter culverts with multiple haunch and side zone layers may be required by the designer.

Overlay (normally to height 150mm above pipe).

Under pavement, a minimum of one test for every 10m of pipe laid.

F/3 Concrete Pipe Association of Australasia: Field Testing of Concrete Pipelines and Joints Section 1.

Pipes. Pressure testing. Where specified by the designer.

Note: All source documents are subject to review and update. The testing and quality requirements of the source document takes precedence over the tests and

frequencies listed above. The list above does not override or supersede any requirements of the source document specifications. The reader is strongly advised to obtain copies of the current version of the source documents to ensure all quality requirements are understood and complied with. Refer to Waka Kotahi web site for the latest versions of all specifications.

minimum standard for inspection, sampling and testing

Documents