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Technical advice note

The Transport Services Technical advice note (TAN) is a formal memo which keeps all relevant people up to date and aware of any new releases, interim acceptances, changes and updates to technical information, specifications, legislation, etc in relation to highway projects.

This is being used in place of the email memos you may have been receiving from the technical teams across the Transport Services group.

The Technical advice note series should be seen as the one source of truth associated with changes to our technical requirements.

It is sent to registered users, both internal and external to Waka Kotahi NZ Transport Agency.

Subscribe(external link) to receive Technical advice note memos – the one source of truth for highways information.

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For further information contact standards@nzta.govt.nz

#17-08 Modification to sealing using melter aggregate chip seals

Published: | Category: Technical advice note | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors | Author: Highways and Network Operations

This technical advice note outlines modifications to sealing practice when using melter aggregate. This technical advice is superseded by #19-08 Release of the new M6 specification for sealing chip.  

 

#17-07 Update to Protective coatings for steel bridges: a guide for bridge and maintenance engineers

Published: | Category: Technical advice note | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors | Author: Highways and Network Operations

The Protective coatings for steel bridges guide provides a summary of information to assist the bridge designer with the specification of a cost effective performance based corrosion protection system.

#17-05 SM021 Contract procedures manual update

Published: | Category: Technical advice note | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors | Author: Highways and Network Operations

The Contract procedures manual has been updated to reflect changes to the Highways and Network Operations’ (HNO) contract procedures (part A).  

#17-06 Coastal effects assessment guideline released

Published: | Category: Technical advice note | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors | Author: Highways and Network Operations

The Transport Agency has developed the Coastal affects assessment guideline in response to the Agency’s focus on long-term climate change impacts, such as sea level rise, increased inundation, and various environmental effects to ensure resilience of the New Zealand highway network.

#17-04 Business case approach phase 2 learning system, point of entry, now available

Published: | Category: Technical advice note | Audiences: Local & regional government, Road controlling authorities, Road traffic engineers & consultants, Roading contractors | Author: NZ Transport Agency

Following on from the successful uptake of the NZ Transport Agency Learning Management System module covering the Business Case Approach (BCA) phase 1 (introductory modules) we can advise that development of phase 2 for BCA has started.  

#17-03 Use of traffic speed deflectometer results

Published: | Category: Technical advice note | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors | Author: Highways and Network Operations

This technical advice note details the methodology to convert the traffic speed deflectometer (TSD) data to the more familiar falling weight deflectometer (FWD) output, enabling any TSD data collected to be directly compared to any historically collected FWD dataset.

#17-02 New Multi criteria analysis for transport business cases guidelines for consultation

Published: | Category: Technical advice note | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors | Author: Highways and Network Operations

A new document has been released for consultation with users/stakeholders to gain feedback on the Multi criteria analysis for transport business cases guidelines.  

#17-01 Asphalt depths at high stress locations for new pavements and renewals

Published: | Category: Technical advice note | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors | Author: Highways and Network Operations

The Austroads Guide to pavement technology part 2: pavement structural design and the associated New Zealand supplement (Transit 2007) are used to design pavements in New Zealand. These documents consider the effect of vertical stresses at the pavement surface, and the impact on the tensile strains at the bottom bound layers (asphalt or cemented materials) and compressive strains at the subgrade level.

#16-19 Business case approach online modules

Published: | Category: Technical advice note | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors | Author: NZ Transport Agency

Update on the status of the NZ Transport Agency’s Business case approach capability programme.

#16-18 Wire Rope Safety Barrier systems – post footing issues (updated Dec 2016)

Published: | Category: Technical advice note | Audiences: Road controlling authorities, Road traffic engineers & consultants, Roading contractors | Author: Highways and Network Operations

Wire Rope Safety Barrier systems – post footing issues (updated December 2016)
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