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Acceptable Solution B2/AS1: Durability provisions for building elements

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Abbreviation
B2/AS1 (Third edition)
Version
Third edition
Valid from
28/07/2025
Information provider
Ministry of Business, Innovation and Employment,
Information type
Acceptable Solution,
Format
PDF,
Cites
This resource cites 10 documents (show Citations)
Description

B2 Durability Acceptable Solution B2/AS1 Third Edition outlines how to meet the durability requirements of Clause B2 of the New Zealand Building Code for building elements.

It provides guidance on determining required durability periods (5, 15, or 50 years) based on accessibility, detectability of failure, and structural importance.

The document includes detailed tables assigning durability periods to various building components and systems.

It also references the Building Product Specifications. The third edition also has revised layout, updated references, and expanded definitions.

Scope

The acceptable solution B2/AS1 applies to materials and components required to satisfy the performances specified in other clauses of the Building Code. applies to materials and components required to satisfy the performances specified in other clauses of the Building Code.

Items outside the scope of this document:

  • In special circumstances and where building elements are called up but are used outside the scope of the application in the acceptable solution or verification method, durability shall be verified by using Verification Method B2/VM1.
Previous versions:
B2/AS1 (Amd 12) (Second Edition, Amendment 12)
B2/AS1 (Amd 11) (Second Edition, Amendment 11)
B2/AS1 (Amd 10) (Second Edition, Amendment 10)
B2/AS1 (Amd 9) (Second edition, Amendment 9)
B2/AS1 (Amd 8) (Second edition, Amendment 8)
B2/AS1 (Amd 7) (Second edition, Amendment 7)
For assistance with locating previous versions, please contact the information provider.
Notes/comments

This acceptable solution is the third edition of B2/AS1. The main changes from the previous version are:

  • The document has been published in a standalone format and the layout has been revised to improve clarity.
  • Minor amendments have been made to correct typos, grammar, cross-references, punctuation, wording, and formatting of the document.
  • A title has been provided for the document to reflect the scope of acceptable solution. 
  • The acceptable solution now refers to the Building Product Specifications for timber treatment.
  • References have been revised to reflect the standards and other documents referenced in this acceptable solution. 
  • Definitions have been revised to reflect the terms used in this acceptable solution. 
View on Information Provider website Download this resource (PDF, 665KB)
For assistance with locating previous versions, please contact the information provider.

This acceptable solution is the third edition of B2/AS1. The main changes from the previous version are:

  • The document has been published in a standalone format and the layout has been revised to improve clarity.
  • Minor amendments have been made to correct typos, grammar, cross-references, punctuation, wording, and formatting of the document.
  • A title has been provided for the document to reflect the scope of acceptable solution. 
  • The acceptable solution now refers to the Building Product Specifications for timber treatment.
  • References have been revised to reflect the standards and other documents referenced in this acceptable solution. 
  • Definitions have been revised to reflect the terms used in this acceptable solution. 
This resource is not cited by any other resources.

Acceptable Solution B2/AS1: Durability provisions for building elements

This document is not CITED BY any other resources:

Acceptable Solution B2/AS1: Durability provisions for building elements

Description

B2 Durability Acceptable Solution B2/AS1 Third Edition outlines how to meet the durability requirements of Clause B2 of the New Zealand Building Code for building elements.

It provides guidance on determining required durability periods (5, 15, or 50 years) based on accessibility, detectability of failure, and structural importance.

The document includes detailed tables assigning durability periods to various building components and systems.

It also references the Building Product Specifications. The third edition also has revised layout, updated references, and expanded definitions.

View on Information Provider website Download this resource (PDF, 665KB)
Acceptable Solution B2/AS1: Durability provisions for building elements
Description

B2 Durability Acceptable Solution B2/AS1 Third Edition outlines how to meet the durability requirements of Clause B2 of the New Zealand Building Code for building elements.

It provides guidance on determining required durability periods (5, 15, or 50 years) based on accessibility, detectability of failure, and structural importance.

The document includes detailed tables assigning durability periods to various building components and systems.

It also references the Building Product Specifications. The third edition also has revised layout, updated references, and expanded definitions.

View on Information Provider website Download this resource (PDF, 665KB)
This resource cites:

Acceptable Solution B2/AS1: Durability provisions for building elements

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