Posted: 31 January 2017
Consultation on the amendments to the Acceptable Solutions and Verification Methods, as well as two new Acceptable Solutions, took place from 20 July to 31 August 2016. Ninety-two people submitted feedback on these proposals, which helped to refine and finalise the amendments. Two proposed Acceptable Solutions, E2/AS4 Torch-on Membrane Systems for Roofs and Decks and E3/AS2 Internal Wet Area Membranes, require further development and have not yet been published.
Update: Please note that on 1 February 2017 minor corrections were made to the details below on amendments to B1 Structure and C1-C6 Protection from fire.
The following describes which version of an Acceptable Solution or Verification Method to use when submitting a complete application for a building consent:
Until 31 December 2016: Use the existing version.
From 1 January to 30 May 2017*: Use either the existing version or the newly published version (during this transition period either version is an Acceptable Solution or Verification Method).
From 31 May 2017*: Use the newly published version (the existing version is no longer an Acceptable Solution or Verification Method).
* An exception is the transition period for D2/AS1. From 1 January 2017 to 6 August 2017 you can use either D2/AS1 Amendment 6 or Amendment 7 as an Acceptable Solution. From 7 August 2017 only D2/AS1 Amendment 7 can be used as an Acceptable Solution.
Summary of changes
A brief description of the changes to each Acceptable Solution or Verification Method is given below:
- B1 Structure: B1/AS1, B1/VM1, B1/VM4
NZS 4223 Parts 1 to 4 are updated to the latest versions in B1/AS1, and the structural glass barrier requirements in Part 3 are modified.
Clause 18.104.22.168 and Figures 7.10(b) and 7.10(c) in NZS 3604 are modified to clarify the requirements (in accordance with the latest test data).
The modification in B1/VM1 on applying the hazard factor Z, to buildings with structure periods less than 1.5 seconds in the Canterbury earthquake region, is deleted.
The modification in B1/VM1 on applying a minimum risk factor for the serviceability limit state of Rs = 0.33 in the Canterbury earthquake region is deleted.
Clause 22.214.171.124.13 in NZS 3101 is modified in B1/VM1 to limit the depth of precast units to 300 mm and the overall depth to 400 mm.
The formula in B1/VM4 paragraph 3.3.2b) is corrected.
- B2 Durability: B2/AS1
NZS 4223.2:2016 is cited as a means of compliance for the durability of insulating glass units (double glazing)
- C1-C6 Protection from fire: C/AS1 to C/AS7
Paragraph 1.1.2, C/AS2 to C/AS6: Clarification that an alternative solution or Verification Method can be used for buildings with complex features or specific fire engineering design.
Paragraph 2.3, C/AS1 to C/AS7: Scope limitations on Life rating and Property rating are removed.
Paragraph 3.4, C/AS1 only: NZS 4514 domestic smoke alarms can be used to extend travel distance in housing.
Paragraph 3.15.5, C/AS3 only: Door widths clarified.
Paragraph 4.1.3, C/AS7 only: Limitations on intermediate floors do not apply to car parks.
Paragraph 4.9.6, C/AS2 only: Paragraph removed as requirements are given in Paragraph 3.9.6.
Paragraph 4.16.12, C/AS3 and C/AS4: Location of smoke dampers clarified.
Paragraph 5.1.2, C/AS1 only: Requirement for notional boundary between buildings only applies where there is sleeping use.
Paragraph 5.5.7, C/AS2 to C/AS6: The tabulated method for calculating Unprotected Areas can be used.
Paragraph 5.8.3, C/AS2, C/AS4 to C/AS6: Removed dispensation from external cladding requirements for buildings sprinklered and less than 25m.
Appendix C, C/AS2 to C/AS6: Table added enabling Australian and European Standards to be used to determine Group Numbers.
- D1 Access routes: D1/AS1, D1/VM1
Section 2.1 on slip resistance of walking surfaces is revised and references AS 4586: 2013 ‘Slip resistance classification of new pedestrian surfaces’. Paragraph 1.2.1 includes a requirement for maximum vertical variations in flooring. BS EN 14975: 2006 ‘Loft ladders – Requirements, marking and testing’ is referenced as an acceptable solution. AS 1657: 2013 ‘Fixed platforms, walkways, stairways and ladders – Design, construction and installation’ replaces an earlier version. Minor changes and corrections are made throughout the text for clarity.
- D2 Mechanical Installations for Access: D2/AS1
The lift Standard EN 81-20:2014 is cited, with appropriate modifications for use in New Zealand, to incorporate modern technology and practices. The transition period for introducing EN 81-20 aligns with its introduction internationally.
- E1 Surface Water: E1/VM1
Six reference Standards are updated. Minor corrections are made to Table 1 and paragraph 9.0.6.
- E2 External Moisture: E2/AS3
The code of practice CCANZ – CP 01: 2014 errata 1 January 2015 replaces the 2014 version.
- E3 Internal Moisture: E3/AS1
Comment under paragraph 1.1.4 is corrected – clause E3 does not apply to buildings that are not Housing or Communal residential.
- F2 Hazardous Building Materials: F2/AS1
NZS 4223.3: 2016 Amendment 1 ‘Glazing in buildings – Human impact safety requirements’ replaces the 1999 version. A comment is provided on asbestos in building materials.
- F4 Safety from Falling: F4/AS1
Minor changes to Table 1 regarding barriers on stairways. A comment is provided on access to building services equipment mounted on roofs. Requirements for opening windows are clarified in section 2.0.
- F6 Visibility in Escape Routes: F6/AS1
Comments are modified to improve guidance on “occupant load” and “slopes”.
- F8 Signs: F8/AS1
AS/NZS 2293.2 is updated to the latest version and NZS 4541 is cited. Exit signs, sprinkler signage and electromagnetic compatibility are clarified (paragraphs 4.5.1, 5.4 and Appendix A respectively). Suitable LED lighting is included as an acceptable means to recharge photoluminescent signs.
- G2 Laundering: G2/AS1
The reference to AS/NZS 1229:2002 is corrected. The minimum space requirements for laundries and laundries for persons with disabilities are clarified (paragraph 1.2 and Figures 1 and 2).
- G3 Food Preparation and Prevention of Contamination: G3/AS1
The minimum clear area for domestic kitchens and the associated requirements for facilities for persons with disabilities are clarified in G3/AS1 (Figure 1 and paragraphs 1.5.1 and 1.5.2).
- G4 Ventilation: G4/AS1, G4/VM1
AS/NZS 5601.1:2013 and the Workplace Exposure Standards are updated to the latest versions, including consequential changes to G4/AS1 paragraphs 2.4.1(c) and 3.0.1.
- G10 Piped Services: G10/AS1, G10/VM1
AS/NZS 5601.1:2013 is updated to the latest version, including consequential changes to G10/AS1 paragraph 5.0.1.
- G11 Gas as an Energy Source: G11/AS1
AS/NZS 5601.1:2013 is updated to the latest version.
- G12 Water Supplies: G12/AS1, G12/AS2, G12/VM1
Eight referenced Standards for pipe materials, design and installation, including AS/NZS 3500.1 and AS/NZS 3500.4, are updated to the latest versions and BS EN 1567:1999 is referenced. Minor corrections, clarifications and consequential changes from updating Standards are made to G12/AS1 and G12/AS2.
- G13 Foul Water: G13/AS1, G13/AS2, G13/AS3, G13/VM2
Five referenced Standards for pipe materials, design and installation, including AS/NZS 3500.2, are updated to the latest versions and consequential changes are made to G13/AS1, G13/AS2 and G13/AS3. Minor changes are made in G13/AS1 relating to air admittance valves.
- G14 Industrial Liquid Waste: G14/VM1
Four referenced Standards for pipe materials and installation are updated to the latest versions.
- H1 Energy Efficiency: H1/AS1, H1/VM1
NZS 4218:2009 replaces the 2004 version in H1/AS1 and H1/VM1. Overall the requirements in H1/AS1 do not change, but foil insulation is no longer within the scope of H1/AS1.