G4/VM1: Ventilation verification method

G4 VENTILATION VERIFICATION METHOD G4/VM1 References and Definitions Appendix A. References For the purposes of Building Code compliance, the standards referenced in this verification method must be the editions, along with their specific amendments, listed below. Chartered Institution of Building Services Engineers Where quoted CIBSE Code Series A:1996 Air distribution systems 2.1.1.1 This document can be accessed from www.cibse.org. Worksafe New Zealand Mahi Haumaru Aotearoa Where quoted Workplace exposure standards and biological exposure indices 10th Edition, 2.2.1.1 November 2018 This document can be accessed from www.www.worksafe.govt.nz. Appendix B. Definitions These definitions are specific to this verification method. Term Definition Building Has the meaning given to it by sections 8 and 9 of the Building Act 2004. Outdoor air Air as typically comprising by volume: i) oxygen 20.94% ii) carbon dioxide 0.03% iii) nitrogen and other inert gases 79.03%. MINISTRY OF BUSINESS, INNOVATION AND EMPLOYMENT 28 JULY 2025 Page 6