New Zealand · Verification Method
G4/VM1: Ventilation verification method
Verification Method for demonstrating ventilation performance under clause G4 of the New Zealand Building Code.
- Edition
- Fifth edition · effective 28 July 2025
- Search coverage
- 7 of 7 PDF pages
Ventilation
Open original PDF at page 4 Source wording and page order preserved. Drawings and table layouts remain available in the original PDF.
G4 VENTILATION VERIFICATION METHOD G4/VM1
Contents
Contents
PART 1. GENERAL ....................................................................................................................... 5
1.1 Introduction ......................................................................................................................... 5
PART 2. VENTILATION RATE AND AIR PURITY ............................................................................... 5
2.1 Ventilation rate ..................................................................................................................... 5
2.2 Air purity .............................................................................................................................. 5
APPENDIX A. REFERENCES ...................................................................................................... 6
APPENDIX B. DEFINITIONS ...................................................................................................... 6
MINISTRY OF BUSINESS, INNOVATION AND EMPLOYMENT 28 JULY 2025 Page 4
Edition and local adoption determine which requirements apply. Use the publisher’s document for the complete clauses, diagrams and amendments.