NZS 4223:Part 4 provides information on the determination of minimum glass thicknesses for vertical and sloped glazing in New Zealand as governed by the limit state loadings.
NZS 4223.4:2000 history
2008NZS 4223.4:2008 Glazing in buildings Part 4: Wind, dead, snow, and live actions
2000NZS 4223.4:2000 Glazing in Buildings Part 4 - Dead, Wind and Snow Loadings