Description

Provides easy to use tables for minimum glass thicknesses calculated for stress at the ultimate limit state wind pressures and for deflection at serviceability limit state wind pressures. This Supplement is intended as a companion document to NZS 4223, Glazing in buildings Part 1:2008 and Part 4:2008.

Scope

This Supplement, Section 2 to 5, provides tables for the minimum glass thickness calculated for stress at ultimate limit state (ULS) and deflection at the serviceability limit state (SLS) wind pressures.

Section 6 provides minimum silicone bite sized for faceted glazing.

Section 7 provides minimum fin thickness and depth for fin glazing.

This Supplement is intended to be used in conjunction with NZS 4223 Part 1 and Part 4. When selecting glass type and thicknesses, it is essential to take into consideration the relevant glazing support conditions and intended application.

For 3 mm monolithic annealed glass, the maximum area shall not exceed 0.50 m² . For 3 mm annealed glass used in insulated glass units (IGUs), the maximum area shall not exceed 0.75 m² (refer NZS 4223.1 Clause 3.6.3).