NZS 4223.4:2000
Code of practice for glazing in buildings - Dead, wind and snow loading
Provides information on the determination of minimum glass thicknesses for vertical and sloped glazing in New Zealand governed by the limit state loadings. It supersedes the design requirements given in Part 1 concerning the selection of glazing for dead, wind and snow loading.
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COMMITTEE REPRESENTATION
COPYRIGHT
CONTENTS
RELATED DOCUMENTS
FOREWORD
REVIEW OF STANDARDS
PART 4 DEAD, WIND AND SNOW LOADING
401 SCOPE AND GENERAL
401.1 Scope
401.2 Application
401.3 Use of NZS 4223:Part 4 as a means of compliance with the New Zealand Building Code (NZBC)
401.4 Interpretation
401.5 Glazing materials
401.6 Definitions
402 SELECTION OF VERTICAL GLASS TO WITHSTAND UNIFORM WIND LOADING
402.1 Scope
402.2 General
403 SELECTION OF SLOPED GLAZING TO WITHSTAND DEAD, WIND AND SNOW LOADINGS
403.1 Scope
403.2 Design loadings
APPENDIX
4.A - Method for determination of the wind loading on vertical glazing (Normative)
4.B - Method for determination of the wind pressure on sloped glazing (Normative)
4.C - Basis for determination of thickness or area of glass in accordance with the requirements for wind loading (Informative)
4.D - Worked example (Informative)
CHARTS
1 - Minimum glass thickness – Annealed glass – Four edge support
2 - Minimum glass thickness – Annealed glass – Two edge support
3 - Minimum glass thickness – Toughened glass – Four edge support
4 - Minimum glass thickness – Toughened glass - Two edge support
5 - Minimum glass thickness – Laminated and wired glass – Four edge support
6 - Minimum glass thickness – Laminated and wired glass – Two edge support
7 - Minimum glass thickness – Patterned glass – Four edge support
8 - Minimum glass thickness – Patterned glass – Two edge support
9 - Minimum glass thickness – Insulating glass units – Four edge support
10 - Minimum glass thickness – Insulating glass units – Two edge support
11 - Minimum glass thickness – Heat strengthened glass – Four edge support
12 - Minimum glass thickness – Heat strengthened glass – Two edge support
TABLES
4.1 – Dead loads and snow loads
4.A1 – Ultimate limit state wind pressure (ULS) (kPa) for flat land areas (i.e. areas of land where the undulations are less than 25 m in height and ground slopes are less than 1 in 10 (e.g. plains))
4.A2 – Ultimate limit state wind pressure (kPa) for other than flat land
4.B1 – Basic ultimate limit state (ULS) wind pressure (kPa) for sloped glazing for flat land areas (i.e. areas of land where the undulations are less than 25 m in height and ground slopes are less than 1 in 10 (e.g. plains))
4.B2 – Basic ultimate limit state (ULS) wind pressure (kPa) for sloped glazing for areas other than flat land areas
4.B3 – Ultimate limit state (ULS) design wind pressures for sloping glass in buildings (kPa)
4.C1 – Factor for relative resistance to wind load for glasses of equal thickness
FIGURES
4.1 – Snow zones
4.A1 – Wind regions and lee zones
- B1
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COMMITTEE REPRESENTATION
COPYRIGHT
CONTENTS
RELATED DOCUMENTS
FOREWORD
REVIEW OF STANDARDS
PART 4 DEAD, WIND AND SNOW LOADING
401 SCOPE AND GENERAL
401.1 Scope
401.2 Application
401.3 Use of NZS 4223:Part 4 as a means of compliance with the New Zealand Building Code (NZBC)
401.4 Interpretation
401.5 Glazing materials
401.6 Definitions
402 SELECTION OF VERTICAL GLASS TO WITHSTAND UNIFORM WIND LOADING
402.1 Scope
402.2 General
403 SELECTION OF SLOPED GLAZING TO WITHSTAND DEAD, WIND AND SNOW LOADINGS
403.1 Scope
403.2 Design loadings
APPENDIX
4.A - Method for determination of the wind loading on vertical glazing (Normative)
4.B - Method for determination of the wind pressure on sloped glazing (Normative)
4.C - Basis for determination of thickness or area of glass in accordance with the requirements for wind loading (Informative)
4.D - Worked example (Informative)
CHARTS
1 - Minimum glass thickness – Annealed glass – Four edge support
2 - Minimum glass thickness – Annealed glass – Two edge support
3 - Minimum glass thickness – Toughened glass – Four edge support
4 - Minimum glass thickness – Toughened glass - Two edge support
5 - Minimum glass thickness – Laminated and wired glass – Four edge support
6 - Minimum glass thickness – Laminated and wired glass – Two edge support
7 - Minimum glass thickness – Patterned glass – Four edge support
8 - Minimum glass thickness – Patterned glass – Two edge support
9 - Minimum glass thickness – Insulating glass units – Four edge support
10 - Minimum glass thickness – Insulating glass units – Two edge support
11 - Minimum glass thickness – Heat strengthened glass – Four edge support
12 - Minimum glass thickness – Heat strengthened glass – Two edge support
TABLES
4.1 – Dead loads and snow loads
4.A1 – Ultimate limit state wind pressure (ULS) (kPa) for flat land areas (i.e. areas of land where the undulations are less than 25 m in height and ground slopes are less than 1 in 10 (e.g. plains))
4.A2 – Ultimate limit state wind pressure (kPa) for other than flat land
4.B1 – Basic ultimate limit state (ULS) wind pressure (kPa) for sloped glazing for flat land areas (i.e. areas of land where the undulations are less than 25 m in height and ground slopes are less than 1 in 10 (e.g. plains))
4.B2 – Basic ultimate limit state (ULS) wind pressure (kPa) for sloped glazing for areas other than flat land areas
4.B3 – Ultimate limit state (ULS) design wind pressures for sloping glass in buildings (kPa)
4.C1 – Factor for relative resistance to wind load for glasses of equal thickness
FIGURES
4.1 – Snow zones
4.A1 – Wind regions and lee zones
- B1
NZS 4223.4:2000
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.