NZS 1170.5:2004 (Includes Amdt 1)
Structural design actions - Part 5: Earthquake actions - New Zealand
Provides procedures for the determination of earthquake actions on structures in New Zealand. It gives the requirements for verification procedures, site hazard determination, the evaluation of structural characteristics, structural analysis for earthquake action effects, the determination and limits for deformations and the seismic design of parts of structures. It is to be applied in conjunction with AS/NZS 1170 parts 0, 1, 2 and 3. Appendices cover aspects of ultimate limit state design and the requirements for material specific structural design standards that are able to be used in conjunction with NZS 1170.5. This standard is used by structural engineers to assess and calculate the forces and deformations from earthquakes acting on structures such as buildings and other structures. It helps engineers design structures that comply with the New Zealand Building Code’s earthquake resistance requirements.
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NZS 1170.5:2004 STRUCTURAL DESIGN ACTIONS – EARTHQUAKE ACTIONS – NEW ZEALAND
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 DETERMINATION OF EARTHQUAKE ACTIONS
1.3 LIMIT STATES
1.4 SPECIAL STUDIES
1.5 REFERENCED DOCUMENTS
1.6 UNITS
1.7 DEFINITIONS
1.8 NOTATION
SECTION 2 VERIFICATION
2.1 GENERAL REQUIREMENTS
2.2 STRUCTURAL TYPES
2.3 ULTIMATE LIMIT STATE VERIFICATION
2.4 SERVICEABILITY LIMIT STATE VERIFICATION
2.5 DEFORMATION CONTROL
2.6 STRUCTURE PARTS
2.7 DEFORMATION DEMANDS ON STRUCTURAL MEMBERS NOT DESIGNED TO RESIST SEISMIC ACTIONS
SECTION 3 SITE HAZARD SPECTRA
3.1 ELASTIC SITE SPECTRA FOR HORIZONTAL LOADING
3.2 SITE HAZARD SPECTRA FOR VERTICAL LOADING
SECTION 4 STRUCTURAL CHARACTERISTICS
4.1 PERIOD OF VIBRATION
4.2 SEISMIC WEIGHT AND SEISMIC MASS
4.3 STRUCTURAL DUCTILITY FACTOR
4.4 STRUCTURAL PERFORMANCE FACTOR, Sp
4.5 STRUCTURAL IRREGULARITY
SECTION 5 DESIGN EARTHQUAKE ACTIONS
5.1 GENERAL
5.2 HORIZONTAL DESIGN ACTION COEFFICIENTS AND DESIGN SPECTRA
5.3 APPLICATION OF DESIGN ACTIONS
5.4 VERTICAL DESIGN ACTIONS
5.5 GROUND MOTION RECORDS FOR TIME HISTORY ANALYSES
5.6 CAPACITY DESIGN
5.7 DIAPHRAGMS
SECTION 6 STRUCTURAL ANALYSIS
6.1 GENERAL
6.2 EQUIVALENT STATIC METHOD
6.3 MODAL RESPONSE SPECTRUM METHOD
6.4 NUMERICAL INTEGRATION TIME HISTORY METHOD
6.5 P-DELTA EFFECTS
6.6 ROCKING STRUCTURES AND STRUCTURAL ELEMENTS
SECTION 7 EARTHQUAKE INDUCED DEFLECTIONS
7.1 GENERAL
7.2 DETERMINATION OF DESIGN HORIZONTAL DEFLECTIONS
7.3 DETERMINATION OF INTER-STOREY DEFLECTION
7.4 HORIZONTAL DEFLECTION LIMITS
7.5 INTER-STOREY DEFLECTION LIMITS
SECTION 8 REQUIREMENTS FOR PARTS AND COMPONENTS
8.1 GENERAL
8.2 DESIGN RESPONSE COEFFICIENT FOR PARTS AND COMPONENTS
8.3 FLOOR HEIGHT COEFFICIENT , CHi
8.4 PART OR COMPONENT SPECTRAL SHAPE COEFFICIENT
8.5 DESIGN ACTIONS ON PARTS AND COMPONENTS
8.6 PART OR COMPONENT RESPONSE FACTOR Cph
8.7 CONNECTIONS
8.8 PARTS SUPPORTED ON LEDGES
APPENDIX A – DEFINITIONS
APPENDIX B – NOTATION
APPENDIX C – DESIGNING FOR ULTIMATE LIMIT STATE
APPENDIX D – REQUIREMENTS FOR MATERIAL DESIGN STANDARDS
Amendments
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NZS 1170.5:2004 STRUCTURAL DESIGN ACTIONS – EARTHQUAKE ACTIONS – NEW ZEALAND
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 DETERMINATION OF EARTHQUAKE ACTIONS
1.3 LIMIT STATES
1.4 SPECIAL STUDIES
1.5 REFERENCED DOCUMENTS
1.6 UNITS
1.7 DEFINITIONS
1.8 NOTATION
SECTION 2 VERIFICATION
2.1 GENERAL REQUIREMENTS
2.2 STRUCTURAL TYPES
2.3 ULTIMATE LIMIT STATE VERIFICATION
2.4 SERVICEABILITY LIMIT STATE VERIFICATION
2.5 DEFORMATION CONTROL
2.6 STRUCTURE PARTS
2.7 DEFORMATION DEMANDS ON STRUCTURAL MEMBERS NOT DESIGNED TO RESIST SEISMIC ACTIONS
SECTION 3 SITE HAZARD SPECTRA
3.1 ELASTIC SITE SPECTRA FOR HORIZONTAL LOADING
3.2 SITE HAZARD SPECTRA FOR VERTICAL LOADING
SECTION 4 STRUCTURAL CHARACTERISTICS
4.1 PERIOD OF VIBRATION
4.2 SEISMIC WEIGHT AND SEISMIC MASS
4.3 STRUCTURAL DUCTILITY FACTOR
4.4 STRUCTURAL PERFORMANCE FACTOR, Sp
4.5 STRUCTURAL IRREGULARITY
SECTION 5 DESIGN EARTHQUAKE ACTIONS
5.1 GENERAL
5.2 HORIZONTAL DESIGN ACTION COEFFICIENTS AND DESIGN SPECTRA
5.3 APPLICATION OF DESIGN ACTIONS
5.4 VERTICAL DESIGN ACTIONS
5.5 GROUND MOTION RECORDS FOR TIME HISTORY ANALYSES
5.6 CAPACITY DESIGN
5.7 DIAPHRAGMS
SECTION 6 STRUCTURAL ANALYSIS
6.1 GENERAL
6.2 EQUIVALENT STATIC METHOD
6.3 MODAL RESPONSE SPECTRUM METHOD
6.4 NUMERICAL INTEGRATION TIME HISTORY METHOD
6.5 P-DELTA EFFECTS
6.6 ROCKING STRUCTURES AND STRUCTURAL ELEMENTS
SECTION 7 EARTHQUAKE INDUCED DEFLECTIONS
7.1 GENERAL
7.2 DETERMINATION OF DESIGN HORIZONTAL DEFLECTIONS
7.3 DETERMINATION OF INTER-STOREY DEFLECTION
7.4 HORIZONTAL DEFLECTION LIMITS
7.5 INTER-STOREY DEFLECTION LIMITS
SECTION 8 REQUIREMENTS FOR PARTS AND COMPONENTS
8.1 GENERAL
8.2 DESIGN RESPONSE COEFFICIENT FOR PARTS AND COMPONENTS
8.3 FLOOR HEIGHT COEFFICIENT , CHi
8.4 PART OR COMPONENT SPECTRAL SHAPE COEFFICIENT
8.5 DESIGN ACTIONS ON PARTS AND COMPONENTS
8.6 PART OR COMPONENT RESPONSE FACTOR Cph
8.7 CONNECTIONS
8.8 PARTS SUPPORTED ON LEDGES
APPENDIX A – DEFINITIONS
APPENDIX B – NOTATION
APPENDIX C – DESIGNING FOR ULTIMATE LIMIT STATE
APPENDIX D – REQUIREMENTS FOR MATERIAL DESIGN STANDARDS
Amendments
NZS 1170.5:2004 (Includes Amdt 1)
Online Library subscription pricing
The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz.