NZS 1170.5:2004 (Excludes 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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Technical Committee
PREFACE
CONTENTS
S E C T I O N 1 S C O P E A N D G E N E R A L
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
S E C T I O N 2 V E R I F I C A T I O N
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
S E C T I O N 3 S I T E H A Z A R D S P E C T R A
3.1 ELASTIC SITE SPECTRA FOR HORIZONTAL LOADING
3.2 SITE HAZARD SPECTRA FOR VERTICAL LOADING
S E C T I O N 4 S T R U C T U R A L C H A R A C T E R I S T I C S
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
S E C T I O N 5 D E S I G N E A R T H Q U A K E A C T I O N S
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
S E C T I O N 6 S T R U C T U R A L A N A L Y S I S
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
S E C T I O N 7 E A R T H Q U A K E I N D U C E D D E F L E C T I O N S
7.1 GENERAL
7.2 DETERMINATION OF DESIGN HORIZONTAL DEFLECTIONS
7.3 DETERMINATION OF DESIGN INTER-STOREY DEFLECTION
7.4 HORIZONTAL DEFLECTION LIMITS
7.5 INTER-STOREY DEFLECTION LIMITS
S E C T I O N 8 R E Q U I R E M E N T S F O R P A R T S A N D C O M P O N E N T S
8.1 GENERAL
8.2 DESIGN RESPONSE COEFFICIENT FOR PARTS
8.3 FLOOR HEIGHT COEFFICIENT , CHi
8.4 PART SPECTRAL SHAPE COEFFICIENT
8.5 DESIGN ACTIONS ON PARTS
8.6 PART RESPONSE FACTOR Cph
8.7 CONNECTIONS
APPENDIX A DEFINITIONS
APPENDIX B NOTATION
APPENDIX C DESIGNING FOR ULTIMATE LIMIT STATE
APPENDIX D REQUIREMENTS FOR MATERIAL DESIGN STANDARDS
Table
3.1 SPECTRAL SHAPE FACTOR, Ch (T)
3.2 MAXIMUM DEPTH LIMITS FOR SITE SUBSOIL CLASS C
3.3 Z-VALUES AND SHORTEST MAJOR FAULT DISTANCES D FOR NEW ZEALAND LOCATIONS (North to South)
3.4 ALPHABETICAL LIST OF LOCATIONS
3.5 RETURN PERIOD FACTOR
3.6 MAJOR FAULTS REQUIRING NEAR-FAULT FACTORS > 1.0
3.7 MAXIMUM NEAR-FAULT FACTORS Nmax(T)
6.1 DEFLECTION SCALE FACTORS
7.1 DRIFT MODIFICATION FACTOR
8.1 CLASSIFICATION OF PARTS
8.2 PART RESPONSE FACTOR, Cph and Cpv
C1 VALUES OF ks
STANDARDS COUNCIL APPROVAL
- A1
- B1
- G12
Previous versions
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Related Information
Building Code Compliance Document B1
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: VM1
Citation context:Applicable to NZS 1170.5:2004 (unamended version only), i.e. excluding amendment 1
HSNOCOP 61 Rotationally Moulded Polyethylene Storage Tanks for Non Flammable Hazardous Substances - Revoked
Ministry: Association of Rotational Moulders Australasia Inc
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Section: 2.2
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Section: 5.6
Citation context:The RSMA Compliance standard for traffic signs 2008 provides guidance and specifications for the design of frangible supports including reference to: • specific designs to Australian Standard/New Zealand Standard 1170 Structural Design Actions Set (AS/NZS1170)...
Building Code Compliance Document G12
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Citation context:Where appropriate, the environmental loads shall include the following: …Earthquake loads in accordance with AS/NZS 1170 (and supplements).
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Section: 9.1.1
Citation context:Table 15 contains a general list of applicable relevant standards a number of which have been consulted in the preparation of the BPG. Additional information on particular standards and specific referencing are contained at various points throughout this
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Citation context:In determining what information to consult and how to approach falsework design, no single document provides all the answers. Sources of information for scaffolders, chartered and design engineers include: …AS/NZS 1170 parts 0 - 3 and NZS 1170.5; ...
Hazardous Substances (Dangerous Goods And Scheduled Toxic Substances) Transfer Notice 2004
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Section: Schedule 8, Regulation 8(4)(a)(v)
Citation context:Every above ground stationary tank used to store hazardous liquids must be designed and constructed in accordance with ... AS/NZS 1170.5:2004 or ...
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Section: 1.2.1.1
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Section: 2.4(3)(a)
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Ministry: WorkSafe New Zealand
Section: Appendix C Referenced documents
Citation context:NZS 1170.5 Structural Design Actions – Earthquake Actions
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Section: 6.0
Citation context:Listed as a relevant standard
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Citation context:The design of storage and transport frames should meet standards outlined in:... ...AS/NZS 1170 series: New Zealand structural design actions standard series.... ...Storage racks, frames and supports should be designed for the shape, size and weight of the precast concrete element, and to resist the loads and forces applied to them. Design should consider wind zones and ground conditions, and refer to the latest version of the following standards:... ...New Zealand structural design actions standard (AS/NZS 1170)
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Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: 20
Citation context:Effective 13/05/2024 - the seismic hazard factor (Z factor) must be calculated in accordance with New Zealand Standard NZS 1170.5:2004 (Structural design actions—Part 5: Earthquake actions—New Zealand), whether or not that standard would otherwise apply.
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Technical Committee
PREFACE
CONTENTS
S E C T I O N 1 S C O P E A N D G E N E R A L
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
S E C T I O N 2 V E R I F I C A T I O N
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
S E C T I O N 3 S I T E H A Z A R D S P E C T R A
3.1 ELASTIC SITE SPECTRA FOR HORIZONTAL LOADING
3.2 SITE HAZARD SPECTRA FOR VERTICAL LOADING
S E C T I O N 4 S T R U C T U R A L C H A R A C T E R I S T I C S
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
S E C T I O N 5 D E S I G N E A R T H Q U A K E A C T I O N S
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
S E C T I O N 6 S T R U C T U R A L A N A L Y S I S
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
S E C T I O N 7 E A R T H Q U A K E I N D U C E D D E F L E C T I O N S
7.1 GENERAL
7.2 DETERMINATION OF DESIGN HORIZONTAL DEFLECTIONS
7.3 DETERMINATION OF DESIGN INTER-STOREY DEFLECTION
7.4 HORIZONTAL DEFLECTION LIMITS
7.5 INTER-STOREY DEFLECTION LIMITS
S E C T I O N 8 R E Q U I R E M E N T S F O R P A R T S A N D C O M P O N E N T S
8.1 GENERAL
8.2 DESIGN RESPONSE COEFFICIENT FOR PARTS
8.3 FLOOR HEIGHT COEFFICIENT , CHi
8.4 PART SPECTRAL SHAPE COEFFICIENT
8.5 DESIGN ACTIONS ON PARTS
8.6 PART RESPONSE FACTOR Cph
8.7 CONNECTIONS
APPENDIX A DEFINITIONS
APPENDIX B NOTATION
APPENDIX C DESIGNING FOR ULTIMATE LIMIT STATE
APPENDIX D REQUIREMENTS FOR MATERIAL DESIGN STANDARDS
Table
3.1 SPECTRAL SHAPE FACTOR, Ch (T)
3.2 MAXIMUM DEPTH LIMITS FOR SITE SUBSOIL CLASS C
3.3 Z-VALUES AND SHORTEST MAJOR FAULT DISTANCES D FOR NEW ZEALAND LOCATIONS (North to South)
3.4 ALPHABETICAL LIST OF LOCATIONS
3.5 RETURN PERIOD FACTOR
3.6 MAJOR FAULTS REQUIRING NEAR-FAULT FACTORS > 1.0
3.7 MAXIMUM NEAR-FAULT FACTORS Nmax(T)
6.1 DEFLECTION SCALE FACTORS
7.1 DRIFT MODIFICATION FACTOR
8.1 CLASSIFICATION OF PARTS
8.2 PART RESPONSE FACTOR, Cph and Cpv
C1 VALUES OF ks
STANDARDS COUNCIL APPROVAL
- A1
- B1
- G12
Previous versions
NZS 1170.5:2004 (Excludes Amdt 1)
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.