Table of Contents

1 Scope And Interpretation

1.1 Scope

1.2 Interpretation

1.3 Compliance With New Zealand Building Code

1.4 Definitions

1.5 Notation

2 General Requirements

2.1 Objectives

2.2 Criteria

2.3 General Requirements For Engineering Systems Subject To Earthquake Actions

2.4 Proprietary Components

3 Non-Specific Design Of Restraint Systems

3.1 General

3.2 Design Procedure

3.3 Classification

3.4 Earthquake Load Demand

3.5 Relative Seismic Displacement

3.6 Linear Components

3.7 Floor-Mounted Components

3.8 Suspended Components

3.9 Miscellaneous Components

3.10 Fixings

3.11 Braces

4 Specific Design Of Restraint Systems

4.1 General

4.2 Earthquake Actions

4.3 Design

4.4 Fixings

4.5 Testing

5 Specific Requirements

5.1 Application

5.2 Interaction Between Components

5.3 Brittle Components

5.4 Plinths

5.5 Vibration Isolated And Resilient Mountings

5.6 Tanks And Vessels

5.7 Flues And Stacks

5.8 Piping Systems

5.9 Ducting

5.10 Hazardous Substances

5.11 Non-Essential Electrical Service

5.12 Emergency Electrical Systems

5.13 Suspended Ceilings, Equipment Suppored By The Ceiling, And Equipment In Ceiling Voids

5.14 Luminaires

5.15 Independently Suspended Ceiling Components

5.16 Communication, Data, And Control Systems

Appendices

Appendix A –Building Importance Levels

Appendix B –Component Classifications

Appendix C – Performance Factors

Appendix D –Example Calculations

D1 List Of Examples

D2 Boiler

D3 Ventilation Duct

D4 Pressure Tank

D5 Fire Hydrant Pipe

D6 Thin-Walled Water Tank On Top Of A Multi-Storey Office Building

D7 Thin-Walled Water Tank On Top Of A Multi-Storey Healthcare Building

D8 Pipe Loop Crossing A Seismic Break

D9 Ceiling Suspended 35 Kg Air Conditioner (Mounted 400 Mm Below Concrete Slab)

D10 Ceiling Suspended 350 Kg Air Conditioner (Mountented 1000 Mm Below Concrete Slab)

D11 Oil Supply Daily Service Tank In Top Floor Plant Room

D12 Oil Supply Daily Service Tank In Top Floor

D13 Plinth

D14 Electrical Cabinet

D15 Ventilating Fan On Multi-Storey Building With Roof Parapet

D16 Ventilating Fan On Multi-Storey Building Without A Roof Parapet

Figure

1 – Illustration Of Terms

2 – Zone Factor, Z

3 – Restraint Of Linear Components

4 – Forces On Linear Components

5 – Forces On Floor-Mounted Components

6 – Forces On Tall Braced Components

7 – Forces On Floor-Mounted Components Using Type 1 Mounts Without Snubbers

8 – Forces On Floor-Mounted Components Using Type 2 Mounts With Snubbers

9 – Anchor Bolt Force Calculation Of Independent Fixings Such As Used Forvibration-Isolated Components

10 – Forces On Suspended Components

11 – Design Strengths Of Bolts Cast In Concrete

12 – Typical Detail Of Bolt Cast Into Concrete Masonry

13 – Bolted And Welded Brace Fixings

14 – Fully Welded Base Plate Fixing

15 – Typical Plinth Details

16 – Pipework Restraints

17 – Examples Of Pipework Restraint

D1 – Boiler Example And Force Diagram

D2 – Side Elevation Of Ventilation Duct Example

D3 – Final Layout Of The Duct And Supports

D4 – Pressure Tank Example And Force Diagram

D5 – Alternative Solution For Pressure Tank Bracing

D6 – Thin Walled Water Tank Force Diagram

D7 – Final Layout Of Thin-Walled Tanks And Supports

D8 – Pipe Loop Crossing Seismic Break

D9 – Examples Of Flexible Couplings

D10 – Air Conditioner Suspended Below A Concrete Slab

D11 – Bracing Layout For Air Conditioner Suspended 400 Mm Below Concrete Slab

D12 – Air Conditioner (Suspended 400 Mm) Force Diagram

D13 – Force Diagram For Air Conditioner (Suspended 400 Mm) Anchor Size

D14 – Bracing Layout For Air Conditioner Suspended 1000 Mm Below Concrete Slab

D15 – Air Conditioner (Suspended 1000 Mm) Force Diagram

D16 – Force Diagram For Air Conditioner (Suspended 1000 Mm) Anchor Size

D17 – Oil Supply Tank Bracing Layout

D18 – Oil Supply Tank (Plant Room) Force Diagram

D19 – Oil Supply Tank (Not Located In Plant Room) Force Diagram

D20 – Plinth Layout And Force Diagram

D21 – Electrical Cabinet Example And Force Diagram

D22 – Ventilating Fan Layout

Table

1 – Classification Of Importance Level

2 – Determination Of Category

3 – Zone Factors For New Zealand Locations (North To South)

4 – Performance Factors

5 – Determination Of Component Risk Factor

6 – Spacing Of Transverse Pipe Restraints

7 – Spacing Of Longitudinal Pipe Restraints

8 – Woodscrew Design Strengths

9 – Coach Screw Design Strengths

10 – Capacities Of Bolts In Shear

11 – Design Strength Of Bolts Embedded In Concrete Masonry

12 – Specification For Brace And Fastener Materials

13 – Capacity Of Braces In Tension

14 – Capacity Of Braces In Compression

15 – Clearances

16 – Reinforcement Requirements For Plinths