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AS/NZS 3500.1:2003
[Available Superseded]Plumbing and drainage, Part 1: Water services
This Standard sets out the requirements for the installation of water services from the point of connection to the Network Utility's water supply or from an alternative drinking water supply to the points of discharge. This Standard applies to new installations as well as alterations, additions and repairs to existing installations.
Published: 15/12/2003
Pages: 119
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope and general
1.1 Scope
1.2 Application
1.2.1 Plumbing Code of Australia
1.2.2 New Zealand Building Code
1.3 Normative references
1.4 Definitions
1.5 Equivalent pipe sizes
1.6 Facilities for people with disabilities
1.7 Plastics abbreviations
1.8 Termite management
2 Materials and products
2.1 Scope of Section
2.2 Authorization
2.3 Selection and use of materials and products
2.4 Limitations on use of pipes and fittings
2.4.1 General limitations
2.4.2 Metallic pipes and fittings
2.4.3 Plastics pipes and fittings
2.5 ‘Text deleted’
2.6 Safe tray and safe waste materials
2.6.1 Safe trays
2.6.2 Safe waste pipes
2.7 Joints
2.7.1 Flanged joints
2.7.2 Elastomeric seals
2.7.3 Shouldered or grooved joints
2.7.4 Silver brazing alloy
2.7.4.1 Copper and copper alloys
2.7.4.2 Stainless steels
2.7.5 Soft solders
2.7.6 Solvent cement and priming fluid
2.7.7 Filler rods for stainless steel joints
2.8 Concrete and mortar
2.8.1 Concrete mix
2.8.2 Cement mortar
2.8.3 Chemical admixtures
2.8.4 Water for concrete and mortar
2.8.5 Steel reinforcement
2.9 Miscellaneous materials
2.9.1 Timber
2.9.2 External protective coatings
2.10 Backflow prevention devices
3 Sizing of water services
3.1 Scope of Section
3.2 Flow requirements
3.2.1 Flow rates
3.2.2 Loading units
3.2.3 Probable simultaneous demand
3.2.3.1 Single dwelling
3.2.3.2 Multiple dwellings
3.2.4 Probable simultaneous flow rate
3.3 Pressure requirements
3.3.1 Available pressure
3.3.2 Pressure at outlets
3.3.3 Head losses
3.3.4 Maximum pressure within buildings
3.3.5 Availability of water supply
3.4 Velocity requirements
3.5 Pipe size limitations
3.5.1 Water service
3.5.2 Branch offtakes
4 Cross-connection control and backflow prevention
4.1 Scope of Section
4.2 Protection of water supplies
4.2.1 Design
4.2.2 Quality of water supply
4.2.3 Protection against contaminants
4.2.4 Combined tanks
4.2.5 Alternative water supplies
4.2.6 Authorized fixtures, appliances or apparatus
4.3 Cross-connection hazard rating
4.4 Provision of backflow prevention devices
4.4.1 General
4.4.2 Type of backflow protection
4.4.3 Hose taps
4.4.4 Additional backflow protection
4.4.5 Water downstream of backflow prevention device
4.4.6 Commissioning and maintenance
4.4.7 Hot water systems
4.5 Suitability of devices for hazards
4.6 Installation of backflow prevention devices
4.6.1 General installation requirements
4.6.2 Location of devices
4.6.2.1 General
4.6.2.2 Accessibility
4.6.2.3 Drainage and leakage
4.6.3 Specific installation requirements for testable and non-testable devices
4.6.3.1 General
4.6.3.2 Testable devices
4.6.3.3 Non-testable devices
5 Installation of cold water services
5.1 Scope of Section
5.2 Electrical safety precautions and earthing
5.3 Proximity to other services
5.3.1 General
5.3.2 Separation from above-ground electrical conduit, wire, cable or consumer gas pipes
5.3.3 Separation from underground electrical supply cables or consumer gas pipes
5.3.3.1 Electrical supply cables
5.3.3.2 Consumer gas pipes
5.3.4 Separation from underground electrical earthing electrode
5.3.5 Separation from underground communication cable
5.3.6 Separation from underground drains
5.3.7 Separation from non-drinking water (see also Clause 9.5.3)
5.3.8 Separation from other underground services
5.3.9 Crossover of other underground services
5.3.10 Clearance from underground obstructions
5.4 Isolating valves
5.4.1 General
5.4.2 Location
5.4.3 On fire services
5.4.4 Multiple dwellings
5.4.5 Maintenance
5.5 Location of piping
5.5.1 Location
5.5.2 Concealed piping
5.5.2.1 Walls
5.5.3 Chases, ducts or conduits
5.5.4 Under concrete slabs
5.6 Methods of jointing
5.6.1 General
5.6.2 Threading
5.6.3 Bolted gland and gibault type joints
5.6.3.1 General
5.6.3.2 Joints below ground
5.6.4 Capillary fitting
5.6.5 Compression joints
5.6.6 Flanged joints
5.6.7 Roll-grooved joints
5.6.8 Silver brazing
5.6.8.1 Joints
5.6.8.2 Taps and valves
5.6.9 Soft soldering
5.6.10 Solvent cement joints
5.6.11 Jointing of stainless steel pipe and fittings
5.6.11.1 Jointing of piping, up to and including DN 25
5.6.11.2 Jointing of piping larger than DN 25
5.7 Support and fixing above ground
5.7.1 General
5.7.2 Brackets, clips and hangers
5.7.3 Prohibited supports
5.7.4 Spacing
5.7.5 Securing of pipes and fittings
5.8 Standpipes
5.9 Anchorage below ground
5.9.1 General
5.9.2 Location of thrust blocks (see Figure 5.4)
5.9.3 Construction of thrust blocks
5.9.4 Curing time for thrust blocks
5.10 Depth of cover
5.11 ‘Text deleted’
5.12 Bedding and backfill
5.13 Contaminated areas
5.13.1 General
5.13.2 Installation
5.14 Corrosive areas
5.14.1 General
5.14.2 Jointing of dissimilar metallic pipes and fittings
5.15 Pipes in water-charged or filled ground
5.16 Open channels or watercourses
5.17 Private easements
5.17.1 Proximity of water services
5.17.2 Depth of piping
5.18 Dry services
5.19 Protection against freezing
5.19.1 Requirement for protection
5.19.2 Piping located outside buildings
5.19.3 Pipes located on metal roofs
5.19.4 Pipes located inside buildings
5.19.4.1 General
5.19.4.2 Pipes in unheated roof spaces
5.19.4.3 Pipes adjacent to external walls
5.19.5 Insulation of piping
5.20 General precautions for plastics pipes and fittings
5.21 Identification of piping
5.22 Temperature control devices
5.23 Bushfire zones
6 Fire services
6.1 Scope of Section
6.2 General
6.3 Materials and products
6.4 Installation
6.5 Metering of a fire hydrant or sprinkler service
6.6 Water storage tanks
6.7 Pressure reduction
6.8 Identification
7 Irrigation and lawn‑watering systems
7.1 Scope of Section
7.2 System types
7.3 Backflow protection requirements
7.4 Materials
8 Water storage tanks
8.1 Scope of Section
8.2 Purpose of tanks
8.2.1 General
8.2.2 Limitations on use
8.3 Design and installation requirements
8.3.1 General
8.3.2 Capacity of storage tanks—Measurement
8.3.3 Access
8.3.4 Placement of tank
8.3.4.1 Safe-tray
8.3.4.2 Limitations on location of drinking water tanks
8.4 Tank design
8.4.1 General
8.4.2 Internal corrosion protection
8.4.3 Tank cover
8.4.4 Tank overflow
8.4.4.1 General
8.4.4.2 Discharge of overflow
8.4.4.3 Discharge not readily visible
8.4.4.4 Size of air gap
8.5 Inlet piping
8.5.1 Connections
8.5.2 Stop valve
8.6 Outlet piping
8.6.1 Connections
8.6.2 Service outlets
8.7 Sludge valves
8.8 Safe-tray
8.8.1 General
8.8.2 Safe-tray construction
8.8.3 Overflow
8.9 Marking of tanks
9 Non-drinking water services
9.1 Scope of Section
9.2 General
9.3 Cross-connection control
9.4 Materials and products
9.5 Installation requirements
9.5.1 Installation
9.5.2 Non-drinking water services and outlets
9.5.2.1 Service pipes
9.5.2.2 Service fittings
9.5.2.3 External hose tap outlets other than those installed as part of a fire service
9.5.2.4 Other outlets including fire service outlets
9.5.3 Proximity to other services
9.5.4 ‘Text deleted’
9.5.5 Water meters
9.6 Testing and commissioning a non-drinking water service
9A Treated greywater services
9A.1 Scope of Section
9A.2 General
9A.3 Cross-connection control
9A.4 Protection of other water supplies from treated greywater
9A.5 Materials and products
9A.6 Installation
10 Water for sanitary flushing
10.1 Scope of Section
10.2 General
10.3 Water closet flushing volumes
10.3.1 Flushing volumes
10.3.2 Performance compatibility of cisterns and pans
10.4 Urinals
10.4.1 Quantity of flushing water
10.4.2 Automatic cisterns
10.4.3 Programmed flushing systems
10.4.4 Flushing devices operated on demand
10.4.5 Location of flush valves
10.5 Installation of cisterns
10.5.1 General
10.5.2 Urinal type cisterns
10.5.3 Manually operated cisterns
10.5.4 Water closet pan and slop hopper pan type cisterns
10.6 Flush valves supplied from break tanks
10.6.1 General
10.6.2 Capacity
10.6.3 Operating head
10.6.4 Pipe size guide
10.6.5 Urinal type flush valves
10.7 Flush pipes and water flow distribution
10.8 Pressure ratio valves
10.8.1 General
10.8.2 Requirement for pressure gauges
10.9 Flush valves connected to the drinking water service
10.9.1 General
10.9.2 Compatibility
10.9.3 Pipe size
10.9.4 Protection
10.9.5 Location
10.9.6 Pressure and velocity limitations
10.9.7 Branch service pipe
10A Installation of water supply to specified fixtures
10A.1 Scope of Section
10A.2 Bidet, bidette and toilet seat douche
10A.2.1 Bidets
10A.2.2 Bidette
10A.2.3 Toilet seat douches
11 Pumps
11.1 Scope of Section
11.2 General
11.3 Control of pumps
11.4 Installation of pumps
11.5 Booster pumps
12 Water requirements for haemodialysis machines
12.1 Scope of Section
12.2 General
12.3 Connection to the water service
12.4 Maintenance of flow rate
12.5 Water meters
13 Water meters
13.1 Scope of Section
13.2 Location of water meters
13.3 Installation inside buildings
13.4 Installation below ground
13.5 Protection from mechanical damage
13.6 Electrical safety precautions
13.7 Frost protection
14 Installation of water supply system from rainwater tanks
14.1 Scope of Section
14.2 Pipes, valves and fittings
14.3 Installation
14.3.1 General
14.3.2 Additional marking and signage of pipework and outlets
14.3.2.1 Pipework
14.3.2.2 Water outlets
14.3.3 Connection between service pipes
14.4 Protection of other water supplies from rainwater
15 Multi-unit developments
15.1 Scope of Section
15.2 Methods of design
15.3 Division of development
15.4 Ring mains and flushing points
15.5 Fire services
16 Testing and commissioning
16.1 Scope of Section
16.2 Flushing
16.3 Testing
16.3.1 Hydrostatic test
16.3.2 Storage tanks (except rainwater tanks)
16.4 Cleaning and disinfection of drinking water storage tanks
16.5 Disinfection of water services
16.6 Commissioning
Appendix A
Appendix B
Appendix C
C1 General
C2 Procedure
C3 Worked example
Appendix D
D1 General
D2 Procedure
D3 Worked example
Appendix E
E1 Scope
E2 Potential cross-connections
Appendix F
Appendix G
G1 General
G2 Inflow rate
G3 Overflow size and spilling level
G4 Air gap
G5 Height of inlet above invert level of overflow
Appendix H
H1 General
H2 Cleaning
H3 Disinfection
Appendix I
I1 General
I2 Precautions against contamination
I3 Flushing of water services
I4 Chlorination
I5 Final flushing
Appendix J
J1 Scope
Amendment control sheet
Bibliography
Cited references in this standard
Content history
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