AS 3500.2-1990

1 - AS 3500.2-1990 NATIONAL PLUMBING AND DRAINAGE CODE - PART 2: SANITARY PLUMBING AND SANITARY DRAINAGE
4 - PREFACE
5 - CONTENTS
9 - FOREWORD
10 - SECTION 1 SCOPE AND GENERAL
10 - 1.1 SCOPE
10 - 1.2 APPLICATION
10 - 1.2.1 General
10 - 1.2.2 New materials and methods
10 - 1.2.3 Unusual installations
10 - 1.3 REFERENCED DOCUMENTS
10 - 1.4 DEFINITIONS
11 - 1.5 HEALTH REQUIREMENTS
11 - 1.6 CLASSIFICATION OF SOILS
11 - 1.7 CLASSIFICATION OF BUILDINGS
11 - 1.8 MEASUREMENT OF PIPE LENGTH
11 - 1.9 FIRE-RESISTANCE LEVEL (FRL)
11 - 1.10 SAFETY
11 - 1.11 PIPE GRADES
12 - SECTION 2 MATERIALS AND PRODUCTS
12 - 2.1 SCOPE OF SECTION
12 - 2.2 AUTHORIZATION
12 - 2.3 SELECTION AND USE
12 - 2.4 PIPES AND FITTINGS FOR NON-PRESSURE APPLICATIONS
12 - 2.4.1 Copper pipes
12 - 2.4.2 Copper fittings
13 - 2.4.3 Copper alloy pipes
13 - 2.4.4 Ductile iron
13 - 2.4.5 Galvanized steel
13 - 2.4.6 Glass
13 - 2.4.7 Glass-filament-reinforced thermosetting plastics (GRP) pipes
13 - 2.4.8 Polypropylene fittings
13 - 2.4.9 Unplasticized polyvinyl chloride (UPVC)
13 - 2.4.10 Vitrified clay
13 - 2.5 PIPES AND FITTINGS FOR PRESSURE APPLICATIONS
14 - 2.6 SHEET
14 - 2.6.1 Copper
14 - 2.6.2 Copper alloy
14 - 2.6.3 Stainless steel
14 - 2.7 JOINTING COMPONENTS
14 - 2.7.1 Rubber rings
14 - 2.7.2 Rubber gaskets
14 - 2.7.3 Silver brazing alloy
14 - 2.7.4 Solvent cement and priming fluid
14 - 2.8 CONCRETE AND MORTAR
14 - 2.8.1 Cement
14 - 2.8.2 Fine aggregate (sand)
14 - 2.8.3 Coarse aggregate (metal)
14 - 2.8.4 Concrete mix
15 - 2.8.5 Cement mortar
15 - 2.8.6 Chemical admixtures
15 - 2.8.7 Water for concrete and mortar
15 - 2.8.8 Steel reinforcement
15 - 2.9 MISCELLANEOUS
15 - 2.9.1 Timber
15 - 2.9.2 Epoxy resins
15 - 2.9.3 Pipe bedding
15 - 2.9.4 Backfill
15 - 2.9.5 External protective coatings
15 - 2.9.6 Glass-fibre-reinforced plastics tanks
16 - 2.9.7 Geotextiles
17 - SECTION 3 DRAINAGE DESIGN
17 - 3.1 SCOPE OF SECTION
17 - 3.2 LOCATION OF DRAINS
17 - 3.3 SIZE OF DRAINS
17 - 3.3.1 Fixture unit loading
17 - 3.3.2 Main drain
17 - 3.3.3 Branch drains
17 - 3.3.4 Limitations on branch drains
17 - 3.3.5 Use of eccentric taper fitting
18 - 3.3.6 Size change
18 - 3.3.7 Oversizing of drains
18 - 3.3.8 Downstream of boundary trap
19 - 3.4 GRADES OF DRAINS
19 - 3.4.1 Minimum grade
20 - 3.4.2 Reduced grades
20 - 3.4.3 Steep grades
20 - 3.4.4 Anchor blocks
21 - 3.5 DRAINS IN ROADS, EASEMENTS, PUBLIC PLACES, WATERCOURSES, AND RIGHTS OF WAY
21 - 3.5.1 General
21 - 3.5.2 Easements and watercourses
22 - 3.5.3 Public roads and rights of way
22 - 3.6 PROXIMITY TO OTHER SERVICES
22 - 3.6.1 Electrical cables and gas pipes
22 - 3.6.2 Stormwater pipes
22 - 3.6.3 Water service
22 - 3.6.4 Other crossovers
23 - 3.7 DEPTH OF COVER
23 - 3.7.1 General
23 - 3.7.2 Drains with adequate cover
24 - 3.7.3 Drains without adequate cover
24 - 3.7.4 Drains under buildings
24 - 3.8 BUILDING OVER DRAINS
24 - 3.8.1 Alterations and additions to buildings
24 - 3.8.2 Drains in proximity to footings and foundations
25 - 3.9 FIXTURE CONNECTIONS TO VITRIFIED CLAY DRAINS UNDER BUILDINGS
25 - 3.10 VENTING OF DRAINS
25 - 3.10.1 General
26 - 3.10.2 Location
26 - 3.10.3 Size of drainage vents
27 - 3.11 UNVENTED BRANCH DRAINS
27 - 3.11.1 General
27 - 3.11.2 Sizing
27 - 3.11.3 Maximum length
28 - 3.11.4 Vertical sections
28 - 3.11.5 Connection of fixture discharge pipes
28 - 3.12 UNVENTED DRAINS DISCHARGING TO GULLIES
28 - 3.12.1 General
28 - 3.12.2 Length of unvented section
28 - 3.13 RESTRICTION ON CONNECTIONS IN PROXIMITY TO A STACK
28 - 3.14 RE-USE OF EXISTING DRAINS
29 - 3.15 DRAINS IN CARAVAN PARKS
29 - 3.15.1 General
29 - 3.15.2 Soil waste dump points
30 - 3.15.3 Connection points for short-term sites
30 - 3.15.4 Relocatable dwellings located on long-term sites
33 - 3.16 VACUUM SYSTEMS
33 - 3.17 COMMON EFFLUENT DRAINAGE SYSTEM
33 - 3.17.1 General
33 - 3.17.2 Drainage connections
34 - 3.17.3 Septic tanks
34 - 3.17.4 Sullage tanks
37 - SECTION 4 DRAINAGE SYSTEM
37 - 4.1 SCOPE OF SECTION
37 - 4.2 POINT OF CONNECTION
37 - 4.2.1 General
37 - 4.2.2 Protection of sewers
37 - 4.2.3 Tidal or water-charged locations
37 - 4.3 DRAINS
37 - 4.3.1 Below ground
38 - 4.3.2 Above ground under buildings
38 - 4.4 INSPECTION SHAFTS AND BOUNDARY TRAPS
38 - 4.4.1 General
38 - 4.4.2 Inspection shafts and boundary trap risers
39 - 4.4.3 Installation of inspection shafts
39 - 4.4.4 Installation of boundary traps
40 - 4.5 REFLUX VALVES
40 - 4.5.1 Location
40 - 4.5.2 Installation
40 - 4.5.3 Stack discharge
40 - 4.5.4 Surcharging sewer
40 - 4.5.5 Reflux valve chambers
41 - 4.6 GULLIES
41 - 4.6.1 General
41 - 4.6.2 Installation
41 - 4.6.3 Maintenance of water seal
41 - 4.6.4 Prohibited discharge
41 - 4.6.5 Disconnector gullies inside buildings
42 - 4.6.6 Overflow relief gullies
45 - 4.6.7 Floor waste gullies
47 - 4.6.8 Charging floor waste gullies
49 - 4.7 INSPECTION OPENINGS (see Figure 4.4)
49 - 4.7.1 General
50 - 4.7.2 Size
50 - 4.7.3 Types
50 - 4.7.4 Access within buildings
50 - 4.7.5 Sealing
50 - 4.8 INSPECTION CHAMBERS
50 - 4.8.1 General
50 - 4.8.2 Size
50 - 4.8.3 Prefabricated chambers
50 - 4.8.4 Construction
52 - 4.8.5 Differential settlement
52 - 4.9 JUNCTIONS IN DRAINS
52 - 4.9.1 General
52 - 4.9.2 Discharge pipes
52 - 4.9.3 Square junctions
52 - 4.10 JUMP-UPS
53 - 4.11 DISCONNECTION AND SEALING
53 - 4.11.1 Disconnection from the sewer
53 - 4.11.2 Sealing
56 - SECTION 5 EXCAVATION BEDDING SUPPORT AND BACKFILLING
56 - 5.1 SCOPE OF SECTION
56 - 5.2 EXCAVATION OF TRENCHES
56 - 5.2.1 Safety
56 - 5.2.2 Trench dimensions
56 - 5.2.3 Over-excavation
56 - 5.2.4 Adjacent to the sewer
56 - 5.2.5 Water-charged ground
56 - 5.2.6 Shoring and underpinning buildings
56 - 5.3 CONCRETE SUPPORT FOR DRAINS
57 - 5.4 BEDDING OF DRAINS
57 - 5.4.1 General
57 - 5.4.2 Materials
57 - 5.4.3 Installation
58 - 5.5 SIDE SUPPORT OVERLAY AND FINAL BACKFILL OVER DRAINS
58 - 5.5.1 Flexible pipes
58 - 5.5.2 Rigid pipes
58 - 5.5.3 Backfill over drains in stable sand
59 - 5.5.4 Final backfill
59 - 5.5.5 Backfill adjacent to inspection shafts and jump-ups
59 - 5.6 DRAINS IN TUNNELS
59 - 5.7 DRAINS IN GRADED BORED HOLES
60 - 5.8 DRAINS IN FILLED, UNSTABLE, OR WATER-CHARGED GROUND
60 - 5.8.1 General
60 - 5.8.2 Support by lintels
60 - 5.8.3 Support by piers
60 - 5.8.4 Support by timbering
61 - 5.8.5 Support by crushed stone or blue metal
61 - 5.8.6 Drains beneath slabs in unstable or filled ground
61 - 5.8.7 Drain in water-charged conditions
62 - 5.9 DRAINS IN LANDSLIP AREAS
62 - 5.9.1 General
62 - 5.9.2 Classification of landslip areas
62 - 5.9.3 Installation requirements
63 - 5.10 DRAINS IN MINE SUBSIDENCE AREAS
63 - 5.10.1 Installation
63 - 5.10.2 Limitation on pipe length and joints
63 - 5.10.3 Mine subsidence joints for UPVC pipes and fittings
64 - 5.11 DRAINS IN EXPANSIVE SOILS
65 - SECTION 6 GENERAL DESIGN REQUIREMENTS FOR SANITARY PLUMBING SYSTEM
65 - 6.1 SCOPE OF SECTION
65 - 6.2 FIXTURE UNIT RATINGS
67 - 6.3 TRAPPING OF FIXTURES AND APPLIANCES
67 - 6.3.1 General
67 - 6.3.2 Water seal
67 - 6.3.3 Location of traps
67 - 6.3.4 Fixture pairs
68 - 6.4 GRADED DISCHARGE PIPES
68 - 6.4.1 Minimum grades
68 - 6.4.2 Connection methods
69 - 6.5 JUNCTIONS IN STACKS
69 - 6.5.1 Types
69 - 6.5.2 Restrictions
69 - 6.5.3 Branches DN 65 or smaller
69 - 6.5.4 Branches DN 80 or larger
69 - 6.5.5 Opposed connections
71 - 6.6 CONNECTIONS NEAR BASE OF STACKS
71 - 6.6.1 Connections to drains or graded pipes
71 - 6.6.2 Connections above base of stack (See Figure 6.5.)
71 - 6.6.3 Connection of stacks to drains or graded pipes
72 - 6.7 VENTS
72 - 6.7.1 Prohibited use
72 - 6.7.2 Minimum grade
72 - 6.7.3 Interconnections
72 - 6.7.4 Termination
75 - 6.7.5 Connection to graded pipes
76 - SECTION 7 FULLY VENTED SYSTEMS AND FULLY VENTED MODIFIED SYSTEMS-DESIGN AND INSTALLATION
76 - 7.1 SCOPE OF SECTION
76 - 7.2 SYSTEM TYPES
76 - 7.2.1 General
76 - 7.2.2 Fully vented system
76 - 7.2.3 Fully vented modified system
76 - 7.3 SIZE OF DISCHARGE PIPES
76 - 7.3.1 General
76 - 7.3.2 Fixture unit loading
76 - 7.3.3 Minimum size
76 - 7.3.4 Limitation on DN 80 pipes
76 - 7.3.5 Oversizing
77 - 7.4 SIZE OF STACKS
79 - 7.5 TRAP VENTS
79 - 7.5.1 Connection for fixtures
79 - 7.5.2 Stack vents serving as trap vents
79 - 7.5.3 Size
80 - 7.5.4 Installation
81 - 7.5.5 Common vent for fixtures
81 - 7.6 BRANCH VENTS
81 - 7.6.1 Size
83 - 7.6.2 Arrangement
83 - 7.6.3 Size changes
83 - 7.7 RELIEF VENTS
83 - 7.7.1 General
83 - 7.7.2 At offsets in stacks
85 - 7.7.3 Connection
85 - 7.7.4 Upper termination
85 - 7.7.5 Size
86 - 7.8 STACK VENTS
86 - 7.8.1 Extension
86 - 7.8.2 Developed length
86 - 7.9 CROSS-RELIEF VENTS
87 - 7.10 HEADER VENTS
87 - 7.10.1 General
87 - 7.10.2 Sizing
89 - 7.11 GROUP VENTS
89 - 7.11.1 General
89 - 7.11.2 Arrangement
89 - 7.11.3 Sizing
89 - 7.11.4 Termination
89 - 7.11.5 Group-vented branches (see Figure 7.10)
92 - 7.12 OFFSETS IN STACKS
92 - 7.12.1 Steep offsets
92 - 7.12.2 Graded offsets
95 - SECTION 8 SINGLE STACK SYSTEMS AND SINGLE STACK MODIFIED SYSTEMS- DESIGN AND INSTALLATION
95 - 8.1 SCOPE OF SECTION
95 - 8.2 SYSTEM DESIGN
95 - 8.2.1 General
95 - 8.2.2 Single stack systems (see Figure 8.1)
95 - 8.2.3 Single stack modified system (see Figure 8.2)
95 - 8.2.4 Design criteria
95 - 8.2.5 Number of floor levels (see Figure 8.3)
96 - 8.3 RATING OF FIXTURES
96 - 8.4 FIXTURES PERMITTED TO BE CONNECTED
96 - 8.4.1 Residential buildings (Classes 1 to 4)
101 - 8.4.2 Commercial buildings (Classes 5 to 9)
102 - 8.5 CONNECTION OF FIXTURES WITHOUT TRAP VENTS
102 - 8.5.1 Separate fixture discharge pipes
102 - 8.5.2 Variations permitted
103 - 8.5.3 Opposed junctions
103 - 8.5.4 Bends in fixture discharge pipes
103 - 8.5.5 Vertical dropper on fixture discharge pipes
103 - 8.5.6 Connection from waste fixtures to stack
104 - 8.5.7 Connection from waste fixtures to stack below restricted zone
104 - 8.5.8 Floor waste gullies
104 - 8.5.9 Traps
104 - 8.5.10 Connection of ranges of fixtures
104 - 8.5.11 Ranges of basins
106 - 8.5.12 Ranges of water closet pans
107 - 8.5.13 Ranges of wall-hung urinals
107 - 8.6 VENTING OF STACKS
107 - 8.6.1 General
107 - 8.6.2 Cross vents (single stack modified system)
108 - 8.6.3 Relief vents (single stack modified system)
108 - 8.7 SIZING OF STACKS
108 - 8.7.1 Single stack systems
108 - 8.7.2 Single stack modified systems
109 - 8.8 VARIATIONS TO SINGLE STACK SYSTEMS
109 - 8.8.1 General
110 - 8.8.2 DN 80 stack
110 - 8.8.3 DN 80 stack with the top section graded installed in a Class 1 to 4 building
111 - 8.8.4 DN 100 stack up to three floors with the top section graded installed in a Class 1 to 4 building receiving 30 fixture units
112 - 8.8.5 DN 100 stack of one floor with top section graded
113 - 8.8.6 Connection for multiple fixtures into or below a graded offset (DN 100 stacks (see Figure 8.11)
113 - 8.8.7 Waste stack up to DN 100 with either graded or steep offset between the highest and lowest connections
116 - 8.8.8 DN 65 waste stack
116 - 8.8.9 DN 50 vertical section of stack
117 - 8.8.10 Connection at the change of direction in stack with top section graded
117 - 8.9 OFFSETS IN SINGLE STACK SYSTEMS ONLY
117 - 8.9.1 General
117 - 8.9.2 Steep offsets
118 - 8.9.3 Connection of laundry troughs to DN 100 stacks
120 - 8.9.4 Steep offsets below the lowest connection
120 - 8.9.5 Graded offsets
120 - 8.9.6 Connections above the offset
123 - SECTION 9 GENERAL INSTALLATION OF PIPEWORK
123 - 9.1 SCOPE OF SECTION
123 - 9.2 SUPPORT AND FIXING OF PIPEWORK
123 - 9.2.1 Brackets, clips and hangers
123 - 9.2.2 Prohibited supports
123 - 9.3 LOCATION
124 - 9.4 CONCEALMENT OF PIPES AND FITTINGS
124 - 9.4.1 General
124 - 9.4.2 Extension of inspection openings
124 - 9.4.3 Structural concrete or brickwork
124 - 9.4.4 Dry wall construction
124 - 9.4.5 Multiple dwellings
124 - 9.4.6 Walk-in pipe ducts
124 - 9.5 TESTING AND INSPECTION OPENINGS
124 - 9.5.1 General requirements
125 - 9.5.2 Inspection opening size
125 - 9.5.3 Access to inspection openings
125 - 9.6 INSTALLATION OF COPPER AND COPPER ALLOY PIPES
125 - 9.6.1 Fixing
125 - 9.6.2 Expansion joints
125 - 9.6.3 Freedom from restraint
127 - 9.7 INSTALLATION OF UPVC PIPES
127 - 9.8 DISUSE OF SANITARY PLUMBING
127 - 9.9 IDENTIFICATION OF PIPES
127 - 9.10 INSTALLATION OF ABOVE-GROUND (ELEVATED) PIPEWORK AND CONNECTION OF FIXTURES USING DRAINAGE PRINCIPLES
127 - 9.10.1 General
127 - 9.10.2 Maximum length and size
127 - 9.10.3 Permitted installations
127 - 9.10.4 Installation
127 - 9.11 INSTALLATION OF BOUNDARY TRAPS, REFLUX VALVES AND GULLIES ABOVE GROUND WITHIN BUILDINGS
127 - 9.11.1 Boundary traps
128 - 9.11.2 Reflux valve
128 - 9.11.3 Gullies
128 - 9.12 JOINTING OF PIPES
128 - 9.12.1 General
128 - 9.12.2 Materials and methods of jointing
131 - SECTION 10 PUMPED DISCHARGE
131 - 10.1 SCOPE OF SECTION
131 - 10.2 GENERAL
131 - 10.3 COMPRESSED AIR EJECTION
131 - 10.4 EJECTOR VENT
131 - 10.5 WET WELLS
131 - 10.5.1 General
131 - 10.5.2 Construction
131 - 10.5.3 Materials
131 - 10.5.4 Base
131 - 10.5.5 Cover
132 - 10.5.6 Ladders
132 - 10.6 INSTALLATION OF PUMPS
132 - 10.6.1 General
132 - 10.6.2 Inlet to wet well
132 - 10.6.3 Venting
132 - 10.6.4 Sealing
132 - 10.7 PUMPED DISCHARGES OR RISING MAINS
132 - 10.8 PUMP DISCHARGE FROM WASTE FIXTURES
132 - 10.8.1 General
133 - 10.8.2 Holding tank
133 - 10.8.3 Provision of valves
133 - 10.8.4 Inlet
133 - 10.8.5 Outlet
133 - 10.8.6 Venting
133 - 10.8.7 Discharge pipe
133 - 10.9 SWIMMING POOL DISCHARGE
133 - 10.10 SMALL BORE MACERATOR SYSTEMS
133 - 10.11 ELECTRICAL CONNECTION
135 - SECTION 1 1 FIXTURES AND APPLIANCES
135 - 11.1 SCOPE OF SECTION
135 - 11.2 INSTALLATION OF FIXTURES FOR DISABLED PERSONS
135 - 11.3 GENERAL INSTALLATION REQUIREMENTS
135 - 11.3.1 Installation of fixtures
135 - 11.3.2 Position of fixture traps
135 - 11.3.3 Untrapped fixtures
135 - 11.3.4 Connection of fixture pairs
135 - 11.3.5 Connection of soil fixtures
135 - 11.3.6 Fixture grates
135 - 11.3.7 Sanitary flushing
135 - 11.3.8 Fixture discharge pipes
135 - 11.4 PLANT ROOMS
135 - 11.5 PRESSURIZED CHAMBERS
136 - 11.6 AUTOPSY TABLES
136 - 11.7 BAIN MARIES AND BOILING WATER UNITS
136 - 11.8 BASINS
136 - 11.9 BATHS
136 - 11.10 BEDPAN WASHERS AND SANITIZERS
136 - 11.11 BIDETS
136 - 11.12 DENTAL UNITS
136 - 11.12.1 Single
136 - 11.12.2 Multiple
136 - 11.13 DRINKING FOUNTAINS
136 - 11.14 FOOD WASTE DISPOSAL UNITS (DOMESTIC TYPE)
136 - 11.14.1 General
136 - 11.14.2 Outlet connection
136 - 11.15 FLOOR WASTE GULLIES
137 - 11.16 REFRIGERATED AND DEEP-FREEZE CABINETS
137 - 11.17 SANITARY NAPKIN DISPOSAL UNITS
137 - 11.18 SHOWERS
137 - 11.18.1 Individual showers
137 - 11.18.2 Shower groups
137 - 11.18.3 Kerbing of shower groups
137 - 11.18.4 Prefabricated shower bases
137 - 11.19 SINKS
137 - 11.19.1 Kitchen sinks
138 - 11.19.2 Bar sinks
138 - 11.19.3 Cleaners' sinks
138 - 11.20 SLOP HOPPERS
138 - 11.20.1 Installation
138 - 11.20.2 Connection
138 - 11.21 INSTRUMENT STERILIZERS AND AUTOCLAVES
138 - 11.22 CONNECTION OF TUNDISHES
138 - 11.23 DOMESTIC SWIMMING POOLS
138 - 11.24 TROUGHS
138 - 11.24.1 Ablution
138 - 11.24.2 Laundry
138 - 11.25 URINALS
138 - 11.25.1 Floor type
139 - 11.25.2 Wall-hung
139 - 11.26 WASHING MACHINES
139 - 11.26.1 Domestic clothes-washing machines
139 - 11.26.2 Domestic dishwashing machines (See Figure 11.1)
139 - 11.26.3 Commercial dishwashing machines
140 - 11.26.4 Glass-washing machines
140 - 11.27 UNTRAPPED FLOOR DRAINS
140 - 11.27.1 General
140 - 11.27.2 Restrictions on use
140 - 11.27.3 Installation
141 - 11.27.4 Termination of discharge pipe
141 - 11.28 WATER CLOSET PANS
141 - 11.28.1 Connection
141 - 11.28.2 Installation
142 - SECTION 12 TESTING OF SANITARY PLUMBING AND SANITARY DRAINAGE INSTALLATIONS
142 - 12.1 SCOPE OF SECTION
142 - 12.2 SANITARY PLUMBING TESTING
142 - 12.3 SANITARY DRAINAGE TESTING
142 - 12.3.1 Water test
143 - 12.3.2 Air test
144 - APPENDIX A - MATERIALS AND PRODUCTS
145 - APPENDIX B - INSTALLATION
146 - APPENDIX C - MISCELLANEOUS
147 - APPENDIX D - CLASSIFICATION OF BUILDINGS AND STRUCTURES
147 - D1 PRINCIPLES OF CLASSIFICATION
147 - D2 CLASSIFICATIONS
148 - D3 MULTIPLE CLASSIFICATION
149 - APPENDIX E - PIPE GRADES CONVERSION TABLE
150 - APPENDIX F - LOCATION, VENTILATION AND OUTLETS OF PRE-TREATMENT FACILITIES
150 - F1 SCOPE
150 - F2 GENERAL
150 - F3 PROHIBITED SUBSTANCES
150 - F4 ARRESTORS AND SPECIAL PITS
151 - F5 VENTS ON GREASE ARRESTORS
151 - F6 GREASE ARRESTOR IN SEPARATE CHAMBER
151 - F7 OUTLETS

Specifies requirements for the installation of sanitary plumbing and sanitary drainage, from the fixtures to the point of connection to the Authority's sewer main, and applies to the design, installation methods and material types permitted. The Standard takes account of the regulations stipulated by the Authorities responsible for the administration of sanitary plumbing and sanitary drainage legislation in each State and Territory of Australia. This Standard applies to new installations as well as alterations, additions and repairs to existing installations.

First published as AS 3500.2-1990.