AS/NZS 3500.2:2003
Warning: Superseded Standard. This document has been replaced by:
AS/NZS 3500.2:2015Plumbing and drainage - Sanitary plumbing and drainage
This Standard specifies the requirements for the design and installation of sanitary plumbing and drainage from the fixtures to a sewer, common effluent system or an on-site wastewater management system, as appropriate. The Standard applies to new installations as well as alterations, additions or repairs to existing installations. Illustrations used in this Standard are diagrammatic only and have been chosen without prejudice. NOTE: The pre-treatment of trade wastes is not specified in this Standard.
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AS/NZS 3500.2:2003 PLUMBING AND DRAINAGE - SANITARY PLUMBING AND DRAINAGE
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE AND APPLICATION
1.1.1 Scope
1.1.2 Application
1.2 NORMATIVE REFERENCES
1.3 DEFINITIONS
1.3.1 Pressure attenuator
1.4 PLASTICS ABBREVIATIONS
1.5 MEASUREMENT OF PIPE LENGTH
1.6 PIPE GRADES
1.7 EQUIVALENT PIPE SIZES
SECTION 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 THE USE OF PIPES AND FITTINGS
2.4.1 General limitations
2.4.2 Metallic pipes and fittings
2.4.3 Fabricated metallic pipes and fittings
2.4.4 Plastics pipes and fittings
2.4.5 Other materials-Pipes and fittings
2.4.6 Pipes and fittings for pressure applications
2.5 SHEET MATERIALS
2.5.1 Copper
2.5.2 Stainless steel
2.6 JOINTS
2.6.1 Flanged joints
2.6.2 Elastomeric seals
2.6.3 Silver brazing alloy
2.6.4 Filler rods for stainless steel joints
2.6.5 Plastics
2.7 CONCRETE AND MORTAR
2.7.1 Concrete mix
2.7.2 Cement mortar
2.7.3 Chemical admixtures
2.7.4 Water for concrete and mortar
2.7.5 Steel reinforcement
2.8 MISCELLANEOUS
2.8.1 Timber
2.8.2 Epoxy resins
2.8.3 Pipe bedding
2.8.4 Backfill
2.8.5 External protective coatings
2.8.6 Fibreglass reinforced plastics tanks
2.8.7 Geotextiles
SECTION 3 DRAINAGE DESIGN
3.1 SCOPE OF SECTION
3.2 LOCATION OF DRAINS
3.3 SIZE AND LENGTH OF DRAINS
3.3.1 Fixture unit loading
3.3.2 Main drain
3.3.3 Branch drains
3.3.4 Limitations on vented DN 80 branch drains
3.3.5 Use of eccentric taper fitting
3.3.6 Size change
3.3.7 Downstream of boundary trap
3.3.8 Oversizing of drains
3.3.9 Maximum length of fixture discharge pipes
3.4 GRADES OF DRAINS
3.4.1 Minimum grade
3.4.2 Reduced grades
3.4.3 Steep grades
3.4.4 Anchor blocks
3.5 LAYING OF DRAINS
3.5.1 General
3.5.2 Easements and watercourses
3.6 PROXIMITY TO OTHER SERVICES
3.6.1 General
3.6.2 Separation from above ground electrical conduit, wire, cable, consumer gas or water pipes
3.6.3 Separation from underground electrical supply cables or consumer gas pipes
3.6.4 Separation from underground electrical earthing electrode
3.6.5 Separation from underground communication cable
3.6.6 Separation from other underground services
3.6.7 Crossover of underground services
3.6.8 Clearance from underground obstructions
3.7 DEPTH OF COVER
3.7.1 General
3.7.2 Depth of cover in public areas and private areas
3.7.3 Drains installed with less than minimum cover
3.7.4 Drains under buildings
3.8 BUILDING OVER DRAINS
3.8.1 Alterations and additions to buildings
3.8.2 Installation near and under buildings
3.8.3 Fixture connections to vitrified clay drains under buildings
3.9 VENTING OF DRAINS
3.9.1 General
3.9.2 Location
3.9.3 Size of drainage vents
3.10 UNVENTED BRANCH DRAINS
3.10.1 General
3.10.2 Sizing
3.10.3 Maximum length
3.10.4 Vertical sections
3.10.5 Connection of fixture discharge pipes
3.11 UNVENTED DRAINS DISCHARGING TO GULLIES
3.11.1 General
3.11.2 Length of unvented section
3.12 INLET PIPE TO DISCONNECTOR GULLY
3.13 RESTRICTION ON CONNECTIONS IN PROXIMITY TO A STACK
3.14 CONNECTION OF BASEMENT FIXTURES
3.15 CONNECTIONS IN FLOOD-PRONE AREAS
3.15.1 Inlet above flood level
3.15.2 Inlet below flood level
3.16 RE-USE OF EXISTING SANITARY DRAINS
3.17 DRAINS IN CARAVAN PARKS
3.17.1 General
3.17.2 Soil waste dump points
3.17.3 Connection points for short-term sites
3.17.4 Relocatable dwellings located on long-term sites
3.18 VACUUM SYSTEMS
3.19 COMMON EFFLUENT DRAINAGE SYSTEM
3.19.1 General
3.19.2 Drainage connections
3.19.3 Septic tanks
3.19.4 Sullage tanks
3.20 ON-SITE WASTEWATER TREATMENT UNITS
SECTION 4 DRAINAGE SYSTEM
4.1 SCOPE OF SECTION
4.2 POINT OF CONNECTION
4.2.1 General
4.2.2 Protection of sewers
4.2.3 Tidal or water-charged locations
4.3 DRAINS
4.3.1 Below ground
4.3.2 Above ground under buildings
4.3.3 Changes of direction
4.3.4 Maximum length of fixture discharge pipes
4.4 INSPECTION SHAFTS AND BOUNDARY TRAPS
4.4.1 General
4.4.2 Inspection shafts and boundary trap risers
4.4.3 Installation of inspection shafts
4.4.4 Installation of boundary traps
4.5 REFLUX VALVES
4.5.1 Location
4.5.2 Installation
4.5.3 Surcharging sewer
4.5.4 Reflux valve chambers
4.6 GULLIES
4.6.1 General
4.6.2 Installation
4.6.3 Maintenance of water seal
4.6.4 Prohibited discharge
4.6.5 Disconnector gullies inside buildings
4.6.6 Overflow relief gullies
4.6.7 Floor waste gullies
4.6.8 Charging floor waste gullies
4.7 INSPECTION OPENINGS (IO)
4.7.1 Location
4.7.2 Size
4.7.3 Types
4.7.4 Access to inspection openings
4.7.5 Sealing
4.8 INSPECTION CHAMBERS
4.8.1 General
4.8.2 Size
4.8.3 Prefabricated chambers
4.8.4 Construction
4.8.5 Differential settlement
4.9 JUNCTIONS IN DRAINS
4.9.1 Drains installed at grade
4.9.2 Junctions installed other than on grade
4.9.3 Junctions installed in vertical plane
4.9.4 Square junctions
4.9.5 Junctions for stacks connected to below-ground drainage
4.10 JUMP-UPS
4.11 DISCONNECTION AND SEALING
4.11.1 Disconnection from the sewer
4.11.2 Sealing
SECTION 5 EXCAVATION BEDDING SUPPORT AND BACKFILLING
5.1 SCOPE OF SECTION
5.2 EXCAVATION OF TRENCHES
5.2.1 Safety
5.2.2 Trench dimensions
5.2.3 Over-excavation
5.2.4 Adjacent to the sewer
5.2.5 Water-charged ground
5.2.6 Shoring and underpinning buildings
5.3 CONCRETE SUPPORT FOR DRAINS
5.4 BEDDING OF DRAINS
5.4.1 General
5.4.2 Bedding materials
5.4.3 Pipe side support and overlay materials
5.4.4 Bedding and backfill
5.4.5 Minimum cover
5.5 INSTALLATION OF BACKFILL MATERIALS
5.5.1 General
5.5.2 Builder's waste
5.5.3 Excavated material
5.6 DRAINS IN OTHER THAN STABLE GROUND
SECTION 6 GENERAL DESIGN REQUIREMENTS FOR SANITARY PLUMBING SYSTEMS
6.1 SCOPE OF SECTION
6.2 FIXTURE UNIT RATINGS
6.3 VENTING FOR FIXTURES
6.4 TRAPPING OF FIXTURES AND APPLIANCES
6.4.1 General
6.4.2 Water seal
6.4.3 Location of traps and self-sealing devices
6.4.4 Multiple outlets
6.5 GRADED DISCHARGE PIPES
6.5.1 Minimum grades
6.5.2 Connection methods
6.6 JUNCTIONS IN STACKS
6.6.1 Types
6.6.2 Restrictions for square and ball junctions
6.6.3 'Text deleted'
6.6.4 'Text deleted
6.6.5 Opposed connections
6.7 CONNECTIONS NEAR BASE OF STACKS
6.7.1 Connections to drains or graded pipes
6.7.2 Connections above base of stack (see Figure 6.4)
6.7.3 Connection of stacks to graded pipes or drains above ground
6.7.4 Bends at the base of stacks
6.8 VENTS
6.8.1 Prohibited use
6.8.2 Minimum grade
6.8.3 Interconnections
6.8.4 Termination
6.8.5 Connection to graded pipes
6.9 AIR ADMITTANCE VALVES
6.9.1 Air admittance valves
6.9.2 Requirements for use
6.9.3 Location
6.9.4 Installation
6.10 PRESSURE ATTENUATORS
6.10.1 General
6.10.2 Installation of pressure attenuators
6.10.3 Location
6A.1 SCOPE OF SECTION
6A.2 GENERAL
6A.3 MATERIAL AND PRODUCTS
6A.4 INSTALLATION REQUIREMENTS
6A.4.1 Installation
SECTION 7 FULLY VENTED SYSTEMS AND FULLY VENTED MODIFIED SYSTEMS-DESIGN AND INSTALLATION
7.1 SCOPE OF SECTION
7.2 SYSTEM TYPES
7.2.1 General
7.2.2 Fully vented system
7.2.3 Fully vented modified system
7.3 SIZE OF DISCHARGE PIPES
7.3.1 General
7.3.2 Fixture unit loading
7.3.3 Minimum size
7.3.4 Limitation on DN 80 pipes
7.3.5 Oversizing
7.4 SIZE OF STACKS
7.5 VENTING
7.5.1 Trap vents
7.5.2 Branch vents
7.5.3 Relief vents
7.5.4 Stack vents
7.5.5 Cross-relief vents
7.5.6 Header vents
7.5.7 Group and common vents
7.6 OFFSETS IN STACKS
7.6.1 Steep offsets
7.6.2 Graded offsets
SECTION 8 SINGLE STACK SYSTEMS AND SINGLE STACK MODIFIED SYSTEMS-DESIGN AND INSTALLATION
8.1 SCOPE OF SECTION
8.2 SYSTEM DESIGN
8.2.1 General
8.2.2 Single stack systems (see Figure 8.1)
8.2.3 Single stack modified system (see Figure 8.2)
8.2.4 Design requirements
8.2.5 Number of floor levels (see Figure 8.3)
8.3 RATING OF FIXTURES
8.4 FIXTURES PERMITTED TO BE CONNECTED
8.4.1 Domestic or residential buildings
8.4.2 Commercial or industrial buildings
8.5 CONNECTION OF FIXTURES WITHOUT TRAP VENTS
8.5.1 Separate fixture discharge pipes
8.5.2 Permitted variations
8.5.3 Opposed junctions
8.5.4 Bends in fixture discharge pipes
8.5.5 Vertical dropper on fixture discharge pipes
8.5.6 Connection from waste fixtures to stack
8.5.7 Connection from waste fixtures to stack below restricted zone
8.5.8 Floor waste gullies
8.5.9 Traps
8.5.10 Connection of ranges of fixtures
8.5.11 Ranges of basins
8.5.12 Ranges of water closet pans
8.5.13 Ranges of wall-hung urinals
8.6 VENTING OF STACKS
8.6.1 General
8.6.2 Cross-vents (single stack modified system)
8.6.3 Relief vents (single stack modified system)
8.7 SIZING OF STACKS
8.7.1 Single stack systems
8.7.2 Single stack modified systems
8.8 VARIATIONS TO SINGLE STACK SYSTEMS
8.8.1 General
8.8.2 DN 80 stack
8.8.3 DN 80 stack with the top section graded and installed in a domestic or residential building
8.8.4 DN 100 stack up to three floors with the top section graded and installed in a domestic or residential building...
8.8.5 DN 100 stack of one floor with top section graded
8.8.6 Connection for multiple fixtures into or below a graded offset (DN 100 stacks) (see Figure 8.11)
8.8.7 Waste stack up to DN 100 with either graded or steep offset between the highest and lowest connections
8.8.8 DN 65 waste stack
8.8.9 DN 50 vertical section of stack
8.8.10 Connection at the change of direction in stack with top section graded
8.9 OFFSETS IN SINGLE STACK SYSTEMS ONLY
8.9.1 General
8.9.2 Steep offsets
8.9.3 Connection of laundry troughs to DN 100 stacks
8.9.4 Steep offsets below the lowest connection
8.9.5 Graded offsets
8.9.6 Connections above the offset
SECTION 9 GENERAL INSTALLATION OF PIPEWORK
9.1 SCOPE OF SECTION
9.2 SUPPORT AND FIXING OF PIPEWORK
9.2.1 Brackets, clips and hangers
9.2.2 Prohibited supports
9.2.3 Holes in framework
9.3 LOCATION
9.4 CONCEALMENT OF PIPES AND FITTINGS
9.4.1 General
9.4.2 Extension of inspection openings
9.4.3 Structural concrete or brickwork
9.4.4 Dry wall construction
9.4.5 Multiple dwellings
9.4.6 Walk-in pipe ducts
9.5 TESTING AND INSPECTION OPENINGS
9.5.1 General requirements
9.5.2 Location of testing and inspection openings
9.5.3 Size of testing and inspection of openings
9.5.4 Access to inspection openings
9.6 INSTALLATION OF COPPER AND COPPER ALLOY PIPES
9.6.1 General
9.6.2 Fixing
9.6.3 Expansion joints
9.6.4 Freedom from restraint
9.7 INSTALLATION OF PVC-U PIPES
9.8 INSTALLATION OF HIGH DENSITY POLYETHYLENE (PE-HD) PIPES
9.9 INSTALLATION OF FRC PIPES
9.10 DISCONNECTION OF SANITARY PLUMBING
9.11 IDENTIFICATION OF PIPES
9.12 INSTALLATION OF ABOVE-GROUND (ELEVATED) PIPEWORK AND CONNECTION OF FIXTURES USING DRAINAGE PRINCIPLES
9.12.1 General
9.12.2 Maximum length and size
9.12.3 Permitted installations
9.12.4 Installation
9.13 INSTALLATION OF BOUNDARY TRAPS, REFLUX VALVES AND GULLIES ABOVE GROUND WITHIN BUILDINGS
9.13.1 Boundary traps
9.13.2 Reflux valves
9.13.3 Gullies
9.14 METHODS OF JOINTING OF PIPES
9.14.1 General
9.14.2 Bolted gland joints (BG)
9.14.3 Rubber ring joints (RR)
9.14.4 Epoxy resin joints (ER)
9.14.5 Cement mortar joints (CM)
9.14.6 Silver brazed joints (SB)
9.14.7 Solvent cement joints (SC)
9.14.8 Threaded joints (TH)
9.14.9 Band clamped sleeve joints (BC)
9.14.10 PE-HD joints
9.14.10 PE-HD joints
SECTION 10 PUMPED DISCHARGE
10.1 SCOPE OF SECTION
10.2 GENERAL
10.3 COMPRESSED AIR EJECTION
10.4 EJECTOR VENT
10.5 WET WELLS
10.5.1 General
10.5.2 Construction
10.5.3 Materials
10.5.4 Base
10.5.5 Cover
10.5.6 Ladders
10.6 INSTALLATION OF PUMPS
10.6.1 General
10.6.2 Inlet to wet well
10.6.3 Venting
10.6.4 Sealing
10.7 PUMPED DISCHARGES OR RISING MAINS
10.8 PUMP DISCHARGE FROM WASTE FIXTURES
10.8.1 General
10.8.2 Holding tank
10.8.3 Provision of valves
10.8.4 Inlet
10.8.5 Outlet size
10.8.6 Venting
10.8.7 Pump discharge pipe
10.9 'Text deleted'
10.10 SMALL BORE MACERATOR PUMPS
10.11 ELECTRICAL CONNECTION
SECTION 11 FIXTURES AND APPLIANCES
11.1 SCOPE OF SECTION
11.2 INSTALLATION OF SANITARY FIXTURES FOR PEOPLE WITH DISABLITY
11.3 GENERAL INSTALLATION REQUIREMENTS
11.3.1 Installation of fixtures
11.3.2 Location of fixture traps or self-sealing devices
11.3.3 Untrapped fixtures
11.3.4 Connection of combination fixtures in pairs
11.3.5 Connection of soil fixtures
11.3.6 Fixture grates
11.3.7 Sanitary flushing
11.3.8 Fixture discharge pipes
11.4 PLANT ROOMS
11.5 PRESSURIZED CHAMBERS
11.6 AUTOPSY TABLES
11.7 BAIN-MARIES AND BOILING WATER UNITS
11.8 BASINS
11.9 BATHS
11.10 BEDPAN WASHERS AND SANITIZERS
11.11 BIDETS
11.12 DENTAL UNITS
11.12.1 Single
11.12.2 Multiple
11.13 DRINKING FOUNTAINS
11.14 FOOD WASTE DISPOSAL UNITS (DOMESTIC TYPE)
11.15 REFRIGERATED, DEEP-FREEZE CABINETS, COMMERCIAL COFFEE-MAKING MACHINES AND ICE-MAKING MACHINES
11.16 MACERATING SANITARY NAPKIN DISPOSAL UNITS
11.17 SHOWERS
11.17.1 Individual showers
11.17.2 Shower groups
11.17.3 Common channels
11.18 SINKS
11.18.1 Kitchen sinks
11.18.2 Bar sinks
11.18.3 Cleaners' sinks
11.18.4 Pot, utility and laboratory sinks
11.19 SLOP HOPPERS
11.19.1 Connection
11.19.2 Installation
11.20 INSTRUMENT STERILIZERS AND AUTOCLAVES
11.21 CONNECTION OF TUNDISHES
11.22 DOMESTIC SWIMMING POOLS
11.23 TROUGHS
11.23.1 Ablution
11.23.2 Laundry
11.24 URINALS
11.24.1 Slab type
11.24.2 Wall-hung
11.24.3 Conversion to waterless urinals
11.25 WASHING MACHINES
11.25.1 Domestic clothes-washing machines
11.25.2 Domestic dishwashing machines
11.25.3 Commercial clothes-washing machines
11.25.4 Commercial dishwashing machines
11.25.5 Glass-washing machines
11.26 UNTRAPPED FLOOR DRAINS
11.26.1 General
11.26.2 Restrictions on use
11.26.3 Installation
11.26.4 Termination of discharge pipe
11.27 WATER CLOSET PANS
11.27.1 Connection
11.27.2 Installation
SECTION 12 MULTI-UNIT DEVELOPMENTS
12.1 SCOPE OF SECTION
12.2 METHODS OF DESIGN
12.2.1 General
12.2.2 Maintenance shafts
12.2.3 Inspection shafts and overflow relief gullies and open upstream vents at each individual residential building
SECTION 13 TESTING OF SANITARY PLUMBING AND SANITARY DRAINAGE INSTALLATIONS
13.1 GENERAL
13.2 HYDROSTATIC TEST (WATER TEST)
13.3 AIR PRESSURE TEST
13.3.1 Sealing inlets and outlets
13.3.2 Air pressure test procedure
13.3.3 Maximum pressure drop permitted
13.4 VACUUM TEST
13.4.1 Sealing inlets and outlets
13.4.2 Vacuum test procedure
13.4.3 Maximum vacuum drop permitted
13.5 CLOSED CIRCUIT TELEVISION (CCTV) INSPECTION
APPENDIX A - NORMATIVE REFERENCES
APPENDIX B - PIPE GRADES CONVERSION TABLE
APPENDIX C - ACCEPTABLE PIPES AND FITTINGS
APPENDIX D - MAXIMUM LENGTH (m) OF FIXTURE DISCHARGE PIPE WITHOUT VENTING
APPENDIX E - CONDUCT OF INSPECTIONS BY THE USE OF CLOSED CIRCUIT TELEVISION (CCTV)
E1 GENERAL
E2 OPERATORS REPORT
BIBLIOGRAPHY
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References
- AS/NZS 4999(Int):2003
PVC-U maintenance shafts
Related Information
- 13.060.30 Sewage water disposal and treatment91.140.80 Drainage systems
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AS/NZS 3500.2:2003 PLUMBING AND DRAINAGE - SANITARY PLUMBING AND DRAINAGE
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE AND APPLICATION
1.1.1 Scope
1.1.2 Application
1.2 NORMATIVE REFERENCES
1.3 DEFINITIONS
1.3.1 Pressure attenuator
1.4 PLASTICS ABBREVIATIONS
1.5 MEASUREMENT OF PIPE LENGTH
1.6 PIPE GRADES
1.7 EQUIVALENT PIPE SIZES
SECTION 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 THE USE OF PIPES AND FITTINGS
2.4.1 General limitations
2.4.2 Metallic pipes and fittings
2.4.3 Fabricated metallic pipes and fittings
2.4.4 Plastics pipes and fittings
2.4.5 Other materials-Pipes and fittings
2.4.6 Pipes and fittings for pressure applications
2.5 SHEET MATERIALS
2.5.1 Copper
2.5.2 Stainless steel
2.6 JOINTS
2.6.1 Flanged joints
2.6.2 Elastomeric seals
2.6.3 Silver brazing alloy
2.6.4 Filler rods for stainless steel joints
2.6.5 Plastics
2.7 CONCRETE AND MORTAR
2.7.1 Concrete mix
2.7.2 Cement mortar
2.7.3 Chemical admixtures
2.7.4 Water for concrete and mortar
2.7.5 Steel reinforcement
2.8 MISCELLANEOUS
2.8.1 Timber
2.8.2 Epoxy resins
2.8.3 Pipe bedding
2.8.4 Backfill
2.8.5 External protective coatings
2.8.6 Fibreglass reinforced plastics tanks
2.8.7 Geotextiles
SECTION 3 DRAINAGE DESIGN
3.1 SCOPE OF SECTION
3.2 LOCATION OF DRAINS
3.3 SIZE AND LENGTH OF DRAINS
3.3.1 Fixture unit loading
3.3.2 Main drain
3.3.3 Branch drains
3.3.4 Limitations on vented DN 80 branch drains
3.3.5 Use of eccentric taper fitting
3.3.6 Size change
3.3.7 Downstream of boundary trap
3.3.8 Oversizing of drains
3.3.9 Maximum length of fixture discharge pipes
3.4 GRADES OF DRAINS
3.4.1 Minimum grade
3.4.2 Reduced grades
3.4.3 Steep grades
3.4.4 Anchor blocks
3.5 LAYING OF DRAINS
3.5.1 General
3.5.2 Easements and watercourses
3.6 PROXIMITY TO OTHER SERVICES
3.6.1 General
3.6.2 Separation from above ground electrical conduit, wire, cable, consumer gas or water pipes
3.6.3 Separation from underground electrical supply cables or consumer gas pipes
3.6.4 Separation from underground electrical earthing electrode
3.6.5 Separation from underground communication cable
3.6.6 Separation from other underground services
3.6.7 Crossover of underground services
3.6.8 Clearance from underground obstructions
3.7 DEPTH OF COVER
3.7.1 General
3.7.2 Depth of cover in public areas and private areas
3.7.3 Drains installed with less than minimum cover
3.7.4 Drains under buildings
3.8 BUILDING OVER DRAINS
3.8.1 Alterations and additions to buildings
3.8.2 Installation near and under buildings
3.8.3 Fixture connections to vitrified clay drains under buildings
3.9 VENTING OF DRAINS
3.9.1 General
3.9.2 Location
3.9.3 Size of drainage vents
3.10 UNVENTED BRANCH DRAINS
3.10.1 General
3.10.2 Sizing
3.10.3 Maximum length
3.10.4 Vertical sections
3.10.5 Connection of fixture discharge pipes
3.11 UNVENTED DRAINS DISCHARGING TO GULLIES
3.11.1 General
3.11.2 Length of unvented section
3.12 INLET PIPE TO DISCONNECTOR GULLY
3.13 RESTRICTION ON CONNECTIONS IN PROXIMITY TO A STACK
3.14 CONNECTION OF BASEMENT FIXTURES
3.15 CONNECTIONS IN FLOOD-PRONE AREAS
3.15.1 Inlet above flood level
3.15.2 Inlet below flood level
3.16 RE-USE OF EXISTING SANITARY DRAINS
3.17 DRAINS IN CARAVAN PARKS
3.17.1 General
3.17.2 Soil waste dump points
3.17.3 Connection points for short-term sites
3.17.4 Relocatable dwellings located on long-term sites
3.18 VACUUM SYSTEMS
3.19 COMMON EFFLUENT DRAINAGE SYSTEM
3.19.1 General
3.19.2 Drainage connections
3.19.3 Septic tanks
3.19.4 Sullage tanks
3.20 ON-SITE WASTEWATER TREATMENT UNITS
SECTION 4 DRAINAGE SYSTEM
4.1 SCOPE OF SECTION
4.2 POINT OF CONNECTION
4.2.1 General
4.2.2 Protection of sewers
4.2.3 Tidal or water-charged locations
4.3 DRAINS
4.3.1 Below ground
4.3.2 Above ground under buildings
4.3.3 Changes of direction
4.3.4 Maximum length of fixture discharge pipes
4.4 INSPECTION SHAFTS AND BOUNDARY TRAPS
4.4.1 General
4.4.2 Inspection shafts and boundary trap risers
4.4.3 Installation of inspection shafts
4.4.4 Installation of boundary traps
4.5 REFLUX VALVES
4.5.1 Location
4.5.2 Installation
4.5.3 Surcharging sewer
4.5.4 Reflux valve chambers
4.6 GULLIES
4.6.1 General
4.6.2 Installation
4.6.3 Maintenance of water seal
4.6.4 Prohibited discharge
4.6.5 Disconnector gullies inside buildings
4.6.6 Overflow relief gullies
4.6.7 Floor waste gullies
4.6.8 Charging floor waste gullies
4.7 INSPECTION OPENINGS (IO)
4.7.1 Location
4.7.2 Size
4.7.3 Types
4.7.4 Access to inspection openings
4.7.5 Sealing
4.8 INSPECTION CHAMBERS
4.8.1 General
4.8.2 Size
4.8.3 Prefabricated chambers
4.8.4 Construction
4.8.5 Differential settlement
4.9 JUNCTIONS IN DRAINS
4.9.1 Drains installed at grade
4.9.2 Junctions installed other than on grade
4.9.3 Junctions installed in vertical plane
4.9.4 Square junctions
4.9.5 Junctions for stacks connected to below-ground drainage
4.10 JUMP-UPS
4.11 DISCONNECTION AND SEALING
4.11.1 Disconnection from the sewer
4.11.2 Sealing
SECTION 5 EXCAVATION BEDDING SUPPORT AND BACKFILLING
5.1 SCOPE OF SECTION
5.2 EXCAVATION OF TRENCHES
5.2.1 Safety
5.2.2 Trench dimensions
5.2.3 Over-excavation
5.2.4 Adjacent to the sewer
5.2.5 Water-charged ground
5.2.6 Shoring and underpinning buildings
5.3 CONCRETE SUPPORT FOR DRAINS
5.4 BEDDING OF DRAINS
5.4.1 General
5.4.2 Bedding materials
5.4.3 Pipe side support and overlay materials
5.4.4 Bedding and backfill
5.4.5 Minimum cover
5.5 INSTALLATION OF BACKFILL MATERIALS
5.5.1 General
5.5.2 Builder's waste
5.5.3 Excavated material
5.6 DRAINS IN OTHER THAN STABLE GROUND
SECTION 6 GENERAL DESIGN REQUIREMENTS FOR SANITARY PLUMBING SYSTEMS
6.1 SCOPE OF SECTION
6.2 FIXTURE UNIT RATINGS
6.3 VENTING FOR FIXTURES
6.4 TRAPPING OF FIXTURES AND APPLIANCES
6.4.1 General
6.4.2 Water seal
6.4.3 Location of traps and self-sealing devices
6.4.4 Multiple outlets
6.5 GRADED DISCHARGE PIPES
6.5.1 Minimum grades
6.5.2 Connection methods
6.6 JUNCTIONS IN STACKS
6.6.1 Types
6.6.2 Restrictions for square and ball junctions
6.6.3 'Text deleted'
6.6.4 'Text deleted
6.6.5 Opposed connections
6.7 CONNECTIONS NEAR BASE OF STACKS
6.7.1 Connections to drains or graded pipes
6.7.2 Connections above base of stack (see Figure 6.4)
6.7.3 Connection of stacks to graded pipes or drains above ground
6.7.4 Bends at the base of stacks
6.8 VENTS
6.8.1 Prohibited use
6.8.2 Minimum grade
6.8.3 Interconnections
6.8.4 Termination
6.8.5 Connection to graded pipes
6.9 AIR ADMITTANCE VALVES
6.9.1 Air admittance valves
6.9.2 Requirements for use
6.9.3 Location
6.9.4 Installation
6.10 PRESSURE ATTENUATORS
6.10.1 General
6.10.2 Installation of pressure attenuators
6.10.3 Location
6A.1 SCOPE OF SECTION
6A.2 GENERAL
6A.3 MATERIAL AND PRODUCTS
6A.4 INSTALLATION REQUIREMENTS
6A.4.1 Installation
SECTION 7 FULLY VENTED SYSTEMS AND FULLY VENTED MODIFIED SYSTEMS-DESIGN AND INSTALLATION
7.1 SCOPE OF SECTION
7.2 SYSTEM TYPES
7.2.1 General
7.2.2 Fully vented system
7.2.3 Fully vented modified system
7.3 SIZE OF DISCHARGE PIPES
7.3.1 General
7.3.2 Fixture unit loading
7.3.3 Minimum size
7.3.4 Limitation on DN 80 pipes
7.3.5 Oversizing
7.4 SIZE OF STACKS
7.5 VENTING
7.5.1 Trap vents
7.5.2 Branch vents
7.5.3 Relief vents
7.5.4 Stack vents
7.5.5 Cross-relief vents
7.5.6 Header vents
7.5.7 Group and common vents
7.6 OFFSETS IN STACKS
7.6.1 Steep offsets
7.6.2 Graded offsets
SECTION 8 SINGLE STACK SYSTEMS AND SINGLE STACK MODIFIED SYSTEMS-DESIGN AND INSTALLATION
8.1 SCOPE OF SECTION
8.2 SYSTEM DESIGN
8.2.1 General
8.2.2 Single stack systems (see Figure 8.1)
8.2.3 Single stack modified system (see Figure 8.2)
8.2.4 Design requirements
8.2.5 Number of floor levels (see Figure 8.3)
8.3 RATING OF FIXTURES
8.4 FIXTURES PERMITTED TO BE CONNECTED
8.4.1 Domestic or residential buildings
8.4.2 Commercial or industrial buildings
8.5 CONNECTION OF FIXTURES WITHOUT TRAP VENTS
8.5.1 Separate fixture discharge pipes
8.5.2 Permitted variations
8.5.3 Opposed junctions
8.5.4 Bends in fixture discharge pipes
8.5.5 Vertical dropper on fixture discharge pipes
8.5.6 Connection from waste fixtures to stack
8.5.7 Connection from waste fixtures to stack below restricted zone
8.5.8 Floor waste gullies
8.5.9 Traps
8.5.10 Connection of ranges of fixtures
8.5.11 Ranges of basins
8.5.12 Ranges of water closet pans
8.5.13 Ranges of wall-hung urinals
8.6 VENTING OF STACKS
8.6.1 General
8.6.2 Cross-vents (single stack modified system)
8.6.3 Relief vents (single stack modified system)
8.7 SIZING OF STACKS
8.7.1 Single stack systems
8.7.2 Single stack modified systems
8.8 VARIATIONS TO SINGLE STACK SYSTEMS
8.8.1 General
8.8.2 DN 80 stack
8.8.3 DN 80 stack with the top section graded and installed in a domestic or residential building
8.8.4 DN 100 stack up to three floors with the top section graded and installed in a domestic or residential building...
8.8.5 DN 100 stack of one floor with top section graded
8.8.6 Connection for multiple fixtures into or below a graded offset (DN 100 stacks) (see Figure 8.11)
8.8.7 Waste stack up to DN 100 with either graded or steep offset between the highest and lowest connections
8.8.8 DN 65 waste stack
8.8.9 DN 50 vertical section of stack
8.8.10 Connection at the change of direction in stack with top section graded
8.9 OFFSETS IN SINGLE STACK SYSTEMS ONLY
8.9.1 General
8.9.2 Steep offsets
8.9.3 Connection of laundry troughs to DN 100 stacks
8.9.4 Steep offsets below the lowest connection
8.9.5 Graded offsets
8.9.6 Connections above the offset
SECTION 9 GENERAL INSTALLATION OF PIPEWORK
9.1 SCOPE OF SECTION
9.2 SUPPORT AND FIXING OF PIPEWORK
9.2.1 Brackets, clips and hangers
9.2.2 Prohibited supports
9.2.3 Holes in framework
9.3 LOCATION
9.4 CONCEALMENT OF PIPES AND FITTINGS
9.4.1 General
9.4.2 Extension of inspection openings
9.4.3 Structural concrete or brickwork
9.4.4 Dry wall construction
9.4.5 Multiple dwellings
9.4.6 Walk-in pipe ducts
9.5 TESTING AND INSPECTION OPENINGS
9.5.1 General requirements
9.5.2 Location of testing and inspection openings
9.5.3 Size of testing and inspection of openings
9.5.4 Access to inspection openings
9.6 INSTALLATION OF COPPER AND COPPER ALLOY PIPES
9.6.1 General
9.6.2 Fixing
9.6.3 Expansion joints
9.6.4 Freedom from restraint
9.7 INSTALLATION OF PVC-U PIPES
9.8 INSTALLATION OF HIGH DENSITY POLYETHYLENE (PE-HD) PIPES
9.9 INSTALLATION OF FRC PIPES
9.10 DISCONNECTION OF SANITARY PLUMBING
9.11 IDENTIFICATION OF PIPES
9.12 INSTALLATION OF ABOVE-GROUND (ELEVATED) PIPEWORK AND CONNECTION OF FIXTURES USING DRAINAGE PRINCIPLES
9.12.1 General
9.12.2 Maximum length and size
9.12.3 Permitted installations
9.12.4 Installation
9.13 INSTALLATION OF BOUNDARY TRAPS, REFLUX VALVES AND GULLIES ABOVE GROUND WITHIN BUILDINGS
9.13.1 Boundary traps
9.13.2 Reflux valves
9.13.3 Gullies
9.14 METHODS OF JOINTING OF PIPES
9.14.1 General
9.14.2 Bolted gland joints (BG)
9.14.3 Rubber ring joints (RR)
9.14.4 Epoxy resin joints (ER)
9.14.5 Cement mortar joints (CM)
9.14.6 Silver brazed joints (SB)
9.14.7 Solvent cement joints (SC)
9.14.8 Threaded joints (TH)
9.14.9 Band clamped sleeve joints (BC)
9.14.10 PE-HD joints
9.14.10 PE-HD joints
SECTION 10 PUMPED DISCHARGE
10.1 SCOPE OF SECTION
10.2 GENERAL
10.3 COMPRESSED AIR EJECTION
10.4 EJECTOR VENT
10.5 WET WELLS
10.5.1 General
10.5.2 Construction
10.5.3 Materials
10.5.4 Base
10.5.5 Cover
10.5.6 Ladders
10.6 INSTALLATION OF PUMPS
10.6.1 General
10.6.2 Inlet to wet well
10.6.3 Venting
10.6.4 Sealing
10.7 PUMPED DISCHARGES OR RISING MAINS
10.8 PUMP DISCHARGE FROM WASTE FIXTURES
10.8.1 General
10.8.2 Holding tank
10.8.3 Provision of valves
10.8.4 Inlet
10.8.5 Outlet size
10.8.6 Venting
10.8.7 Pump discharge pipe
10.9 'Text deleted'
10.10 SMALL BORE MACERATOR PUMPS
10.11 ELECTRICAL CONNECTION
SECTION 11 FIXTURES AND APPLIANCES
11.1 SCOPE OF SECTION
11.2 INSTALLATION OF SANITARY FIXTURES FOR PEOPLE WITH DISABLITY
11.3 GENERAL INSTALLATION REQUIREMENTS
11.3.1 Installation of fixtures
11.3.2 Location of fixture traps or self-sealing devices
11.3.3 Untrapped fixtures
11.3.4 Connection of combination fixtures in pairs
11.3.5 Connection of soil fixtures
11.3.6 Fixture grates
11.3.7 Sanitary flushing
11.3.8 Fixture discharge pipes
11.4 PLANT ROOMS
11.5 PRESSURIZED CHAMBERS
11.6 AUTOPSY TABLES
11.7 BAIN-MARIES AND BOILING WATER UNITS
11.8 BASINS
11.9 BATHS
11.10 BEDPAN WASHERS AND SANITIZERS
11.11 BIDETS
11.12 DENTAL UNITS
11.12.1 Single
11.12.2 Multiple
11.13 DRINKING FOUNTAINS
11.14 FOOD WASTE DISPOSAL UNITS (DOMESTIC TYPE)
11.15 REFRIGERATED, DEEP-FREEZE CABINETS, COMMERCIAL COFFEE-MAKING MACHINES AND ICE-MAKING MACHINES
11.16 MACERATING SANITARY NAPKIN DISPOSAL UNITS
11.17 SHOWERS
11.17.1 Individual showers
11.17.2 Shower groups
11.17.3 Common channels
11.18 SINKS
11.18.1 Kitchen sinks
11.18.2 Bar sinks
11.18.3 Cleaners' sinks
11.18.4 Pot, utility and laboratory sinks
11.19 SLOP HOPPERS
11.19.1 Connection
11.19.2 Installation
11.20 INSTRUMENT STERILIZERS AND AUTOCLAVES
11.21 CONNECTION OF TUNDISHES
11.22 DOMESTIC SWIMMING POOLS
11.23 TROUGHS
11.23.1 Ablution
11.23.2 Laundry
11.24 URINALS
11.24.1 Slab type
11.24.2 Wall-hung
11.24.3 Conversion to waterless urinals
11.25 WASHING MACHINES
11.25.1 Domestic clothes-washing machines
11.25.2 Domestic dishwashing machines
11.25.3 Commercial clothes-washing machines
11.25.4 Commercial dishwashing machines
11.25.5 Glass-washing machines
11.26 UNTRAPPED FLOOR DRAINS
11.26.1 General
11.26.2 Restrictions on use
11.26.3 Installation
11.26.4 Termination of discharge pipe
11.27 WATER CLOSET PANS
11.27.1 Connection
11.27.2 Installation
SECTION 12 MULTI-UNIT DEVELOPMENTS
12.1 SCOPE OF SECTION
12.2 METHODS OF DESIGN
12.2.1 General
12.2.2 Maintenance shafts
12.2.3 Inspection shafts and overflow relief gullies and open upstream vents at each individual residential building
SECTION 13 TESTING OF SANITARY PLUMBING AND SANITARY DRAINAGE INSTALLATIONS
13.1 GENERAL
13.2 HYDROSTATIC TEST (WATER TEST)
13.3 AIR PRESSURE TEST
13.3.1 Sealing inlets and outlets
13.3.2 Air pressure test procedure
13.3.3 Maximum pressure drop permitted
13.4 VACUUM TEST
13.4.1 Sealing inlets and outlets
13.4.2 Vacuum test procedure
13.4.3 Maximum vacuum drop permitted
13.5 CLOSED CIRCUIT TELEVISION (CCTV) INSPECTION
APPENDIX A - NORMATIVE REFERENCES
APPENDIX B - PIPE GRADES CONVERSION TABLE
APPENDIX C - ACCEPTABLE PIPES AND FITTINGS
APPENDIX D - MAXIMUM LENGTH (m) OF FIXTURE DISCHARGE PIPE WITHOUT VENTING
APPENDIX E - CONDUCT OF INSPECTIONS BY THE USE OF CLOSED CIRCUIT TELEVISION (CCTV)
E1 GENERAL
E2 OPERATORS REPORT
BIBLIOGRAPHY