AS/NZS 3500.3:2018
Plumbing and drainage Part 3: Stormwater drainage
Sets out requirements for materials, design, installation and testing of roof drainage systems, surface drainage systems and subsoil drainage systems to a point of connection.
| Get this standard | Prices exclude GST | |
|---|---|---|
| PDF ( Single user document) |
$117.00 NZD
|
|
| HardCopy |
$130.00 NZD
|
|
| Networkable PDF |
Price varies
|
|
| Online Library ( Annual subscription) |
Info
Price varies
Online Library subscription pricing The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz. |
AS/NZS 3500.3:2018 PLUMBING AND DRAINAGE - STORMWATER DRAINAGE
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.2.1 Australia
1.2.2 New Zealand
1.3 NORMATIVE REFERENCES
1.4 DEFINITIONS
1.4.1 Annual exceedance probability (AEP)
1.4.2 Average recurrence interval (ARI)
1.4.3 Box gutter
1.4.4 Downpipe
1.4.5 External stormwater drainage network
1.4.6 Inert catchment
1.4.7 On-site stormwater detention (OSD)
1.4.8 Overflow device
1.4.9 Overflow measure
1.4.10 Overland flow
1.4.11 Permanent ponding
1.4.12 Point of connection
1.4.13 Rainhead
1.4.14 Roof drain
1.4.15 Sag pit
1.4.16 Site stormwater drain
1.4.17 Spreader
1.4.18 Stormwater
1.4.19 Stormwater drain
1.4.20 Stormwater drainage system
1.4.21 Subsoil drain
1.4.22 Sump
1.4.23 Sump/high capacity overflow device
1.4.24 Sump/side overflow device
1.4.25 Surcharge pit
1.4.26 Surface water drain
1.4.27 Valley gutters
1.5 ABBREVIATIONS
1.5.1 General
1.5.2 Plastics
1.6 NOTATION
1.6.1 Quantity symbols
1.6.2 Flow chart symbols
1.6.3 Gradients
1.7 IDENTIFICATION
SECTION 2 MATERIALS AND PRODUCTS
2.1 SCOPE OF SECTION
2.2 SELECTION AND USE
2.3 ROOF DRAINAGE SYSTEM
2.3.1 Roof drainage system components
2.3.2 Downpipes
2.3.3 Accessories and fasteners
2.4 STORMWATER DRAINS (NON-PRESSURE)
2.5 RISING MAINS (PRESSURE)
2.6 SUBSOIL DRAINS
2.7 JOINTS
2.7.1 Resin adhesives
2.7.2 Types
2.8 VALVES
2.8.1 Gate and globe
2.8.2 Non-return
2.8.3 Sluice
2.8.4 Wedge gate
2.9 CONCRETE AND MORTAR
2.9.1 Concrete
2.9.2 Cement mortar
2.9.3 Chemical admixtures
2.9.4 Water for concrete and mortar
2.9.5 Steel reinforcement
2.10 EMBEDMENT MATERIAL
2.10.1 Site stormwater drains
2.10.2 Subsoil drains
2.11 TRENCH FILL
2.12 MISCELLANEOUS
2.12.1 Clay building bricks
2.12.2 Concrete masonry units
2.12.3 Cover and sump grates
2.12.4 External protective coating
2.12.5 Fibreglass-reinforced plastic tanks
2.12.6 Geotextiles
2.12.7 Polyethylene sleeving
2.12.8 Precast or prefabricated pits and arresters
2.12.9 Timber
2.13 FILTERS FOR SUBSOIL DRAINS
2.13.1 Filter material
2.13.2 Geotextile filters
SECTION 3 ROOF DRAINAGE SYSTEMS-DESIGN
3.1 SCOPE OF SECTION
3.2 GENERAL METHOD
3.3 METEOROLOGICAL CRITERIA
3.3.1 General
3.3.2 Snowfall effects
3.3.3 Wind effects
3.3.4 Design probabilities
3.3.5 Rainfall intensity
3.4 CATCHMENT AREA
3.4.1 General
3.4.2 Three-dimensional representation
3.4.3 Roof
3.4.4 Vertical wall(s) and roof
3.4.5 Higher catchment area
3.4.6 Green, landscaped or garden roofs
3.5 EAVES GUTTER SYSTEMS
3.5.1 General
3.5.2 Design procedure
3.5.3 Vertical downpipes
3.5.4 Effective cross-sectional area of eaves gutters
3.6 VALLEY GUTTERS
3.6.1 Limitations
3.6.2 Design procedure
3.6.3 Effective width
3.7 BOX GUTTER SYSTEMS
3.7.1 General
3.7.2 Freeboard
3.7.3 Limitations
3.7.4 Design procedure
3.7.5 Hydraulic capacity
3.7.6 Layout
3.7.7 Overflow devices
3.7.8 Downpipes
3.8 BALCONY AND TERRACE AREAS
SECTION 4 ROOF DRAINAGE SYSTEMS-INSTALLATION
4.1 SCOPE OF SECTION
4.2 INSTALLATION
4.3 THERMAL VARIATION
4.3.1 General
4.3.2 Expansion joints
4.4 CORROSION
4.4.1 Corrosion due to direct contact
4.4.2 Corrosion due to drainage
4.4.3 Corrosion due to crevices
4.4.4 Corrosion due to chemical incompatibility
4.5 INSTALLATION AND TESTING
4.5.1 Installation
4.5.2 Testing
4.5.3 Eaves gutters
4.5.4 Box gutters
4.5.5 Valley gutters
4.5.6 Downpipes
4.6 OVERFLOW DEVICES
4.7 JOINTS FOR METAL COMPONENTS
4.7.1 General
4.7.2 Type of joints
4.7.3 Aluminium alloys
4.7.4 Aluminium/zinc and aluminium/zinc/magnesium alloy-coated steel
4.7.5 Stainless steel
4.7.6 Zinc and zinc-coated steel
4.8 JOINTS FOR OTHER COMPONENTS
4.9 SUPPORT SYSTEMS
4.9.1 Types
4.9.2 Criteria
4.9.3 Support systems for eaves gutters
4.9.4 Support systems for box gutters
4.9.5 Support systems for valley gutters
4.9.6 Support systems for downpipes
SECTION 5 SURFACE WATER DRAINAGE SYSTEMS-DESIGN
5.1 SCOPE OF SECTION
5.2 DESIGN
5.2.1 Methods
5.2.2 General criteria
5.2.3 Design rainfall intensity
5.3 LAYOUT
5.3.1 General criteria for layouts
5.4 GENERAL METHOD
5.4.1 General
5.4.2 Overland flood path
5.4.3 Average recurrence interval (ARI)
5.4.4 Time of concentration
5.4.5 Rainfall intensity
5.4.6 Run-off coefficients
5.4.7 Catchment area
5.4.8 Determination of design flows
5.4.9 Design of open channels
5.4.10 Design of inlets
5.4.11 Design of pipe drains
5.4.12 Design of surcharge outlets
5.5 NOMINAL METHOD
SECTION 6 SURFACE AND SUBSOIL DRAINAGE SYSTEMS-INSTALLATION
6.1 SCOPE OF SECTION
6.2 GENERAL REQUIREMENTS
6.2.1 Products and joints
6.2.2 Terminology
6.2.3 Trench width
6.2.4 Over-excavation
6.2.5 Cover
6.2.6 Proximity to other services
6.2.7 Shoring and underpinning buildings
6.2.8 Installation near and under buildings
6.2.9 Water-charged ground
6.2.10 Trench fill
6.2.11 Backfilling
6.2.12 Excavation near point of connection
6.2.13 Corrosive areas
6.3 SITE STORMWATER DRAINS
6.3.1 General
6.3.2 Connections to pits and arresters
6.3.3 Minimum diameter
6.3.4 Gradients
6.3.5 Embedment
6.3.6 Cover under buildings
6.3.7 In easements and public places
6.3.8 Disconnection
6.3.9 Testing
6.4 SUBSOIL DRAINS
6.4.1 General
6.4.2 Embedment
SECTION 7 SURFACE WATER AND SUBSOIL DRAINAGE SYSTEMS-ANCILLARIES
7.1 SCOPE OF SECTION
7.2 PAVED SURFACES
7.3 REFLUX VALVES
7.3.1 Purpose
7.3.2 Location
7.3.3 Criteria
7.4 INSPECTION OPENINGS
7.4.1 Location
7.4.2 Size
7.4.3 Access
7.4.4 Plugs or caps
7.5 STORMWATER PITS, INLET PITS AND ARRESTERS
7.5.1 Purpose
7.5.2 Size
7.5.3 Falls across pits
7.5.4 Inlets
7.5.5 Materials and construction
7.6 SURCHARGE OUTLETS
7.7 JUNCTIONS
7.7.1 General
7.7.2 Square junctions
7.8 JUMP-UPS
7.9 ANCHOR BLOCKS
7.10 ON-SITE STORMWATER DETENTION (OSD) SYSTEMS
7.10.1 General criteria
7.10.2 Below ground systems
7.10.3 Materials
SECTION 8 PUMPED SYSTEMS
8.1 SCOPE OF SECTION
8.2 GENERAL REQUIREMENTS
8.3 WET WELLS
8.3.1 General
8.3.2 Construction and materials
8.3.3 Base
8.3.4 Cover
8.3.5 Ladders
8.3.6 Combined effective storage
8.3.7 Alarm
8.3.8 Inlet
8.3.9 Sealing
8.4 PUMPS
8.5 RISING MAINS
8.6 ELECTRICAL CONNECTION
SECTION 9 SITE TESTING
9.1 SCOPE OF SECTION
9.2 DOWNPIPES, SITE STORMWATER DRAINS AND DRAINS WITHIN OR UNDER BUILDINGS
9.3 TEST CRITERIA
9.3.1 Downpipes within buildings
9.3.2 Site stormwater drains, drains within and under buildings and main internal drains
9.3.3 Rising mains
9.4 PROCEDURE
9.4.1 Water test
9.4.2 Air test
SECTION 10 SIPHONIC DRAINAGE SYSTEMS
10.1 SCOPE OF SECTION
10.1.1 General
10.1.2 Design probabilities
10.1.3 Design methods
10.1.4 Materials
10.2 REQUIREMENTS
10.2.1 Freeboard
10.2.2 Balancing
10.2.3 Available head
10.2.4 Calculation of flows at inlets
10.2.5 Minimum pressure in pipes
10.2.6 Minimum velocity
10.2.7 Overflow capacity
10.2.8 Minimum pipe size
APPENDIX A - NORMATIVE REFERENCES
APPENDIX B - SITE-MIXED CONCRETE FOR MINOR WORKS
APPENDIX C - STORMWATER DRAINAGE INSTALLATION PLANS
C1 SCOPE
C2 ROOF PLAN
C2.1 Building with fewer than four floor levels
C2.2 Buildings with four or more floor levels
C3 SITE PLAN
C4 CATCHMENT PLAN
C5 COMPUTATION SHEETS
APPENDIX D - GUIDELINES FOR DETERMINING RAINFALL INTENSITIES
D1 SCOPE
D2 PROCEDURES
D2.1 Australia
D2.2 New Zealand
APPENDIX E - RAINFALL INTENSITIES FOR AUSTRALIA
E1 SCOPE
E2 SELECTED PLACE REFERENCES
APPENDIX F - RAINFALL INTENSITIES FOR NEW ZEALAND—10 MIN DURATION
F1 SCOPE
F2 10 MINUTES DURATION RAINFALL INTENSITIES
APPENDIX G - EXAMPLES OF OVERFLOW MEASURES FOR EAVES GUTTERS
G1 SCOPE
G2 FULL LENGTH (CONTINUOUS) OVERFLOWS
G3 SPECIFICALLY LOCATED OVERFLOWS
APPENDIX H - GENERAL METHOD FOR DESIGN OF EAVES GUTTER SYSTEMS-EXAMPLE
H1 SCOPE
H2 EXAMPLE
H2.1 Problem
H2.2 Case 1-Sloping eaves gutter
H2.3 Case 2-Flat eaves gutter
APPENDIX I - BOX GUTTER SYSTEMS-GENERAL METHOD, DESIGN GRAPHS AND ILLUSTRATIONS
APPENDIX J - BOX GUTTER SYSTEMS-GENERAL METHOD-EXAMPLES
J1 SCOPE
J2 EXAMPLE 1: BOX GUTTERS, RAINHEADS AND DOWNPIPE
J2.1 Problem
J2.2 Calculation
J3 EXAMPLE 2: BOX GUTTERS, SUMP/SIDE OVERFLOW DEVICES AND DOWNPIPES
J3.1 Problem
J3.2 Calculation
J4 EXAMPLE 3: BOX GUTTERS, SUMP/HIGH-CAPACITY OVERFLOW DEVICES AND DOWNPIPES
J4.1 Problem
J4.2 Calculation
APPENDIX K - SURFACE WATER DRAINAGE SYSTEMS-NOMINAL AND GENERAL METHODS-EXAMPLES
K1 SCOPE
K2 EXAMPLE 1: NOMINAL METHOD
K2.1 Problem
K2.2 Solution
K2.3 Stormwater pits
K3 EXAMPLE 2: GENERAL METHOD-VILLA HOME DEVELOPMENT
K3.1 Problem
K3.2 Assumptions
K3.3 Solution
K4 EXAMPLE 3: GENERAL METHOD-WAREHOUSE
K4.1 Problem
K4.2 Assumptions
K4.3 Solution
APPENDIX L - EXAMPLE CALCULATION-PUMPED SYSTEM
APPENDIX M - SUBSOIL DRAINAGE SYSTEMS-DESIGN
M1 SCOPE
M2 PURPOSE
M3 TYPES
M4 LAYOUT
M4.1 General arrangement
M4.2 Drains
M4.3 Specifications-Filters
M5 DESIGN CONSIDERATIONS
M5.1 Drain dimensions and spacings
M5.2 Design of conduits
M5.3 Pipe gradient
APPENDIX N - GENERAL INFORMATION
N1 SCOPE
N2 PROTECTION OF WORKS
N2.1 Roof drainage systems
N2.2 Surface water drainage and subsoil drainage systems
N3 DISCHARGE POINT CRITERIA
N3.1 Position and manner of discharge
N3.2 Stormwater drainage plans
N4 TRANSPORT, HANDLING AND STORAGE
N5 INSPECTION AND CLEANING
N6 ALTERATIONS AND DISCONNECTION
N7 LAYOUT
N7.1 General
N7.2 Influences on layout
N8 SURFACE WATER DRAINAGE SYSTEMS-DESIGN
N8.1 Concentrated discharges to streets
N8.2 Snowfall effects
N9 SUBSOIL DRAINAGE SYSTEMS-DESIGN
N10 EROSION AND SEDIMENT CONTROLS
N11 Other than stable grounds
N12 ABOVE-GROUND SYSTEMS
APPENDIX O - OPERATION OF SIPHONIC ROOF DRAINAGE SYSTEMS
O1 GENERAL
O2 GENERAL DESIGN PROCEDURE FOR SIPHONIC ROOF DRAINAGE SYSTEMS
O2.1 Design procedure
O2.2 Design parameters
O2.3 Components
O2.4 Validation of design-Outline checks
O2.5 Installation
O2.6 Testing and commissioning
O2.7 Maintenance, inspection and cleaning
BIBLIOGRAPHY
Previous versions
Keep me up-to-date
Sign up to receive updates when there are changes to this standard
References
Aluminium and aluminium alloys - Extruded rod, bar, solid and hollow shapes
Buried corrugated metal structures - Part 1: Design methods
Buried corrugated metal structures - Installation
Buried corrugated metal structures - Helically formed sinusoidal pipes
Specifications for rainwater goods, accessories and fasteners - Part 1: Metal shape or sheet rainwater goods, and metal accessories and fasteners
Buried flexible pipelines - Installation: Amendment 1
Gate valves for waterworks purposes - Part 1: Metal seated
Gate valves for waterworks purposes - Part 2: Resilient seated
Plumbing and drainage Part 1: Water services
Oriented PVC (PVC-O) pipes for pressure applications
Masonry units, pavers, flags and segmental retaining wall units - Pavers and flags
Modified PVC (PVC-M) pipes for pressure applications
Related Information
Building Code Compliance Document E1
Ministry: Ministry of Business, Innovation, and Employment - Building Systems Performance (BSP)
Section: AS2
Citation context:AS/NZS 3500.3:2018 PLUMBING AND DRAINAGE - STORMWATER DRAINAGE
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE
1.2 APPLICATION
1.2.1 Australia
1.2.2 New Zealand
1.3 NORMATIVE REFERENCES
1.4 DEFINITIONS
1.4.1 Annual exceedance probability (AEP)
1.4.2 Average recurrence interval (ARI)
1.4.3 Box gutter
1.4.4 Downpipe
1.4.5 External stormwater drainage network
1.4.6 Inert catchment
1.4.7 On-site stormwater detention (OSD)
1.4.8 Overflow device
1.4.9 Overflow measure
1.4.10 Overland flow
1.4.11 Permanent ponding
1.4.12 Point of connection
1.4.13 Rainhead
1.4.14 Roof drain
1.4.15 Sag pit
1.4.16 Site stormwater drain
1.4.17 Spreader
1.4.18 Stormwater
1.4.19 Stormwater drain
1.4.20 Stormwater drainage system
1.4.21 Subsoil drain
1.4.22 Sump
1.4.23 Sump/high capacity overflow device
1.4.24 Sump/side overflow device
1.4.25 Surcharge pit
1.4.26 Surface water drain
1.4.27 Valley gutters
1.5 ABBREVIATIONS
1.5.1 General
1.5.2 Plastics
1.6 NOTATION
1.6.1 Quantity symbols
1.6.2 Flow chart symbols
1.6.3 Gradients
1.7 IDENTIFICATION
SECTION 2 MATERIALS AND PRODUCTS
2.1 SCOPE OF SECTION
2.2 SELECTION AND USE
2.3 ROOF DRAINAGE SYSTEM
2.3.1 Roof drainage system components
2.3.2 Downpipes
2.3.3 Accessories and fasteners
2.4 STORMWATER DRAINS (NON-PRESSURE)
2.5 RISING MAINS (PRESSURE)
2.6 SUBSOIL DRAINS
2.7 JOINTS
2.7.1 Resin adhesives
2.7.2 Types
2.8 VALVES
2.8.1 Gate and globe
2.8.2 Non-return
2.8.3 Sluice
2.8.4 Wedge gate
2.9 CONCRETE AND MORTAR
2.9.1 Concrete
2.9.2 Cement mortar
2.9.3 Chemical admixtures
2.9.4 Water for concrete and mortar
2.9.5 Steel reinforcement
2.10 EMBEDMENT MATERIAL
2.10.1 Site stormwater drains
2.10.2 Subsoil drains
2.11 TRENCH FILL
2.12 MISCELLANEOUS
2.12.1 Clay building bricks
2.12.2 Concrete masonry units
2.12.3 Cover and sump grates
2.12.4 External protective coating
2.12.5 Fibreglass-reinforced plastic tanks
2.12.6 Geotextiles
2.12.7 Polyethylene sleeving
2.12.8 Precast or prefabricated pits and arresters
2.12.9 Timber
2.13 FILTERS FOR SUBSOIL DRAINS
2.13.1 Filter material
2.13.2 Geotextile filters
SECTION 3 ROOF DRAINAGE SYSTEMS-DESIGN
3.1 SCOPE OF SECTION
3.2 GENERAL METHOD
3.3 METEOROLOGICAL CRITERIA
3.3.1 General
3.3.2 Snowfall effects
3.3.3 Wind effects
3.3.4 Design probabilities
3.3.5 Rainfall intensity
3.4 CATCHMENT AREA
3.4.1 General
3.4.2 Three-dimensional representation
3.4.3 Roof
3.4.4 Vertical wall(s) and roof
3.4.5 Higher catchment area
3.4.6 Green, landscaped or garden roofs
3.5 EAVES GUTTER SYSTEMS
3.5.1 General
3.5.2 Design procedure
3.5.3 Vertical downpipes
3.5.4 Effective cross-sectional area of eaves gutters
3.6 VALLEY GUTTERS
3.6.1 Limitations
3.6.2 Design procedure
3.6.3 Effective width
3.7 BOX GUTTER SYSTEMS
3.7.1 General
3.7.2 Freeboard
3.7.3 Limitations
3.7.4 Design procedure
3.7.5 Hydraulic capacity
3.7.6 Layout
3.7.7 Overflow devices
3.7.8 Downpipes
3.8 BALCONY AND TERRACE AREAS
SECTION 4 ROOF DRAINAGE SYSTEMS-INSTALLATION
4.1 SCOPE OF SECTION
4.2 INSTALLATION
4.3 THERMAL VARIATION
4.3.1 General
4.3.2 Expansion joints
4.4 CORROSION
4.4.1 Corrosion due to direct contact
4.4.2 Corrosion due to drainage
4.4.3 Corrosion due to crevices
4.4.4 Corrosion due to chemical incompatibility
4.5 INSTALLATION AND TESTING
4.5.1 Installation
4.5.2 Testing
4.5.3 Eaves gutters
4.5.4 Box gutters
4.5.5 Valley gutters
4.5.6 Downpipes
4.6 OVERFLOW DEVICES
4.7 JOINTS FOR METAL COMPONENTS
4.7.1 General
4.7.2 Type of joints
4.7.3 Aluminium alloys
4.7.4 Aluminium/zinc and aluminium/zinc/magnesium alloy-coated steel
4.7.5 Stainless steel
4.7.6 Zinc and zinc-coated steel
4.8 JOINTS FOR OTHER COMPONENTS
4.9 SUPPORT SYSTEMS
4.9.1 Types
4.9.2 Criteria
4.9.3 Support systems for eaves gutters
4.9.4 Support systems for box gutters
4.9.5 Support systems for valley gutters
4.9.6 Support systems for downpipes
SECTION 5 SURFACE WATER DRAINAGE SYSTEMS-DESIGN
5.1 SCOPE OF SECTION
5.2 DESIGN
5.2.1 Methods
5.2.2 General criteria
5.2.3 Design rainfall intensity
5.3 LAYOUT
5.3.1 General criteria for layouts
5.4 GENERAL METHOD
5.4.1 General
5.4.2 Overland flood path
5.4.3 Average recurrence interval (ARI)
5.4.4 Time of concentration
5.4.5 Rainfall intensity
5.4.6 Run-off coefficients
5.4.7 Catchment area
5.4.8 Determination of design flows
5.4.9 Design of open channels
5.4.10 Design of inlets
5.4.11 Design of pipe drains
5.4.12 Design of surcharge outlets
5.5 NOMINAL METHOD
SECTION 6 SURFACE AND SUBSOIL DRAINAGE SYSTEMS-INSTALLATION
6.1 SCOPE OF SECTION
6.2 GENERAL REQUIREMENTS
6.2.1 Products and joints
6.2.2 Terminology
6.2.3 Trench width
6.2.4 Over-excavation
6.2.5 Cover
6.2.6 Proximity to other services
6.2.7 Shoring and underpinning buildings
6.2.8 Installation near and under buildings
6.2.9 Water-charged ground
6.2.10 Trench fill
6.2.11 Backfilling
6.2.12 Excavation near point of connection
6.2.13 Corrosive areas
6.3 SITE STORMWATER DRAINS
6.3.1 General
6.3.2 Connections to pits and arresters
6.3.3 Minimum diameter
6.3.4 Gradients
6.3.5 Embedment
6.3.6 Cover under buildings
6.3.7 In easements and public places
6.3.8 Disconnection
6.3.9 Testing
6.4 SUBSOIL DRAINS
6.4.1 General
6.4.2 Embedment
SECTION 7 SURFACE WATER AND SUBSOIL DRAINAGE SYSTEMS-ANCILLARIES
7.1 SCOPE OF SECTION
7.2 PAVED SURFACES
7.3 REFLUX VALVES
7.3.1 Purpose
7.3.2 Location
7.3.3 Criteria
7.4 INSPECTION OPENINGS
7.4.1 Location
7.4.2 Size
7.4.3 Access
7.4.4 Plugs or caps
7.5 STORMWATER PITS, INLET PITS AND ARRESTERS
7.5.1 Purpose
7.5.2 Size
7.5.3 Falls across pits
7.5.4 Inlets
7.5.5 Materials and construction
7.6 SURCHARGE OUTLETS
7.7 JUNCTIONS
7.7.1 General
7.7.2 Square junctions
7.8 JUMP-UPS
7.9 ANCHOR BLOCKS
7.10 ON-SITE STORMWATER DETENTION (OSD) SYSTEMS
7.10.1 General criteria
7.10.2 Below ground systems
7.10.3 Materials
SECTION 8 PUMPED SYSTEMS
8.1 SCOPE OF SECTION
8.2 GENERAL REQUIREMENTS
8.3 WET WELLS
8.3.1 General
8.3.2 Construction and materials
8.3.3 Base
8.3.4 Cover
8.3.5 Ladders
8.3.6 Combined effective storage
8.3.7 Alarm
8.3.8 Inlet
8.3.9 Sealing
8.4 PUMPS
8.5 RISING MAINS
8.6 ELECTRICAL CONNECTION
SECTION 9 SITE TESTING
9.1 SCOPE OF SECTION
9.2 DOWNPIPES, SITE STORMWATER DRAINS AND DRAINS WITHIN OR UNDER BUILDINGS
9.3 TEST CRITERIA
9.3.1 Downpipes within buildings
9.3.2 Site stormwater drains, drains within and under buildings and main internal drains
9.3.3 Rising mains
9.4 PROCEDURE
9.4.1 Water test
9.4.2 Air test
SECTION 10 SIPHONIC DRAINAGE SYSTEMS
10.1 SCOPE OF SECTION
10.1.1 General
10.1.2 Design probabilities
10.1.3 Design methods
10.1.4 Materials
10.2 REQUIREMENTS
10.2.1 Freeboard
10.2.2 Balancing
10.2.3 Available head
10.2.4 Calculation of flows at inlets
10.2.5 Minimum pressure in pipes
10.2.6 Minimum velocity
10.2.7 Overflow capacity
10.2.8 Minimum pipe size
APPENDIX A - NORMATIVE REFERENCES
APPENDIX B - SITE-MIXED CONCRETE FOR MINOR WORKS
APPENDIX C - STORMWATER DRAINAGE INSTALLATION PLANS
C1 SCOPE
C2 ROOF PLAN
C2.1 Building with fewer than four floor levels
C2.2 Buildings with four or more floor levels
C3 SITE PLAN
C4 CATCHMENT PLAN
C5 COMPUTATION SHEETS
APPENDIX D - GUIDELINES FOR DETERMINING RAINFALL INTENSITIES
D1 SCOPE
D2 PROCEDURES
D2.1 Australia
D2.2 New Zealand
APPENDIX E - RAINFALL INTENSITIES FOR AUSTRALIA
E1 SCOPE
E2 SELECTED PLACE REFERENCES
APPENDIX F - RAINFALL INTENSITIES FOR NEW ZEALAND—10 MIN DURATION
F1 SCOPE
F2 10 MINUTES DURATION RAINFALL INTENSITIES
APPENDIX G - EXAMPLES OF OVERFLOW MEASURES FOR EAVES GUTTERS
G1 SCOPE
G2 FULL LENGTH (CONTINUOUS) OVERFLOWS
G3 SPECIFICALLY LOCATED OVERFLOWS
APPENDIX H - GENERAL METHOD FOR DESIGN OF EAVES GUTTER SYSTEMS-EXAMPLE
H1 SCOPE
H2 EXAMPLE
H2.1 Problem
H2.2 Case 1-Sloping eaves gutter
H2.3 Case 2-Flat eaves gutter
APPENDIX I - BOX GUTTER SYSTEMS-GENERAL METHOD, DESIGN GRAPHS AND ILLUSTRATIONS
APPENDIX J - BOX GUTTER SYSTEMS-GENERAL METHOD-EXAMPLES
J1 SCOPE
J2 EXAMPLE 1: BOX GUTTERS, RAINHEADS AND DOWNPIPE
J2.1 Problem
J2.2 Calculation
J3 EXAMPLE 2: BOX GUTTERS, SUMP/SIDE OVERFLOW DEVICES AND DOWNPIPES
J3.1 Problem
J3.2 Calculation
J4 EXAMPLE 3: BOX GUTTERS, SUMP/HIGH-CAPACITY OVERFLOW DEVICES AND DOWNPIPES
J4.1 Problem
J4.2 Calculation
APPENDIX K - SURFACE WATER DRAINAGE SYSTEMS-NOMINAL AND GENERAL METHODS-EXAMPLES
K1 SCOPE
K2 EXAMPLE 1: NOMINAL METHOD
K2.1 Problem
K2.2 Solution
K2.3 Stormwater pits
K3 EXAMPLE 2: GENERAL METHOD-VILLA HOME DEVELOPMENT
K3.1 Problem
K3.2 Assumptions
K3.3 Solution
K4 EXAMPLE 3: GENERAL METHOD-WAREHOUSE
K4.1 Problem
K4.2 Assumptions
K4.3 Solution
APPENDIX L - EXAMPLE CALCULATION-PUMPED SYSTEM
APPENDIX M - SUBSOIL DRAINAGE SYSTEMS-DESIGN
M1 SCOPE
M2 PURPOSE
M3 TYPES
M4 LAYOUT
M4.1 General arrangement
M4.2 Drains
M4.3 Specifications-Filters
M5 DESIGN CONSIDERATIONS
M5.1 Drain dimensions and spacings
M5.2 Design of conduits
M5.3 Pipe gradient
APPENDIX N - GENERAL INFORMATION
N1 SCOPE
N2 PROTECTION OF WORKS
N2.1 Roof drainage systems
N2.2 Surface water drainage and subsoil drainage systems
N3 DISCHARGE POINT CRITERIA
N3.1 Position and manner of discharge
N3.2 Stormwater drainage plans
N4 TRANSPORT, HANDLING AND STORAGE
N5 INSPECTION AND CLEANING
N6 ALTERATIONS AND DISCONNECTION
N7 LAYOUT
N7.1 General
N7.2 Influences on layout
N8 SURFACE WATER DRAINAGE SYSTEMS-DESIGN
N8.1 Concentrated discharges to streets
N8.2 Snowfall effects
N9 SUBSOIL DRAINAGE SYSTEMS-DESIGN
N10 EROSION AND SEDIMENT CONTROLS
N11 Other than stable grounds
N12 ABOVE-GROUND SYSTEMS
APPENDIX O - OPERATION OF SIPHONIC ROOF DRAINAGE SYSTEMS
O1 GENERAL
O2 GENERAL DESIGN PROCEDURE FOR SIPHONIC ROOF DRAINAGE SYSTEMS
O2.1 Design procedure
O2.2 Design parameters
O2.3 Components
O2.4 Validation of design-Outline checks
O2.5 Installation
O2.6 Testing and commissioning
O2.7 Maintenance, inspection and cleaning
BIBLIOGRAPHY
Previous versions
AS/NZS 3500.3:2018
Online Library subscription pricing
The cost of your subscription will depend on which standards you want to access, and how many people in your organisation need to be able to access the Online Library subscription at the same time (concurrent users). During your subscription period, we are also able to make any necessary changes and ensure you are aware of any pricing changes that result. For a quote, contact our Online Library team by emailing onlinelibrary@standards.govt.nz.