AS/NZS 3500.3:2003
Plumbing and drainage - Stormwater drainage
Provides criteria for materials, design, installation and testing of roof drainage systems, surface drainage systems and subsoil drainage systems to a point of connection.
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AS/NZS 3500.3:2003 PLUMBING AND DRAINAGE - STORMWATER DRAINAGE
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE AND APPLICATION
1.1.1 Scope
1.1.2 Application
1.2 REFERENCED DOCUMENTS
1.3 DEFINITIONS
1.3.1 General
1.3.2 Average recurrence interval (ARI)
1.3.3 Box gutter
1.3.4 External stormwater drainage network
1.3.5 Inert catchment
1.3.6 On-site stormwater detention (OSD)
1.3.7 Overflow device
1.3.8 Overflow measure
1.3.9 Permanent ponding
1.3.10 Point of connection
1.3.11 Rainhead
1.3.12 Sag pit
1.3.13 Spreader
1.3.14 Stormwater
1.3.15 Stormwater drainage system
1.3.16 Subsoil drain
1.3.17 Sump
1.3.18 Sump/high capacity overflow device
1.3.19 Sump/side overflow device
1.3.20 Valley gutters
1.3.21 Plastics abbreviations
1.4 NOTATION
1.4.1 Quantity symbols
1.4.2 Flow chart symbols
1.4.3 Gradients
1.5 IDENTIFICATION
1.6 PROTECTION OF WORKS
1.6.1 Roof drainage systems
1.6.2 Surface drainage and subsoil drainage systems
1.7 DISCHARGE POINT CRITERIA
1.7.1 Position and manner of discharge
1.7.2 Stormwater drainage plans
SECTION 2 MATERIALS AND PRODUCTS
2.1 SCOPE OF SECTION
2.2 AUTHORIZATION
2.3 SELECTION AND USE
2.4 ROOF DRAINAGE SYSTEM
2.4.1 Roof drainage system components
2.4.2 Downpipes
2.4.3 Accessories and fasteners
2.5 STORMWATER DRAINS (NON-PRESSURE)
2.6 RISING MAINS (PRESSURE)
2.7 SUBSOIL DRAINS
2.8 JOINTS
2.8.1 Resin adhesives
2.8.2 Types
2.9 VALVES
2.9.1 Gate and globe
2.9.2 Flap
2.9.3 Non-return
2.9.4 Reflux
2.9.5 Sluice
2.9.6 Wedge gate
2.10 CONCRETE AND MORTAR
2.10.1 Concrete
2.10.2 Cement mortar
2.10.3 Chemical admixtures
2.10.4 Water for concrete and mortar
2.10.5 Steel reinforcement
2.11 EMBEDMENT MATERIAL
2.11.1 Site stormwater drains
2.11.2 Subsoil drains
2.12 TRENCH FILL
2.13 MISCELLANEOUS
2.13.1 Clay building bricks
2.13.2 Concrete masonry units
2.13.3 Cover and sump grates
2.13.4 External protective coating
2.13.5 Fibreglass-reinforced plastic tanks
2.13.6 Geotextiles
2.13.7 Polyethylene sleeving
2.13.8 Precast or prefabricated pits and arresters
2.13.9 Timber
2.14 FILTERS FOR SUBSOIL DRAINS
2.14.1 Filter material
2.14.2 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 ARI
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
3.5 EAVES GUTTER SYSTEMS
3.5.1 General
3.5.2 Design procedure
3.5.3 Overflow measures
3.5.4 Vertical downpipes
3.5.5 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 Design procedure
3.7.3 Hydraulic capacity
3.7.4 Layout
3.7.5 Overflow devices
3.7.6 Downpipes
3.8 SOAKERS
SECTION 4 ROOF DRAINAGE SYSTEMS-INSTALLATIONS
4.1 SCOPE OF SECTION
4.2 TRANSPORT, HANDLING AND STORAGE
4.2.1 General
4.2.2 Strippable polymer coating
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 dues to chemical incompatibility
4.5 INSTALLATION AND TESTING
4.5.1 Installation
4.5.2 Testing
4.6 INSPECTION AND CLEANING
4.7 ALTERATIONS AND DISCONNECTION
4.8 EAVES GUTTERS
4.9 BOX GUTTERS
4.10 VALLEY GUTTERS
4.11 DOWNPIPES
4.12 OVERFLOW DEVICES OR MEASURES
4.13 JOINTS FOR METAL COMPONENTS
4.13.1 General
4.13.2 Type of joints
4.13.3 Aluminium alloys
4.13.4 Aluminium/zinc and aluminium/zinc/magnesium alloy-coated steel
4.13.5 Stainless steel
4.13.6 Zinc and zinc-coated steel
4.14 JOINTS FOR PVC COMPONENTS
4.15 JOINTS FOR OTHER COMPONENTS
4.16 SUPPORT SYSTEMS
4.16.1 Types
4.16.2 Criteria
4.16.3 Support systems for eaves gutters
4.16.4 Support systems for box gutters
4.16.5 Support systems for valley gutters
4.16.6 Support systems for downpipes
SECTION 5 SURFACE DRAINAGE SYSTEMS-DESIGN
5.1 SCOPE OF SECTION
5.2 DESIGN METHODS
5.2.1 Methods
5.2.2 General criteria
5.2.3 Design rainfall intensity
5.3 LAYOUT
5.3.1 General
5.3.2 Influences on layout
5.3.3 General criteria for layouts
5.4 GENERAL METHOD
5.4.1 Basis
5.4.2 Overland flood path
5.4.3 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
5.4.13 On-site stormwater detention (OSD) system
5.4.14 Concentrated discharges to streets
5.4.15 Snowfall effects
5.5 NOMINAL METHOD
SECTION 6 SUBSOIL DRAINAGE SYSTEMS-DESIGN
SECTION 7 SURFACE AND SUBSOIL DRAINAGE SYSTEMS-INSTALLATION
7.1 SCOPE OF SECTION
7.2 GENERAL REQUIREMENTS
7.2.1 Products and joints
7.2.2 Erosion and sediment controls
7.2.3 Terminology
7.2.4 Trench width
7.2.5 Over-excavation
7.2.6 Cover
7.2.7 Proximity to other services
7.2.8 Shoring and underpinning buildings
7.2.9 Installation near and under buildings
7.2.10 Water-charged ground
7.2.11 Other than stable grounds
7.2.12 Trench fill
7.2.13 Backfilling
7.2.14 Excavation near point of connection
7.3 SITE STORMWATER DRAINS
7.3.1 Corrosive areas
7.3.2 General
7.3.3 Connections to pits and arresters
7.3.4 Minimum diameter
7.3.5 Gradients
7.3.6 Embedment
7.3.7 Cover under buildings
7.3.8 In easements and public places
7.3.9 Disconnection
7.3.10 Testing
7.4 SUBSOIL DRAINS
7.4.1 General
7.4.2 Embedment
SECTION 8 SURFACE AND SUBSOIL DRAINAGE SYSTEMS-ANCILLARIES
8.1 SCOPE OF SECTION
8.2 PAVED SURFACES
8.3 POINT(S) OF CONNECTION
8.4 REFLUX VALVES
8.4.1 Purpose
8.4.2 Location
8.4.3 Criteria
8.5 INSPECTION OPENINGS
8.5.1 Location
8.5.2 Size
8.5.3 Access
8.5.4 Plugs or caps
8.6 STORMWATER PITS, INLET PITS AND ARRESTERS
8.6.1 Purpose
8.6.2 Size
8.6.3 Falls across pits
8.6.4 Inlets
8.6.5 Materials and construction
8.7 SURCHARGE OUTLETS
8.8 JUNCTIONS
8.8.1 General
8.8.2 Square junctions
8.9 JUMP-UPS
8.10 ANCHOR BLOCKS
8.11 ON-SITE STORMWATER DETENTION (OSD) SYSTEMS
8.11.1 General criteria
8.11.2 Above-ground systems
8.11.3 Below ground systems
8.11.4 Materials
SECTION 9 PUMPED SYSTEMS
9.1 SCOPE OF SECTION
9.2 GENERAL
9.3 WET WELLS
9.3.1 General
9.3.2 Construction and materials
9.3.3 Base
9.3.4 Cover
9.3.5 Ladders
9.3.6 Combined effective storage
9.3.7 Alarm
9.3.8 Inlet
9.3.9 Sealing
9.4 PUMPS
9.5 RISING MAINS
9.6 ELECTRICAL CONNECTION
SECTION 10 SITE TESTING
10.1 SCOPE OF SECTION
10.2 DOWNPIPES, SITE STORMWATER DRAINS AND DRAINS WITHIN OR UNDER BUILDINGS
10.3 TEST CRITERIA
10.3.1 Downpipes within buildings
10.3.2 Site stormwater drains, drains within and under buildings and main-internal drains
10.3.3 Rising mains
10.4 PROCEDURE
10.4.1 Water test
10.4.2 Air test
APPENDIX A - REFERENCED AND RELATED DOCUMENTS
A1 REFERENCED DOCUMENTS
A2 RELATED DOCUMENTS
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- 5 MIN DURATION
E1 SCOPE
E2 SELECTED PLACE REFERENCES
E3 FIVE MINUTES DURATION RAINFALL INTENSITIES
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 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 Specifications- Drains
M4.3 Specifications - Filters
M5 DESIGN CONSIDERATIONS
M5.1 Drain dimensions and spacings
M5.2 Design of conduits
M5.3 Pipe gradient
Amendments
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References
PVC pipes and fittings for stormwater and surface water applications
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AS/NZS 3500.3:2003 PLUMBING AND DRAINAGE - STORMWATER DRAINAGE
PREFACE
CONTENTS
SECTION 1 SCOPE AND GENERAL
1.1 SCOPE AND APPLICATION
1.1.1 Scope
1.1.2 Application
1.2 REFERENCED DOCUMENTS
1.3 DEFINITIONS
1.3.1 General
1.3.2 Average recurrence interval (ARI)
1.3.3 Box gutter
1.3.4 External stormwater drainage network
1.3.5 Inert catchment
1.3.6 On-site stormwater detention (OSD)
1.3.7 Overflow device
1.3.8 Overflow measure
1.3.9 Permanent ponding
1.3.10 Point of connection
1.3.11 Rainhead
1.3.12 Sag pit
1.3.13 Spreader
1.3.14 Stormwater
1.3.15 Stormwater drainage system
1.3.16 Subsoil drain
1.3.17 Sump
1.3.18 Sump/high capacity overflow device
1.3.19 Sump/side overflow device
1.3.20 Valley gutters
1.3.21 Plastics abbreviations
1.4 NOTATION
1.4.1 Quantity symbols
1.4.2 Flow chart symbols
1.4.3 Gradients
1.5 IDENTIFICATION
1.6 PROTECTION OF WORKS
1.6.1 Roof drainage systems
1.6.2 Surface drainage and subsoil drainage systems
1.7 DISCHARGE POINT CRITERIA
1.7.1 Position and manner of discharge
1.7.2 Stormwater drainage plans
SECTION 2 MATERIALS AND PRODUCTS
2.1 SCOPE OF SECTION
2.2 AUTHORIZATION
2.3 SELECTION AND USE
2.4 ROOF DRAINAGE SYSTEM
2.4.1 Roof drainage system components
2.4.2 Downpipes
2.4.3 Accessories and fasteners
2.5 STORMWATER DRAINS (NON-PRESSURE)
2.6 RISING MAINS (PRESSURE)
2.7 SUBSOIL DRAINS
2.8 JOINTS
2.8.1 Resin adhesives
2.8.2 Types
2.9 VALVES
2.9.1 Gate and globe
2.9.2 Flap
2.9.3 Non-return
2.9.4 Reflux
2.9.5 Sluice
2.9.6 Wedge gate
2.10 CONCRETE AND MORTAR
2.10.1 Concrete
2.10.2 Cement mortar
2.10.3 Chemical admixtures
2.10.4 Water for concrete and mortar
2.10.5 Steel reinforcement
2.11 EMBEDMENT MATERIAL
2.11.1 Site stormwater drains
2.11.2 Subsoil drains
2.12 TRENCH FILL
2.13 MISCELLANEOUS
2.13.1 Clay building bricks
2.13.2 Concrete masonry units
2.13.3 Cover and sump grates
2.13.4 External protective coating
2.13.5 Fibreglass-reinforced plastic tanks
2.13.6 Geotextiles
2.13.7 Polyethylene sleeving
2.13.8 Precast or prefabricated pits and arresters
2.13.9 Timber
2.14 FILTERS FOR SUBSOIL DRAINS
2.14.1 Filter material
2.14.2 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 ARI
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
3.5 EAVES GUTTER SYSTEMS
3.5.1 General
3.5.2 Design procedure
3.5.3 Overflow measures
3.5.4 Vertical downpipes
3.5.5 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 Design procedure
3.7.3 Hydraulic capacity
3.7.4 Layout
3.7.5 Overflow devices
3.7.6 Downpipes
3.8 SOAKERS
SECTION 4 ROOF DRAINAGE SYSTEMS-INSTALLATIONS
4.1 SCOPE OF SECTION
4.2 TRANSPORT, HANDLING AND STORAGE
4.2.1 General
4.2.2 Strippable polymer coating
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 dues to chemical incompatibility
4.5 INSTALLATION AND TESTING
4.5.1 Installation
4.5.2 Testing
4.6 INSPECTION AND CLEANING
4.7 ALTERATIONS AND DISCONNECTION
4.8 EAVES GUTTERS
4.9 BOX GUTTERS
4.10 VALLEY GUTTERS
4.11 DOWNPIPES
4.12 OVERFLOW DEVICES OR MEASURES
4.13 JOINTS FOR METAL COMPONENTS
4.13.1 General
4.13.2 Type of joints
4.13.3 Aluminium alloys
4.13.4 Aluminium/zinc and aluminium/zinc/magnesium alloy-coated steel
4.13.5 Stainless steel
4.13.6 Zinc and zinc-coated steel
4.14 JOINTS FOR PVC COMPONENTS
4.15 JOINTS FOR OTHER COMPONENTS
4.16 SUPPORT SYSTEMS
4.16.1 Types
4.16.2 Criteria
4.16.3 Support systems for eaves gutters
4.16.4 Support systems for box gutters
4.16.5 Support systems for valley gutters
4.16.6 Support systems for downpipes
SECTION 5 SURFACE DRAINAGE SYSTEMS-DESIGN
5.1 SCOPE OF SECTION
5.2 DESIGN METHODS
5.2.1 Methods
5.2.2 General criteria
5.2.3 Design rainfall intensity
5.3 LAYOUT
5.3.1 General
5.3.2 Influences on layout
5.3.3 General criteria for layouts
5.4 GENERAL METHOD
5.4.1 Basis
5.4.2 Overland flood path
5.4.3 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
5.4.13 On-site stormwater detention (OSD) system
5.4.14 Concentrated discharges to streets
5.4.15 Snowfall effects
5.5 NOMINAL METHOD
SECTION 6 SUBSOIL DRAINAGE SYSTEMS-DESIGN
SECTION 7 SURFACE AND SUBSOIL DRAINAGE SYSTEMS-INSTALLATION
7.1 SCOPE OF SECTION
7.2 GENERAL REQUIREMENTS
7.2.1 Products and joints
7.2.2 Erosion and sediment controls
7.2.3 Terminology
7.2.4 Trench width
7.2.5 Over-excavation
7.2.6 Cover
7.2.7 Proximity to other services
7.2.8 Shoring and underpinning buildings
7.2.9 Installation near and under buildings
7.2.10 Water-charged ground
7.2.11 Other than stable grounds
7.2.12 Trench fill
7.2.13 Backfilling
7.2.14 Excavation near point of connection
7.3 SITE STORMWATER DRAINS
7.3.1 Corrosive areas
7.3.2 General
7.3.3 Connections to pits and arresters
7.3.4 Minimum diameter
7.3.5 Gradients
7.3.6 Embedment
7.3.7 Cover under buildings
7.3.8 In easements and public places
7.3.9 Disconnection
7.3.10 Testing
7.4 SUBSOIL DRAINS
7.4.1 General
7.4.2 Embedment
SECTION 8 SURFACE AND SUBSOIL DRAINAGE SYSTEMS-ANCILLARIES
8.1 SCOPE OF SECTION
8.2 PAVED SURFACES
8.3 POINT(S) OF CONNECTION
8.4 REFLUX VALVES
8.4.1 Purpose
8.4.2 Location
8.4.3 Criteria
8.5 INSPECTION OPENINGS
8.5.1 Location
8.5.2 Size
8.5.3 Access
8.5.4 Plugs or caps
8.6 STORMWATER PITS, INLET PITS AND ARRESTERS
8.6.1 Purpose
8.6.2 Size
8.6.3 Falls across pits
8.6.4 Inlets
8.6.5 Materials and construction
8.7 SURCHARGE OUTLETS
8.8 JUNCTIONS
8.8.1 General
8.8.2 Square junctions
8.9 JUMP-UPS
8.10 ANCHOR BLOCKS
8.11 ON-SITE STORMWATER DETENTION (OSD) SYSTEMS
8.11.1 General criteria
8.11.2 Above-ground systems
8.11.3 Below ground systems
8.11.4 Materials
SECTION 9 PUMPED SYSTEMS
9.1 SCOPE OF SECTION
9.2 GENERAL
9.3 WET WELLS
9.3.1 General
9.3.2 Construction and materials
9.3.3 Base
9.3.4 Cover
9.3.5 Ladders
9.3.6 Combined effective storage
9.3.7 Alarm
9.3.8 Inlet
9.3.9 Sealing
9.4 PUMPS
9.5 RISING MAINS
9.6 ELECTRICAL CONNECTION
SECTION 10 SITE TESTING
10.1 SCOPE OF SECTION
10.2 DOWNPIPES, SITE STORMWATER DRAINS AND DRAINS WITHIN OR UNDER BUILDINGS
10.3 TEST CRITERIA
10.3.1 Downpipes within buildings
10.3.2 Site stormwater drains, drains within and under buildings and main-internal drains
10.3.3 Rising mains
10.4 PROCEDURE
10.4.1 Water test
10.4.2 Air test
APPENDIX A - REFERENCED AND RELATED DOCUMENTS
A1 REFERENCED DOCUMENTS
A2 RELATED DOCUMENTS
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- 5 MIN DURATION
E1 SCOPE
E2 SELECTED PLACE REFERENCES
E3 FIVE MINUTES DURATION RAINFALL INTENSITIES
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 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 Specifications- Drains
M4.3 Specifications - Filters
M5 DESIGN CONSIDERATIONS
M5.1 Drain dimensions and spacings
M5.2 Design of conduits
M5.3 Pipe gradient
Amendments
Previous versions
AS/NZS 3500.3:2003
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