AS/NZS 1546.1:2008

1 - AS/NZS 1546.1:2008 ON-SITE DOMESTIC WASTEWATER TREATMENT UNITS - PART 1: SEPTIC TANKS
4 - FOREWORD
5 - CONTENTS
7 - 1 GENERAL
7 - 1.1 Objective
7 - 1.2 Scope
7 - 1.2.1 General
7 - 1.2.2 Structural design
8 - 1.3 Interpretation
8 - 1.4 Application
8 - 1.4.1 General
8 - 1.4.2 Conventional designs and materials
8 - 1.4.3 Non-standard materials, installations, or designs
9 - 1.4.4 Operation and Maintenance
9 - 1.5 Legislation
9 - 1.5.1 Australia
9 - 1.5.2 New Zealand
9 - 1.5.2.1 New Zealand Building Code
9 - 1.5.2.2 Resource Management Act
10 - 1.6 Referenced documents
13 - 1.7 Definitions
15 - 1.8 Abbrevations
16 - 2 PERFORMANCE REQUIREMENTS AND PERFORMANCE CRITERIA
16 - 2.1 Scope
16 - 2.2 General
16 - 2.3 Performance requirements
16 - 2.3.1 General
16 - 2.3.2 Septic tank
17 - 2.3.3 Holding tanks and pump wells
17 - 2.3.4 Serviceable life
18 - 2.4 Performance criteria
18 - 2.4.1 Capacities
18 - 2.4.2 Flow path
18 - 2.4.3 Inlet and outlet fittings
18 - 2.4.4 Outlet filters
18 - 2.4.5 Joints
18 - 2.4.6 Partitions
19 - 2.4.7 Access and inspection openings and covers
19 - 2.4.8 Extensions
19 - 2.4.9 Watertightness
19 - 2.4.10 Integrity
20 - 2.4.11 Loading of tanks
20 - 2.4.11.1 General
20 - 2.4.11.2 Integrity during handling or installation
20 - 2.4.11.3 Hydrostatic uplift
20 - 2.4.11.4 Lateral loads
21 - 2.4.11.5 Top loads
23 - 3 GENERAL REQUIRMENTS OF SEPTIC TANKS
23 - 3.1 Scope
23 - 3.2 Design
23 - 3.2.1 Tank
23 - 3.2.2 Anchorage
25 - 3.2.3 Vehicular loads
25 - 3.3 Inlet fittings and outlet fittings
25 - 3.3.1 Design
25 - 3.3.2 Size
25 - 3.3.3 Position of inlet and outlet fittings in tank
25 - 3.3.3.1 Inlet pipe
26 - 3.3.3.2 Inlet and outlet fittings
26 - 3.4 Optional devices
26 - 3.4.1 Partitions
27 - 3.4.2 Outlet filters
27 - 3.4.3 Gas baffle
27 - 3.5 Vents
28 - 3.6 Access and inspection openings and covers
28 - 3.7 Extensions
28 - 3.8 Holding tanks and pump wells
31 - 4 MARKING
31 - 4.1 Minimum information
31 - 4.2 Other components
31 - 4.3 Permanence and visibility
32 - 5 PRECAST CONCRETE STEEL-REINFORCED SEPTIC TANKS ANDPRECAST STEEL-FIBRE REINFORCED SEPTIC TANKS
32 - 5.1 Scope
32 - 5.2 Materials
32 - 5.2.1 Cement
32 - 5.2.2 Aggregate
32 - 5.2.3 Admixture
32 - 5.2.4 Steel reinforcement
32 - 5.2.4.1 Steel bars, fabric and wire
32 - 5.2.4.2 Steel fibre
32 - 5.3 Concrete
32 - 5.3.1 General
32 - 5.3.2 Specification
32 - 5.3.3 Fibre-reinforced concrete
33 - 5.4 Manufacture
33 - 5.4.1 General
33 - 5.4.2 Methods
34 - 5.4.2.1 Cylindrical walls
34 - 5.4.2.2 Tank ends
34 - 5.4.2.3 Steel reinforced tanks
34 - 5.4.2.3.1 Mixing of steel fibre
34 - 5.4.2.3.2 Concrete finish
34 - 5.4.2.3.3 Fibre content
34 - 5.4.3 Thickness of tank components
34 - 5.4.4 Reinforcement
34 - 5.4.4.1 Cover
34 - 5.4.4.2 Corrosion protection
35 - 5.4.4.3 Quality of reinforcement
36 - 5.4.4.4 Lapping of reinforcement
36 - 5.4.4.5 Tank ends
36 - 5.4.5 Provision of fittings, partitions, and their assembly
36 - 5.4.5.1 Inlet and outlet fittings
36 - 5.4.5.2 Partitions
37 - 6 CAST-IN-SITU CONCRETE SEPTIC TANKS
37 - 6.1 Scope
37 - 6.2 Materials
37 - 6.3 Construction
37 - 6.3.1 Floors and walls
37 - 6.3.2 Roof
37 - 6.3.3 Cover to reinforcement
38 - 7 REINFORCEMENT CEMENT MORTAR SEPTIC TANKS
38 - 7.1 Scope
38 - 7.2 Materials and manufacture
39 - 8 GLASS FIBRE-REINFORCED PLASTIC SEPTIC TANKS
39 - 8.1 Scope
39 - 8.2 Performance requirements
39 - 8.2.1 General
39 - 8.2.2 Other requirements
39 - 8.3 Design
39 - 8.3.1 General
40 - 8.3.2 Design basis
40 - 8.4 Materials
40 - 8.4.1 Resin
40 - 8.4.2 Reinforcement
40 - 8.4.2.1 Glass-fibre
40 - 8.4.3 Gelcoats
40 - 8.4.3.1 Polyester
41 - 8.4.3.2 Other Gelcoats
41 - 8.4.4 Fasteners
41 - 8.5 Manufacture
41 - 8.5.1 General
41 - 8.5.2 Laminate and thickness
41 - 8.5.3 Surface finish
41 - 8.5.4 Inlet and outlet holes
42 - 8.5.5 Inlet and outlet fittings
42 - 8.5.6 Partitions
42 - 8.6 Testing
42 - 8.6.1 Type testing
42 - 8.6.1.1 Flexural strength and modulus of elasticity
42 - 8.6.1.2 Impact resistance
42 - 8.6.1.3 Hardness
42 - 8.6.1.4 Water absorption
42 - 8.6.1.5 Glass fibre content
42 - 8.6.1.6 Tensile strength
42 - 8.6.1.7 Tensile elongation
43 - 8.6.2 Routine quality control testing
43 - 8.6.3 Test records
44 - 9 PLASTIC SEPTIC TANKS
44 - 9.1 Scope
44 - 9.2 Performance requirements
44 - 9.2.1 General
44 - 9.2.2 Other requirements
44 - 9.3 Design
44 - 9.3.1 General
45 - 9.3.2 Thickness
45 - 9.4 Materials
45 - 9.4.1 Polymer
45 - 9.4.2 Fasteners
45 - 9.5 Manufacture
45 - 9.5.1 General
45 - 9.5.2 Joints
45 - 9.5.3 Fasteners
45 - 9.5.4 Inlet and outlet fittings
45 - 9.5.5 Partitions
45 - 9.6 Testing
45 - 9.6.1 Routine quality control testing
45 - 9.6.1.1 General
46 - 9.6.1.2 Test specimen
46 - 9.6.1.3 Tests
46 - 9.6.1.4 Test reports
47 - APPENDIX A - DEMONSTRATING COMPLIANCE WITH THIS STANDARD
47 - A1 SCOPE
47 - A2 RELAVANCE
47 - A3 PRODUCT CERTIFICATION
47 - A4 DEFINITIONS
47 - A4.1 Batch release test
47 - A4.2 Production batch
47 - A4.3 Sample
47 - A4.4 Sampling plan
47 - A4.5 Test batch
47 - A4.6 Type testing
48 - A5 TESTING
48 - A5.1 Type testing
48 - A5.2 Batch release testing
48 - A5.3 Retesting
52 - APPENDIX B - INSTALLATION OF SEPTIC TANKS
52 - B1 SCOPE
52 - B2 GENERAL
52 - B2.1 Siting of tanks
52 - B2.2 Soil
52 - B2.3 Surface water
52 - B2.4 Access
52 - B2.5 Drainage
52 - B2.6 Desludging
52 - B3 INSTALLATION INSTUCTIONS
52 - B3.1 General
53 - B3.2 Councils
53 - B3.3 Manufacturer
53 - B3.4 Repairs
54 - APPENDIX C - SEPTIC TANK CAPACITIES
54 - C1 SCOPE
54 - C2 APPLICATION AND USE
54 - C2.1 Application
54 - C2.1 Use
54 - C3 SEPTIC TANKS
55 - APPENDIX D - OUTLET FILTERS
55 - D1 SCOPE
55 - D2 APPLICATION AND USE
55 - D1 OUTLET FILTER REQUIRMENTS
55 - D3.1 Durability
55 - D3.2 Construction and operation details
55 - D3.3 Installation
55 - D3.3.1 Filters intergral with the tank
55 - D3.3.2 Filters external to the tank
56 - D3.3.3 Filters retrofitted to an existing septic tank
56 - D3.4 Access
56 - D4 OPERATION AND MAINTENANCE SERVICING
57 - APPENDIX E - TEST OF MANUFACTURER'S INSTRUCTIONS FOR THE INSTALLATION OF FITTINGS IN A SOUND AND WATERTIGHT MANNER
57 - E1 SCOPE
57 - E2 PRINCIPLE
57 - E3 TESTING
57 - E3.1 Procedure
57 - E3.2 Test criteria
57 - E4 TEST RECORDS
58 - APPENDIX F - DETERMINATION OF THE RESISTANCE OF A PARTITION TO A HYDROSTATIC HEAD (PUMPOUT TEST)
58 - F1 SCOPE
58 - F2 PRINCIPLES
58 - F3 TESTING
58 - F4 TEST RECORDS
59 - APPENDIX G - DETERMINATION OF WATERTIGHTNESS
59 - G1 SCOPE
59 - G2 PRINCIPLES
59 - G3 TESTING OF TANKS CAST-IN-SITU
59 - G3.1 Testing procedure
59 - G3.2 Test criteria
59 - G4 TESTING OF FACTORY-BUILT TANKS
59 - G4.1 Set-up and test procedure
60 - G4.2 Test criteria
60 - G5 REPAIR
60 - G6 TEST RECORDS
62 - APPENDIX H - DETERMINATION OF RESISTANCE TO LATERAL LOAD-HYDRAULIC TEST METHOD
62 - H1 SCOPE
62 - H2 PRINCIPLE
62 - H3 APPARATUS
62 - H4 TEST PROCEDURE
63 - H5 ASSESSMENT
63 - H6 TEST RECORDS
64 - APPENDIX J - DETERMINATION OF RESISTANCE TO LATERAL LOAD-POINT LOAD TEST METHOD
64 - J1 SCOPE
64 - J2 PRINCIPLE
64 - J3 APPARATUS
65 - J4 TEST PROCEDURE
65 - J4.1 Establish test loads
65 - J4.2 Testing of empty septic tank
66 - J4.3 Testing of tank filled with water
66 - J5 ASSESSMENT
66 - J6 TEST RECORDS
67 - APPENDIX K - DETERMINATION OF RESISTANCE TO TOP LOADING
67 - K1 SCOPE
67 - K2 PRINCIPLE
67 - K3 APPARATUS
67 - K4 TEST PROCEDURE
67 - K4.1 General
67 - K4.2 Load application
68 - K5 ASSESSMENT
68 - K6 TEST RECORDS
70 - APPENDIX L - DETERMINATION OF THE HARDNESS OF GLASS FIBRE-REINFORCED PLASTIC COMPOSITES
70 - L1 GENERAL
70 - L2 PRINCIPLE
70 - L3 APPARATUS
70 - L4 TEST SPECIMENS
70 - L5 TEST PROCEDURE
70 - L6 TEST RECORDS
71 - APPENDIX M - DETERMINATION OF THE IMPACT RESISTANCE OF INJECTION MOULDED SEPTIC TANKS
71 - M1 SCOPE
71 - M2 PRINCIPLE
71 - M3 APPARATUS
71 - M4 TEST PROCEDURE
71 - M5 TEST CRITERIA
72 - M6 TEST RECORDS
73 - APPENDIX N - LOW TEMPERATURE IMPACT TEST FOR ROTATIONALLY MOULDED SEPTIC TANKS
73 - N1 SCOPE
73 - N2 PRINCIPLE
73 - N3 RELEVANCE
73 - N4 DEFINITIONS
73 - N4.1 Brittle failure
73 - N4.2 Ductile failure
73 - N4.3 Drop height
73 - N5 CONDITIONING
73 - N6 TEST PROCEDURE
73 - N6.1 Test specimen
74 - N6.2 Test procedure
74 - N7 REPORT

AS/NZS1546.1 specifies performance requirements and performance criteria for septic tanks, technical means of compliance and provides test specifications that enable septic tanks to be manufactured to comply with the performance requirements and performance criteria.

Originated in Australia as AS A178-1968.
Final Australian edition AS 1546-1990.
Originated in New Zealand as NZSS 758:1961.
Final New Zealand edition NZS 4610:1982.
AS 1546-1990 and NZS 4610:1982 jointly revised, amalgamated and redesignated AS/NZS 1546.1:1998.
Revised and reissued as AS/NZS 1546.1:2008.