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AS/NZS 1546.1:1998

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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On-site domestic wastewater treatment units - Septic tanks

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

24-06-2021

Superseded by

AS/NZS 1546.1:2008

Language(s)

English

Published date

01-01-1998

€100.07
Excluding VAT

1 - AS/NZS 1546.1:1998 ON-SITE DOMESTIC WASTEWATER TREATMENT UNITS - SEPTIC TANKS
4 - PREFACE
5 - CONTENTS
8 - 1 GENERAL
8 - 1.1 Objective
8 - 1.2 Scope
8 - 1.3 Application
8 - 1.3.1 General
8 - 1.3.2 Conventional designs and materials
9 - 1.3.3 Non-standard materials, installations or designs
9 - 1.3.4 Operation and maintenance
9 - 1.4 Legislation
9 - 1.4.1
9 - 1.4.2 Australia
9 - 1.4.3 New Zealand
9 - 1.5 Referenced documents
9 - 1.6 Definitions
12 - 2 PERFORMANCE REQUIREMENTS AND PERFORMANCE CRITERIA
12 - 2.1 Scope
12 - 2.2 Function and context of use
12 - 2.2.1 Function
12 - 2.2.2 Context of use
12 - 2.3 Performance requirements
12 - 2.3.1 General
12 - 2.3.2 Septic tanks
13 - 2.3.3 Serviceable Life
13 - 2.4 Performance criteria
13 - 2.4.1 Capacities
14 - 2.4.2 Flow path
14 - 2.4.3 Inlet fittings and outlet fittings
14 - 2.4.4 Joints
14 - 2.4.5 Partitions
14 - 2.4.6 Access openings and covers
15 - 2.4.7 Inspection openings and covers
15 - 2.4.8 Extensions
15 - 2.4.9 Watertightness
15 - 2.4.10 Integrity
16 - 2.4.11 Loads on tanks
18 - 3 GENERAL REQUIREMENTS OF CONVENTIONAL SEPTIC TANKS
18 - 3.1 Scope
18 - 3.2 Septic tank capacities
18 - 3.3 Materials durability
18 - 3.4 Design
18 - 3.4.1 Tank
18 - 3.4.2 Tank chambers
18 - 3.4.3 Handling and transport
18 - 3.4.4 Anchorage
18 - 3.4.5 Vehicular loads
18 - 3.5 Inlet fittings and outlet fittings
18 - 3.5.1 Performance
19 - 3.5.2 Design
20 - 3.6 Position of inlet and outlet fittings in tank
20 - 3.6.1 Inlet pipe
20 - 3.6.2 Inlet and outlet fittings
20 - 3.7 Gas baffles
20 - 3.8 Partitions
21 - 3.9 Vents
21 - 3.10 Access openings and covers
21 - 3.11 Extensions
21 - 3.11.1 Performance
21 - 3.11.2 Installation
21 - 3.12 Marking
21 - 3.13 Installation
26 - 4 MARKING OF SEPTIC TANKS
26 - 4.1 Scope
26 - 4.2 General
26 - 4.3 Requirements
26 - 4.3.1 Minimum information
26 - 4.3.2 Other components
26 - 4.3.3 Permanence and visibility
27 - 5.1 Scope
27 - 5 TESTING REQUIREMENTS OF SEPTIC TANKS
27 - 5.1 Scope
27 - 5.2 Type testing
27 - 5.3 Routine quality testing
27 - 5.4 Quality certification
28 - 6 PRECAST CONCRETE STEEL REINFORCED SEPTIC TANKS AND PRECAST.. PRECAST CONCRETE STEEL FIBRE REINFORCED SEPTIC TANKS
28 - 6.1 Scope
28 - 6.1.1 General
28 - 6.2 Materials
28 - 6.2.1 Cement
28 - 6.2.2 Aggregate
28 - 6.2.3 Admixtures
28 - 6.2.4 Steel reinforcement
28 - 6.3 Concrete
28 - 6.3.1 General
28 - 6.3.2 Specification
28 - 6.3.3 Fibre reinforced concrete
29 - 6.4 Testing
29 - 6.4.1 Type testing
29 - 6.4.2 Routine quality control testing
29 - 6.5 Manufacture
30 - 6.5.1 Methods
31 - 6.6 Thickness of tank components
32 - 6.7 Reinforcement
32 - 6.7.1 Cover
32 - 6.7.2 Corrosion protection
32 - 6.7.3 Quantity of reinforcement
33 - 6.7.4 Lapping of reinforcement
33 - 6.8 Provision of fittings, partitions and their assembly
33 - 6.8.1 Inlet and outlet fittings
33 - 6.8.2 Partitions
34 - 7 CAST-IN-SITU CONCRETE SEPTIC TANKS
34 - 7.1 Scope
34 - 7.2 Performance
34 - 7.3 Materials
34 - 7.3.1 General
34 - 7.3.2
34 - 7.3.3
34 - 7.4 Design
34 - 7.4.1 Thickness, reinforcement and strength of concrete
34 - 7.5 Marking
35 - 8 REINFORCED CEMENT MORTAR SEPTIC TANKS
35 - 8.1 Scope and general
35 - 8.1.1 Scope
35 - 8.1.2 General
35 - 8.2 Performance
35 - 8.3 Manufacture
36 - 9 GLASS FIBRE-REINFORCED PLASTIC SEPTIC TANKS
36 - 9.1 Scope
36 - 9.2 Performance requirements
36 - 9.2.1 General
36 - 9.2.2
36 - 9.2.3 Other requirements
36 - 9.3 Design
36 - 9.3.1 General
37 - 9.3.2 Design basis
37 - 9.3.3 Anchorage
37 - 9.4 Manufacture
37 - 9.4.1 Materials
39 - 9.4.2 Manufacturing Process
40 - 9.4.3 Provision of fitting, partitions and their assembly
40 - 9.5 Testing
40 - 9.5.1 Type testing
41 - 9.5.2 Routine quality control testing
42 - 10 PLASTIC (POLYOLEFIN) SEPTIC TANKS
42 - 10.1 Scope
42 - 10.2 Performance requirements
42 - 10.3 Design
42 - 10.3.1 General
43 - 10.3.2 Thickness
43 - 10.3.3 Anchorage
43 - 10.4 Manufacture
43 - 10.4.1 Materials
43 - 10.4.2 Manufacturing process
44 - 10.5 Testing
44 - 10.5.1 Type testing
44 - 10.5.2 Routine quality control testing
46 - APPENDIX A - REFERENCED DOCUMENTS (Normative)
49 - APPENDIX B - SEPTIC TANK CAPACITIES (Informative)
49 - B1 Scope
49 - B2 Application and context of use
49 - B2.1 Application
49 - B2.2 Context of use
49 - B3 Conventional septic tanks
50 - APPENDIX C - TEST OF THE MANUFACTURER'S INSTRUCTIONS FOR THE INSTALLATION OF FITTINGS IN A SOUND AND WATERTIGHT MANNER
50 - C1 Scope
50 - C2 Principle
50 - C3 Testing
50 - C4 Pass/Fail
50 - C5 Test records
51 - APPENDIX D - DETERMINATION OF THE RESISTANCE OF A PARTITION TO A HYDROSTATIC HEAD (PUMPOUT TEST) (Normative)
51 - D1 Scope
51 - D2 Principle
51 - D3 Testing
51 - D4 Pass/Fail
51 - D5 Test records
52 - APPENDIX E - DETERMINATION OF WATERTIGHTNESS (Normative)
52 - E1 Scope
52 - E2 Principle
52 - E3 Apparatus
52 - E4 Testing
52 - E4.1 Procedure
52 - E4.2 Test criteria
52 - E4.3 Frequency
53 - E5 Pass/fail
53 - E6 Repair
53 - E7 Test records
55 - APPENDIX F - DETERMINATION OF RESISTANCE TO LATERAL LOAD - HYDRAULIC TEST METHOD (Normative)
55 - F1 Scope
55 - F2 Principle
55 - F3 Apparatus
55 - F4 Procedure
55 - F5 Assessment
55 - F6 Frequency
56 - F7 Retesting
56 - F8 Test records
57 - APPENDIX G - DETERMINATION OF RESISTANCE TO LATERAL LOAD - POINT LOAD TEST METHOD (Normative)
57 - G1 Scope
57 - G2 Principle
57 - G3 Apparatus
58 - G4 Procedure
58 - G4.1 Testing of tank filled with water
58 - G4.2 Testing of empty septic tank
58 - G5 Assessment
58 - G6 Frequency
58 - G7 Retesting
59 - G8 Test records
60 - APPENDIX H - DETERMINATION OF RESISTANCE TO TOP LOADING (Normative)
60 - H1 Scope
60 - H2 Principle
60 - H3 Apparatus
60 - H4 Procedure
60 - H4.1 General
60 - H4.2 Load application
60 - H5 Assessment
60 - H6 Frequency
60 - H7 Retesting
61 - H8 Test records
63 - APPENDIX I - INSTALLATION OF SEPTIC TANKS (Informative)
63 - I1 Scope
63 - I1.1 Siting of tanks
63 - I1.2 Soil
63 - I1.3 Surface Water
63 - I1.4 Location on Site
63 - I1.5 Drainage
63 - I1.6 Desludging
64 - I2 Installation instructions
64 - I2.1 General
64 - I2.2 Councils
64 - I2.3 Manufacturer
64 - I2.4 Repairs
65 - APPENDIX J - DETERMINATION OF THE HARDNESS OF GLASS FIBRE-REINFORCED PLASTIC COMPOSITES (Normative)
65 - J1 Scope
65 - J2 Principle
65 - J3 Apparatus
65 - J4 Test specimens
65 - J5 Procedure
65 - J6 Frequency
65 - J7 Test records
66 - APPENDIX K - DETERMINATION OF THE IMPACT RESISTANCE OF MOULDED POLYOLEFIN SEPTIC TANKS (Informative)
66 - K1 Scope
66 - K2 Principle
66 - K3 Apparatus
66 - K4 Procedure
66 - K5 Frequency
67 - K6 Test records

Specifies a set of performance criteria for septic tanks which provide a base against which any septic tank, conventional or innovative, may be assessed. It also provides basic specifications covering septic tanks made of various materials. These specifications are to be used by manufacturers and quality assessors for demonstrating compliance of a product with the Standard.

Committee
WS-013
DocumentType
Standard
ISBN
0 7337 1882 5
Pages
60
PublisherName
Standards Australia
Status
Superseded
SupersededBy
Supersedes

This Standard covers the manufacture of conventional septic tanks and their associated fittings for the treatment of domestic wastewater only. This range of tanks typically is designed to cater for:All-waste (Blackwater + Greywater) Blackwater onlyGreywater (with or without kitchen waste included) only and as Holding tanks (collection wells).Septic tanks covered by this Standard are suitable for a flow of domestic wastewater of up to 14,000 litres per week.This flow limit represents an average daily flow of 2000 litres, being from up to 10 persons in a single residence, or an institutional or commercial facility which may have a varying 7 day or 5 day operation averaged out over a full week.ApplicationThis Standard is intended for use by consultants, designers, manufacturers, certifying bodies, installers and regulators.GeneralThis Standard covers only the purpose and requirements of septic tanks and associated fittings. It does not cover the drainage systems leading to the tank, (refer to AS/NZS 3500.2), nor the effluent disposal systems associated with septic tanks, (refer to AS/NZS 1547, (in course of preparation).)Conventional designs and materialsTraditionally certain materials, designs and techniques have been used and have become established. The materials and associated designs shown in Sections 6 to 10 of this Standard have been proven through use and are presented as examples of solutions that are a means of compliance with the provisions of this Standard.Non-standard materials, installations or designsThis Standard does not preclude the manufacture of septic tanks from any material, or in any unusual design, or installation in any non-standard fashion, provided that the completed product and its installation meets the performance requirements and performance criteria given in Section 2 of this Standard.It may be necessary to obtain and supply evidence of third party certification or opinion from people or organisations recognised as having the authority to do so before a regulatory authority will accept a new material or design.Operation and maintenanceSeptic tank systems need maintenance and regular desludging. Operation and maintenance requirements are covered in AS/NZS 1547 (in course of preparation).

First published as AS A178-1968.
Revised and redesignated AS 1546-1973.
Second edition 1976.
Third edition 1983.
Fourth edition 1990.
First published in New Zealand in part as NZCP 44:1961.
Revised and redesignated NZS 4610:1982.
AS 1546-1990 and NZS 4610:1982 jointly revised, amalgamated and redesignated AS/NZS 1546.1:1998.

AS 3600-1994 Concrete structures
AS 1012.9-1999 Methods of testing concrete Determination of the compressive strength of concrete specimens
AS 1304-1991 Welded wire reinforcing fabric for concrete
AS 1478-1992 Chemical admixtures for concrete
AS 1379-1997 Specification and supply of concrete
AS 1546-1990 Small septic tanks
AS 1303-1991 Steel reinforcing wire for concrete
AS/NZS 3500.2.2:1996 National plumbing and drainage Sanitary plumbing and drainage - Acceptable solutions
AS 3972-1997 Portland and blended cements
AS 1302-1991 Steel reinforcing bars for concrete
AS 1597.1-1974 Precast reinforced concrete box culverts Small culverts (not exceeding 1200 mm width and 900 mm depth)
AS 1449-1994 Wrought alloy steels - Stainless and heat-resisting steel plate, sheet and strip
AS 1012.14-1991 Methods of testing concrete Method for securing and testing cores from hardened concrete for compressive strength
AS 2738.2-1984 Copper and copper alloys - Compositions and designations - Wrought products
AS 2758.1-1998 Aggregates and rock for engineering purposes - Concrete aggregates
AS 1012.8-1986 Methods of testing concrete Method for making and curing concrete compression, indirect tensile and flexure test specimens, in the laboratory or in the field

AS 3735-2001 Concrete structures for retaining liquids
AS/NZS 1546.3:2001 On-site domestic wastewater treatment units Aerated wastewater treatment systems
AS/NZS 1547:2000 On-site domestic wastewater management
AS/NZS 3500.2:2003 Plumbing and drainage Sanitary plumbing and drainage
HB 230-2006 Rainwater Tank Design and Installation Handbook
AS/NZS 3500.5:2000 Plumbing and Drainage Domestic installations

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