AS 1547-1994

1 - AS 1547-1994 DISPOSAL SYSTEMS FOR EFFLUENT FROM DOMESTIC PREMISES
4 - PREFACE
5 - CONTENTS
6 - SECTION 1 SCOPE AND GENERAL
6 - 1.1 SCOPE
6 - 1.2 APPLICATION
6 - 1.2.1 General
6 - 1.2.2 New materials and methods
6 - 1.2.3 Unusual installations
6 - 1.3 REFERENCED DOCUMENTS
7 - 1.4 DEFINITIONS
7 - 1.4.1 Absorption
7 - 1.4.2 Absorption trench or area
7 - 1.4.3 Aeration system
7 - 1.4.4 Alternating disposal trench and area
7 - 1.4.5 Design irrigation rate (DIR)
7 - 1.4.6 Durable aggregate
7 - 1.4.7 Effluent
7 - 1.4.8 Evaporation
7 - 1.4.9 Evapotranspiration (ET) area or trench
7 - 1.4.10 Evapotranspiration-absorption (ETA) area or trench
8 - 1.4.11 Geotextile
8 - 1.4.12 Long-term acceptance rate (Quantity symbol: LTAR)
8 - 1.4.13 Pan evaporation
8 - 1.4.14 Permeability (Quantity symbol: P)
8 - 1.4.15 Small septic tank
8 - 1.4.16 Sullage
8 - 1.4.17 Transpiration
8 - 1.4.18 Wetted areas
9 - SECTION 2 TYPES OF DISPOSAL SYSTEMS
9 - 2.1 SCOPE OF SECTION
9 - 2.2 GENERAL
9 - 2.2.1 Configuration
9 - 2.2.2 Distribution of effluent
9 - 2.2.3 Rainwater
9 - 2.3 ABSORPTION TRENCHES OR AREAS
9 - 2.3.1 Application
9 - 2.3.2 Piped trench
10 - 2.3.3 Boxed trench
10 - 2.3.4 Durable self-supporting arch trench
10 - 2.3.5 Alternating disposal trench or area
10 - 2.4 EVAPOTRANSPIRATION AREAS OR TRENCHES
10 - 2.4.1 General
10 - 2.4.2 Construction
12 - 2.5 ABSORPTION WELL
13 - 2.6 PRESSURIZED IRRIGATION SYSTEMS
13 - 2.6.1 General
14 - 2.6.2 Effluent
14 - 2.6.3 Methods of irrigation
14 - 2.6.4 Siting of surface irrigation areas
14 - 2.6.5 Preparation of irrigation area
14 - 2.6.6 Requirements for irrigation systems
16 - SECTION 3 DESIGN OF DISPOSAL SYSTEMS
16 - 3.1 ESTIMATION OF DAILY FLOWS
16 - 3.2 LOCATION
16 - 3.3 PERMEABILITY OF A SOIL
16 - 3.3.1 General
16 - 3.3.2 Determination
17 - 3.4 SITE EVALUATION
18 - 3.5 COMPONENTS
18 - 3.5.1 Absorption.
19 - 3.5.2 Evapotranspiration
19 - 3.6 SIZING OF A DISPOSAL AREA
19 - 3.6.1 Worked examples
19 - 3.6.2 Procedure
23 - SECTION 4 EFFLUENT COLLECTION WELL
23 - 4.1 REQUIREMENTS
23 - 4.2 CAPACITY OF COLLECTION WELL
23 - 4.3 PUMPING SYSTEMS
23 - 4.4 CONSTRUCTION
23 - 4.5 ACCESS OPENINGS
23 - 4.6 ANCHORAGE
23 - SECTION 5 EFFLUENT DISTRIBUTION BOX
23 - 5.1 DISTRIBUTION BOX
23 - 5.2 CONSTRUCTION
24 - SECTION 6 TREATMENT OF SULLAGE
24 - 6.1 GENERAL
24 - 6.2 SULLAGE TREATMENT TANK
25 - APPENDIX A - TEXTURAL CLASSIFICATION OF SOIL
25 - A1 SCOPE
25 - A2 PRINCIPLE
25 - A2.1 Method A
25 - A2.2 Method B
25 - A3 APPARATUS
25 - A4 PROCEDURE
25 - A4.1 Method A
25 - A4.2 Method B
26 - A5 REPORT
29 - APPENDIX B - PERCOLATION TEST
29 - B1 SCOPE
29 - B2 PRINCIPLE
29 - B3 APPARATUS
29 - B4 PROCEDURE
29 - B4.1 Falling head method
31 - B4.2 Constant head method
31 - B5 CALCULATION
31 - B5.1 Falling head method
31 - B5.2 Constant head method
31 - B6 REPORT
32 - B7 GENERAL EQUATIONS
32 - B7.1 Falling head method
32 - B7.2 Constant head method
33 - APPENDIX C - SUITABLE VEGETATION FOR WET SOILS
33 - C1 SCOPE
33 - C2 TYPES OF VEGETATION
34 - APPENDIX D - GUIDELINES FOR DETERMINING QUALITY OF EFFLUENT
34 - D1 SCOPE
34 - D2 PROCEDURE
34 - D3 QUALITY OF EFFLUENT
36 - APPENDIX E - TYPICAL SUB-SURFACE IRRIGATION SYSTEM
36 - E1 SCOPE
36 - E2 REQUIREMENTS
36 - E2.1 Layout
36 - E2.2 Site preparation
36 - E2.3 Planting
36 - E2.4 Sizing
38 - APPENDIX F - DISPERSIVE CLAY SOILS
38 - F1 SCOPE
38 - F2 GENERAL
38 - F3 ASSESSMENT
38 - F4 REPORT
39 - APPENDIX G - EXAMPLES OF THE APPLICATION OF THE PROVISIONS OF THIS STANDARD
39 - G1 SCOPE
39 - G2 EXAMPLE 1: ABSORPTION TRENCH
39 - G2.1 Problem
39 - G2.2 Calculation
40 - G2.3 Solution
40 - G3 EXAMPLE 2: EVAPOTRANSPIRATION ABSORPTION AREA/TRENCH
40 - G3.1 Problem
40 - G3.2 Calculation
42 - G3.3 Solution
42 - G3.4 Comment
42 - G4 EXAMPLE 3: EVAPOTRANSPIRATION AREA
42 - G4.1 Problem
42 - G4.2 Calculation
43 - G4.3 Solution
43 - G4.4 Comment
43 - G5 EXAMPLE 4: IRRIGATION AREA
43 - G5.1 Problem
43 - G5.2 Calculation
44 - G5.3 Solution

Specifies requirements for the disposal systems for effluent from domestic premises comprising not more than five bedrooms, i.e. 10 persons.

This Standard sets out the requirements for the disposal systems for effluent from domestic premises comprising not more than five bedrooms, i.e. 10 persons. The following disposal systems are covered in this Standard:(a) Sub-surface systems Sub-surface systems may include -(i) an absorption trench or area;(ii) an evapotranspiration area or trench;(iii) a combined evapotranspiration-absorption area or trench; or(iv) an absorption well.(b) Surface irrigation Effluent may be disposed of by surface irrigation provided it is of a satisfactory quality (see Clause 2.6.2) and the authorization of the relevant regulatory authority is first obtained.(c) Collection well Effluent may be discharged into a watertight collection well for subsequent removal from the site, with the authorization of the relevant regulatory authority.

Under Revision See DR 96034 First published in part as Int 320-1951.AS CA13 first published 1968.Revised and redesignated AS 1547-1973.Int 320-1951 and AS 1547-1973 revised, amalgamated and designated AS 1547-1994. First published in part as Int 320-1951. AS CA13 first published 1968. Revised and redesignated AS 1547-1973. Int 320-1951 and AS 1547-1973 revised, amalgamated and designated AS 1547-1994.